EPA-600/3-78-001
January 1978
Ecological Research Series
DISTRIBUTION AND IMPORTANCE OF
PHYTOPLANKTON IN THE
ATCHAFALAYA BASIN
Environmental Monitoring and Support Laboratory
Office of Research and Development
U.S. Environmental Protection Agency
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RESEARCH REPORTING SERIES
Research reports of the Office of Research and Development, U.S. Environmental
Protection Agency, have been grouped into nine series. These nine broad categories
were established to facilitate further development and application of environmental
technology. Elimination of traditional grouping was consciously planned to foster
technology transfer and a maximim interface in related fields. The nine sereies are:
1. Environmental Health Effects Research
2. Environmental Protection Technology
3. Ecological Research
4. Environmental Monitoring
5. Socioeconomic Environmental Studies
6. Scientific and Technical Assessment Reports (STAR)
7. Interagency Energy—Environment Research and Development
8. "Special" Reports
9. Miscellaneous Reports
This report has been assigned to the ECOLOGICAL RESEARCH series. This series
describes research on the effects of pollution on humans.plant and animal species, and
materials. Problems are assessed for their long-and short-term influences. Investiga-
tions include formations, transport, and pathway studies to determine the fate of
pollutants and their effects. This work provided the technical basis for setting standards
to minimize undesirable changes in living organisms in the aquatic, terrestrial, and
atmospheric environments.
This document is available to the public through the National Technical Information
Service, Springfield, Virginia 22161
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EPA-600/3-78-001
January 1978
DISTRIBUTION AND IMPORTANCE OF PHYTOPLANKTON
IN THE ATCHAFALAYA BASIN
by
Stephen C. Hern, W. D. Taylor, L. R. Williams,
V. W. Lambou, M. K. Morris*
F. A. Morris* and J. W. Hilgert*
Water and Land Quality Branch
Monitoring Operations Division
Environmental Monitoring and Support Laboratory
Las Vegas, Nevada 89114
*Department of Biological Sciences
The University of Nevada, Las Vegas
Las Vegas, Nevada 89154
U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
ENVIRONMENTAL MONITORING AND SUPPORT LABORATORY
LAS VEGAS, NEVADA 89114
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DISCLAIMER
ii
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FOREWORD
Protection of the environment requires effective regulatory actions
which are based on sound technical and scientific information. This
information must include the quantitative description and linking of
pollutant sources, transport mechanisms, interactions, and resulting
effects on man and his environment. Because of the complexities involved,
assessment of specific pollutants in the environment requires a total systems
approach which transcends the media of air, water, and land. The
Environmental Monitoring and Support Laboratory-Las Vegas contributes to
the formation and enhancement of a sound integrated monitoring data base
through multidisciplinary, multimedia programs designed to:
develop and optimize systems and strategies for monitoring
pollutants and their impact on the environment
Demonstrate new monitoring systems and technologies by
applying them to fulfill special monitoring needs of
the Agency's operating programs
This report presents the species and abundance of phytoplankton in the
Atchafalaya Basin. The Nygaard's Trophic State Index (Nygaard 1949),
Palmer's Organic Pollution Index (Palmer 1969) as well as species diversity
and abundance indices are included. These data can be used to biologically
characterize the Atchafalaya Basin, and to formulate plans to minimize the
environmental impact of hydrological modifications. This report was written
for use by Federal, State and local governmental agencies concerned with
water quality analysis, monitoring and/or regulation. Private industry
and individuals similarly involved with the biological aspects of water
quality in the Atchafalaya Basin will find the document useful. For further
information contact the Water and Land Quality Branch, Monitoring Operations
Division.
George :/B. Morgan
Director
Environmental Monitoring and Support Laboratory
Las Vegas
m
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PREFACE
The Atchafalaya Basin is an area of natural importance which provides
extensive natural resources as well as habitat for rare and endangered
species. However, the Basin must also serve as a floodway for the lower
Mississippi River. To meet the need for flood control, the Army Corps of
Engineers has designed a massive channelization project.
In response to a request by the Governor of Louisiana and a joint
United States Congressional Resolution, the Environmental Protection Agency,
the Army Corps of Engineers, and the Department of Interior are conducting a
water and land quality study in the Atchafalaya River Basin. The study's
objectives are to assess the potential impact of a massive channelization
project proposed by the Corps and to develop alternative land and water
management plans, which will accommodate flood flows and maintain an acceptable
level of environmental quality for the Atchafalaya Basin.
EPA's monitoring study attempts to define general water quality in the
Basin, including the distribution of pesticides, and examines the productivity
and energy export of key habitats and the contribution of these to Basin and
estuarine productivity.
iv
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CONTENTS
Page
Foreword i"ji
Preface . ""Y
Figures and Tables . . . v^
Introduction 1
Conclusions 2
Description of Basin 3
Materials and Methods 12
Site Selection and Sample Collection 12
Station Coding 16
Sample Preparation • • • 1?
Examination 18
Quality Control 18
Water Quality Indices 18
Nygaard's Trophic State Indices 18
Palmer's Organic Pollution Indices 20
Species Diversity and Abundance Indices 20
Results 22
Discussion • 23
General Findings 23
Comparison of Major Areas 23
Phytoplankton Abundance and Occurrence 27
Importance of Phytoplankton Productivity 41
References ...... 44
Appendix ^6
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FIGURES
Number Page
1-6 Major study areas and station locations
in the Atchafalaya Basin 4-9
7 Discharge hydrograph of the Atchafalaya River
at Simmesport, Louisiana, 1963-1971 10
8 Discharge hydrograph of the Atchafalaya River
at Simmesport, Louisiana, 1974-1975 11
TABLES
Number page
1 Stations Samples for Phytoplankton Analysis . . 13
2 Nygaard's Trophic State Indices Adapted from
Hutchinson (1967) 19
3 Algal Genus Pollution Index (Palmer 1969) 19
4 Algal Species Pollution Index (Palmer 1969) 19
5 Data Summary by Major Areas 24
6 Summary of the Number of Species, Occurrences and
Dominant Occurrences Within Major Groupings 28
7 Phytoplankton Species Occurrence and Abundance
Occurrence 29
8 Phytoplankton Genus Occurrence and Dominant
Occurrence 39
9 Comparison of Algal Units Per Milliliter, Nutrients
and Light Penetration in the Atchafalaya Basin
and the 1973 National Eutrophication Survey Lakes ... 43
vi
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INTRODUCTION
The collection and analysis of phytoplankton data were included in the
Atchafalaya River Basin Water and Land Study in an effort to determine
relationships between algae and productivity in key habitat types.
During 1974 and 1975, 120 stations were sampled in the Atchafalaya Basin;
samples from 26 of these were selected for phytoplankton analysis. From
86 samples examined, 287 algal species and varieties were identified and
enumerated. Also the National Eutrophication Survey collected phytoplankton
data for Lake Verret during the spring, summer, and fall of 1974 (Lambou, et a!.,
in preparation).
This report presents the species and abundance of phytoplankton in the
Atchafalaya Basin. The Nygaard's Trophic State Index (Nygaard 1949), Palmer's
Organic Pollution Index (Palmer 1969), as well as species diversity and
abundance indices are included.
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CONCLUSIONS
The following were concluded from this study:
1. Phy topi ankton play a minor role in the overall primary productivity
of the Basin proper due to the high concentration of suspended sedi-
ments in the water.
2. Phytopl ankton production was nearly one order of magnitude greater
in areas studied outside the Basin than within the Basin.
3. The inlet waters had significantly lower phytoplankton production
than the rest of the Basin proper.
4. There are at least 107 genera and 287 species of algae present
in the Basin based on 86 samples.
5. Diatoms, particularly centric diatoms, constituted the most abundant
algal group in the study.
6. The five genera which contributed dominant constituents, in order of
e Melos1ra' CryPtomonas- Oscillatoria. Skeletonema.
7. Diatoms and flagellates were the dominant algal groups within the
Basin proper.
8. Flagellates and blue-green algae were the dominant algal groups
cantlfto th0^' Wlth d1atoms also contributing signifi-
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DESCRIPTION OF BASIN
bays being about 0.6 to 2.5 m.
water enters the Basin from two major sources. Approximately 30 percent
lanuarv and crests in the period between April and early June. The flows
phytoplankton samples were collected (19
In the upper one-third of the Basin, the channel-levee complex consists
of a sinall well-defined trunk channel bounded by levee ridges. Stage flue
and the inner levees associated with the main channel.
-
'
S
^h n the%as1n! ^iJth^ugh two outlets, the lower
outlet at Morgan City and the Wax Lake outlet.
ve swamps and freshwater-to-saline marshes characterize the
complex below Morgan City. The marshes and swamps have an intn
ate tldl-draK network dependent upon local runoff and tidal condi t! ons
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FOR
Figures 1 - 6. Major study areas and station
locations in the Atchafalaya Basin.
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C71
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^ /
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00
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MONTHLY AVERAGE 1963-1971 (since
completion of Old River structure)
400 i—
300
to
IL
0
CO
200
teas
100
Annual /
Average x
J F M A
High Water
Low Water
SlS^ the Atchafalaya River
Source: GagHano and van Beek (1975).
12
6
4799
3
to
»
6
o
M J J A S 0 N 0
MONTH
at
10
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800
JFMAMJ JASONDJFMAMJJASOND
Figure 8. Discharge hydrograph of the Atchafalaya River at Simmesport, Louisiana, 1974-1975.
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MATERIALS AND METHODS
SITE SELECTION AND SAMPLE COLLECTION
Stations within seven major areas (inlet, outlet, Buffalo Cove, Fordoche,
Pat Bay, Lake Verret, and a fresh-water marsh site) were chosen for phyto-
plankton analysis (Figures 1-6). These areas were selected to compare various
flooding regimes and habitat types in the Atchafalaya Basin and included
stations in the inlets and outlets of the Basin.
Table 1 lists the major areas and gives the station numbers within each
area, accompanied by a station description, water depth and velocity, and the
type of phytoplankton sample taken for each station. Phytoplankton samples
were only taken at the surface in fast, well-mixed water, while in slow or
still water, the phytoplankton samples represented integrated samples from the
compensation point to the surface. However, if the 1 percent light extinction
point was not reached because of insufficient depth, the sample was composited
from just off the bottom to the surface.
For this study, four stations were sampled to represent the inlet waters
JFigures 2 and 3). All of these stations are in fast, well-mixed waters
{.'able 1). Stations are located in the Old River spillway and the Red River.
These waters combine and enter the Atchafalaya Floodway via the main channel
of t™: Atchafalaya River at Simmesport. The combined flow is confined within
artificial levees for the first 84 km. Two stations are located in this
reach, one at Simmesport and the other at Krotz Springs
nnnHy°U ^Jj^J f,^a c°vers approximately 220 km2 of the Atchafalaya
Floodway south of U.S. Highway 190 (Figures 3 and 4). Rigid boundaries
delineate the area as a hydrologic unit. East and west boundaries are formed n
°I ^ Atchafalaya Wver and the Floodway US Highway 190
^s form the northern boundary, while a natural levee
t0 ^e S°Uth' A natural n'v*r leve* extends along the
?e Western s1de is a depression which is
hardwoods> whil* the southern one-third con-
oonqoheFQrd Atchafa^a Riv^ water contribute to the annual
water flooding reaimf Atr^f ,The I °0ding of the area 1s a modified back-
enters across the J^h^ h 9laya RlVer Water' durin9 ^^ water months,
Levee blrrSw nl? S?Sr ri^^ ^"^ the West Atchafalaya Basin Protec
rn) The water th!n 5 10n I™ the river into Bayou Butte La Rose
in iccSrta * Hde-S°n ^ &nd n°rthern
chosen to represent the Fordoche area "("SblS 1 ?" ag6S' ^ ^"^
12
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TABLE 1. STATIONS SAMPLED FOR PHYTOPLANKTON ANALYSIS
Area
Inlet
Fordoche
Buffalo
Cove
East side
of Basin
Station
Number
A001000
A002000
BOO! 000
B002000
E001000
E004000
E008000
E009000
EOT 1000
E027000
E028000
E030000
E031000
E032000
E052000
Station
Description
Old River Control
Spillway
Red River
Atchafalaya River
at Simmesport
Atchafalaya River
at Krotz Springs
Bayou Courtableau
Lake Fordoche
Henderson Lake
Lake Bigeux
Butte La Rose
Bayou Gravenburg
Northern end
Bayou Gravenburg
Southern end
Buffalo Cove Lake
Southeastern end
Buffalo Cove Lake
Center
Buffalo Cove Lake
Northern end
Unnamed Bayou
Northeast of
Duck Lake
Maximum
Depth (m)
39.6
21.3
16.8
18.3
3.4
3.7
3.4
6.1
4.6
4.3
1.8
2.4
2.7
3.1
2.4
Vel oci ty*
Fast
Fast
Fast
Fast
Still or slow
Still
Still
Sti 1 1
Slow or fast
Still or slow
Still or slow
Still or slow
Still or slow
Still or slow
Still to slow
Sample
Type
Surface
Surface
Surface
Surface
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
*Velocity: still
per minute, fast
no detectable water movement, slow - less than one meter
greater than one meter per minute.
13
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TABLE 1. STATIONS SAMPLED FOR PHYTOPLANKTON ANALYSIS (Continued)
Area
Outlets:
Morgan
City
Wax
Lake
— ••••• - . — —
Marsh
below
Morgan
City
———————
Pat Bay
Lake
Verret**
— _ _
*Velocitv
Station
Number
E059000
E064000
E065000
— ,
E060000
E062000
-
H008000
H013000
— — — ._
6001000
G002000
G003000
G004000
.
221601
221602
221603
221604
••
Station Maximum
Description Depth (m)
• - ,
Flat Lake
Stouts Pass
Berwick Bay
— .
• ' * • i i — .
Wax Lake Outlet
Six Mile Lake
— —
" "- .1 —
Bayou Penchant
Lake Penchant
.
Pat Bay
Northern end
Pat Bay Central
Pat Bay Southcentral
Pat Bay Southern end
_
Lake Verret
Northern end
Lake Verret
Northern end
Lake Verret Central
Lake Verret
Southern end
— — — _
n/% /•! s\ 4- j-v A 4. ~ L i _ _ _ .
11.3
10.7
18.3
— — _ _ _ _
18.3
19.8
' - ' ,™,
2.7
1.5
— ' • .1—
1.8
1.8
2.4
2.1
— * • -.— .
1.8
1.8
3.1
1.8
•
Velocity*
Slow to fast
Fast
Fast
— . — .
Fast
Fast
—
Still
Still
— —
Still
Still
Still
Still
. — — — _
Still
Still
Still
Still
~~ — — ,
Sample
Type
Integrated
Surface
Surface
Surface
Surface
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
Integrated
than one
composited
14
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The Buffalo Cove area, comprising some 230 km2, is located 50 km south of
the Fordoche area (Figures 1, 4, and 5). The area is bounded by natural
levees and spoil-elevated natural levees. The northern one-third has been
largely filled in by sediment. The rest of the area is composed of swamps
with a few permanent water bodies (e.g., Buffalo Cove Lake, Bayou Gravenburg,
Jackass Bay, and arms of Grand Lake).
Annual flooding of Buffalo Cove Basin is normally dependent upon three
openings. These are the entrance channel to Buffalo Cove Lake, the Sibon
Canal, and Bayou Eugene, and are labeled with arrows and designated 1, 2, and
3 respectively on Figure 5. Dewatering occurs to some extent through Sibon
Canal and the entrance channel to Buffalo Cove Lake, but mainly through a
channel in the southeastern portion of Buffalo Cove Lake (labeled by arrow
Number 4 on Figure 5) which connects to Mud Lake. The connections to Buffalo
Cove Lake and Mud Lake always function, while the Sibon Canal and Bayou
Eugene flows only function during periods of medium to high river stage.
The overall flooding regime of the Buffalo Cove Basin can be described as
flowthrough to semi-backwater flooding, dependent on Basin and river stage.
During high water periods, water enters through Bayou Eugene and flowthrough
is maintained from north to south in the deep swamps of the western portion of
the Buffalo Cove area. During lower stages the flow of Bayou Eugene is
eliminated, flowthrough is only maintained south of the Sibon Canal. With
further reductions in stage, both Bayou Eugene and Sibon Canal cease to
function and the area north of Buffalo Cove Lake is then considered a backwater
regime. The source of water to Buffalo Cove Lake is through the entrance
channel while the lake is dewatered through the channel to Mud Lake. During
extreme low water periods, no flow can be perceived. Five stations were
chosen to represent the Buffalo Cove area (Table 1).
Station E052000 lies near Duck Lake in the southeastern portion of the
Atchafalaya Basin, northwest of Morgan City, Louisiana (Figure 5). At high
river stages a moderate current of muddy water flows southward through Duck
Lake and exits at the southeast portion of the lake, eventually draining into
Six Mile Lake. The station is not in any of the major study areas but is
representative of the southeastern portion of the Basin (Table 1).
Dewatering of the entire Atchafalaya Basin occurs through two major
outlets. South of the Buffalo Cove area, the flow diverges into numerous
channels, swamps, bayous, and sloughs until it exits the Floodway either at
Wax Lake outlet or the lower Atchafalaya River at Morgan City. The water at
either outlet is constricted as the river regains its identity. Approximately
30 percent of the flow leaves the Basin proper at the Wax Lake outlet while
70 percent is discharged through the Morgan City outlet. At either outlet the
water is fast and well-mixed (Table 1). Two sites are located at the Wax Lake
outlet while three sites are located in the outlet waters of the lower Atcha-
falaya River (Figure 6).
15
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Three areas of study were located outside the Atchafalaya Basin proper
for comparison analysis. They are a fresh-water marsh area located south of
Morgan City, and Pat Bay and Lake Verret located to the east of the Atchafalaya
Basin.
Two stations (H-8, H-13) are located in the fresh-water marsh environment
(Figure 1). This area mainly receives water from local runoff from east of
the Basin, The two stations representing this area are located in Bayou
Penchant and Lake Penchant (Table 1).
Hydrologically, Pat Bay and Lake Verret are part of the Verret Basin
contained between the east Atchafalaya Basin Protection Levee and the natural
levees of the Mississippi River, Bayou Lafourche and Bayou Black (Figure 1).
Both are entirely dependent upon local runoff consisting partially of agricul-
tural drainage.
Lake Verret at an estimated elevation of 0.9 m has a surface area of
57 km and an average depth of 1.5 m (Figure 5). The shoreline development is
minimal; only a few camps are located on the south and west shores. However,
there are extensive oil and gas fields on the east side of the lake, and
several wells in the lake proper.
At an estimated elevation of 1.5 m Pat Bay has a surface area of 1.5 km2
and an estimated average depth of 1.2 m (Figure 4). Only minimal shoreline
and
STATION CODING
leUerosTORETeHSeS^d ^"^ water 1»»£ data The first
letter of a 5TORET number identifies a geographic area of the Basin as follows:
A. North of U.S. Highway 1 and Siimesport, Louisiana.
C. Areas not considered in this report.
D. Areas not considered in this report.
on the south
F. Areas not considered in this report.
' ?S!!nded by the East and
19° °n the n°rth and U'S'
Protection
90
G* n1! au^E 6aSL0f ?e East p™tection Levee and north of
U.S. Highway 90 and south of U.S. Highway 190.
16
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H. All areas of the Basin south of U.S. Highway 90.
The next three digits designate the primary station number within a given
geographic area. The final three digits are used to establish substations of
the primary station. Substations are located geographically near already
established primary stations. No substation numbers were utilized for this
report.
Lake Verret (part of the National Eutrophication Survey) was assigned a
four-digit STORET number (2216). The first two digits of the STORET number
identify the state of Louisiana; the last two digits identify the lake.
In Figures 1 through 6 abbreviated station numbers were utilized because
of space requirements, e.g. A-01 instead of A001000, etc.
SAMPLE PREPARATION
Four milliliters (ml) of Acid-Lugo!'s solution (Prescott 1970) were added
to each 130-ml sample from each site at the time of collection for preservation.
The samples were shipped to the Environmental Monitoring and Support Laboratory,
Las Vegas, Nevada, where equal volumes from each site were mixed to form two
130-ml composite samples for Lake Verret. One composite sample was put into
storage and the other was used for the examination. Samples from the other
stations in the Basin were not composited and no backup samples are available.
Prior to examination, the samples were concentrated by the settling
method. Solids were allowed to settle for at least 24 hours prior to siphon-
ing off the supernate. The volume of the removed supernate and the volume of
the remaining concentrate were measured and concentrations determined. A
small (8 ml) library subsample of the concentrate was then taken. The remain-
ing concentrate was gently agitated to resuspend the plankton and poured into
a capped, graduated test tube. If a preliminary examination of a sample
indicated the need for a more concentrated sample, the contents of the test
tube were further concentrated by repeating the settling method. Final con-
centrations varied from 15 to 40 times the original.
Permanent slides were prepared from concentrated samples after analysis
was complete. A drop of superconcentrate from the bottom of the test tube was
placed in a ring of clear Karo Corn Syrup with phenol (a few crystals of
phenol were added to each 100 ml of syrup) on a glass slide, thoroughly
mixed, and topped with a coverglass. After the syrup at the edges of the
coverglass had hardened, the excess was scraped away and the mount was sealed
with clear fingernail polish. Permanent diatom slides were prepared by
drying sample material on a coverglass, heating in a muffle furnace at 400° C
for 45 minutes, and mounting in Hyrax. Finally, the mounts were sealed with
clear fingernail polish.
Library samples, permanent sample slides and Hyrax-mounted diatom slides
are being stored and maintained at the U.S. EPA's Environmental Monitoring and
Support Laboratory, Las Vegas.
17
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EXAMINATION
The phytoplankton samples were examined with the aid of binocular com-
pound microscopes. A preliminary examination was performed to precisely
identify and list all forms encountered. The length of this examination
varied depending on the complexity of the sample. An attempt was made to find
and identify all of the forms present in each sample. Often forms were
observed which could not be identified to species or to genus. Abbreviated
descriptions were used to keep a record of these forms (e.g., lunate cell
±^:ry,^lamT!L!!!!:cul?/i.i.^c:)' ^^ s^^rVeS^ng a
was essential to accurately
was used.
were enumerated using
5* waCOniPled'
QUALITY CONTROL
^
analyz1n9 a
reft. on Jhe Survey samples by
quality control checks wei* manl nn 7? Montana at the rate of 5 percent.
species Identifications wMlP^L^ perce",t °f these samPles to verify
the samples to verify genuJcoSnU T""6 ^ °n the ^"Blnlng 25 percent of
control checks fo"spe ?es iSert IficaElSfi1)!' the a9reeme"t between quality
i^ies laentincations and genus enumerations is satisfactory.
WATER QUALITY INDICES
1nd1ces
known and widely used, the results shnniHh ?ol?Puter- Although most are well
indices were applied to each sample witlonJ%lnte^reted carefully because the
area or nature of pollutant impact? 9*rd to season> geographical
Nygaard's Trophic State Indices
Five indices devised bv NvaaarH C\QAQ\
that certain algal groups are indicat IP nf iT* 1pr°E°sed under the assumption
These indices were calculated in order ?o lil -^ °f nutn'ent enrichment.
station or lakes' trophic status As » °e™ }n d?termir>ing the surveyed
Phyta, centric diatoms, and members of thfrh? rule> ^Phyta, Eugleno-
that are eutrophic (rich in nutrients) wM?hl°roc?"ales are found in waters
generally cannot tolerate high nutrient• u!l? 6STds and man^ P^ate diatoms
trophic waters (poor in nutrients) els and so are found in oligo-
18
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TABLE 2. NYGAARD'S TROPHIC STATE INDICES ADAPTED FROM HUTCHINSON (1967)
Index
Calculation
OligOtophTcEutrophic
Myxophycean
Chlorophycean
Diatom
Euglenophyte
Compound
Myxophyceae
Desmideae
Chlorococcales
Desmideae
Centric Diatoms
Pennate Diatoms
Euglenophyta
ippnyi
+ Chi
Myxophyceae + Chlorococcales
Myxophyceae + Chlorococcales +
Centric Diatoms.+ Euglenophyta
Desmideae
0.0-0.4
0.0-0.7
0.0-0.3
0.0-0.2
0.0-1.0
0.1-3.0
0.2-9.0
0.0-1.75
0.0-1.0
1.2-25
TABLE 3. ALGAL GENUS POLLUTION INDEX
(Palmer 1969)
TABLE 4. ALGAL SPECIES POLLUTION
INDEX (Palmer 1969)
Genus
Anacystis
Anksitvodesmus
Ch lamydomonas
Chlovella
Clostevium
Cyalotella
Euglena
Comphonema
LepOQinalis
Meloaira
Mi or actinium
Naviaula
Nitzsehia
Oscillatoria
Pandorina
Phacus
Phormidium
Scenedesmus
Stigeooloni-im
Synedra
Pollution
Index
1
2
4
3
1
1
5
1
1
1
1
3
3
5
1
2
1
4
2
2
Species
Pollution
Index
Arikistvodesmus falcatus 3
Avthposp-iva jennein- 2
Chlovetla. vulgaris 2
Chyclotella meneghiniana 2
Euglena gvaaiTis 1
Euglena viridis 6
Gomphonema parvulum 1
Melos-iva vavians 2
Navioula aryptoeephala ]
Nitzohia aciculcwis 1
Nitzchia palea 5
Oseillatoria ahlorina 2
Osoillatoria limosa 4
Osaillatovia princeps 1
Osaillatoria putvida \
Osoillato^ia tenuis 4
Pandorina morum 3
Saenedeemus quadviaauda 4
Stigeoalonium tenue 3
Synedra ulna 3_
19
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In applying the indices to the Survey data, the number of taxa in
rss: ^r.Mi.r' ° T
appropriate symbol (E) eutroohir and m ?•* fe Presented ™ Table 2. The
lated value. A question mark (1} IS ( °! olJ9°tr°Ph1c, follows each calcu-
within the rangeTf botK cUssi f lemons ^ When the calculated value was
Palmer's Organic Pollution Indices
Two lists of organic pollution-tolerant fn™? Wlth hlgh Or9anic pollution.
20 genera, the other, 20 species T,M S V^e PrePared, one containing
pollution index number ranaina frnm ? I ^ '' Each form was assigned a
extremely tolerant forms Palmer haLn L™-6?1^ tole™nt forms to 6 for
records and/or where emphasizedbv thp a,,Ih * numbers ™ occurrence
organic pollution. pldblzea W the authors as being especially tolerant of
index numbers of the algae present arl JntTS are recorded. The pollution
species score. Palmer deteKd tha? , ' providing a genus score and a
can be taken as evidence ofTlSh orSJnl? n%?Jf 2° or TOre for either index
is taken as probable evidence of hlah irnE lutl??» while a score of 15 to 9
gest that the organic pollution of tL If^ Poll"tion. Lower figures sug-
not representative, or that some sub^nr Ple I" not hi9h> that the sample is
persistence is present and active 6 °r factor interfering with algal
Species Diversity and Abundance Indices
sgspisss^-^ s»«.-,..
s
H = :^pi log
x
20
-------
where P is the proportion of the ith taxon in the sample, which is
calculated from n./N; n. is the number of individuals per ml of the ith
taxon, N is the total number of individuals per ml, and S is the total
number of taxa. However, Basharin (1959) and Pielou (1966) have pointed out
that H calculated from the subsample is a biased estimator of the sample H,
and if this bias is to be accounted for, we must know the total number of
taxa present in the sample since the magnitude of this bias depends on it.
Pielou (1966) suggests that if the number of taxa in the subsample falls only
slightly short of the number in the larger sample, no appreciable error will
result in considering S, estimated from the subsample, as being equal to the
sample value. Even though considerable effort was made to find and identify
all taxa, the samples undoubtedly contain a fair number of rare phytoplankton
taxa which were not encountered.
In the Shannon-Wiener formula, an increase in the number of taxa and/or
an increase in the evenness of the distribution of individuals among taxa
will increase the average diversity per individual from its minimal value of
zero. Sager and Hasler (1969) found that the richness of taxa was of minor
importance in determination of average diversity per individual for phytoplankton
and they concluded that phytoplankton taxa in excess of the 10 to 15 most
abundant ones have little effect on H, which was verified by our own calculations,
Our counts are in number per ml and since logarithms to the base 2 were used
in our calculations, H is expressed in units of bits per individual. When
individuals of a taxon were so rare that they were not counted, a value of
1/130 per ml or 0.008 per ml was used in the calculations since at least one
individual of the taxon must have been present in the collection.
The Lake Verrette (National Eutrophication Survey) samples represent a
composite of all phytoplankton collected at the four different sampling
stations on the lake; however, samples from the other stations were not
composited. The number of samples, M, making up a composite is given in the
appendix. The maximum diversity, MaxH, (i.e., when the individuals are
distributed among the taxa as evenly as possible) was estimated from logaS;
the total diversity, D, was calculated from HN, and the evenness component of
diversity, J, was estimated from H/MaxH (Pielou 1966). Also given in the
appendix are L, the mean number of individuals per taxa per ml, and K, the
number of individuals per ml of the most abundant taxon in the sample.
Zand (1976) suggests that diversity indices be expressed in units of
"sits", i.e., in logarithms to base S (where S is the total number of taxa in
the sample) instead of in "bits," i.e., in logarithms to base 2. Zand points
out that the diversity index in sits per individual is a normalized number
ranging from 1 for the most evenly distributed samples, to 0 for the least
evenly distributed samples. Also, it can compare different samples, independ-
ent of the number of taxa in each. The diversity in bits per individual
should not be used in direct comparisons involving various samples which have
different numbers of species. Since MaxH equals log S, the expression in
sits is equal to logs S, or 1. Therefore diversity in sits per individual is
numerically equivalent to J, the evenness component of the Shannon-Weaver
diversity relationship.
21
-------
RESULTS
at the end of the Appendix An ainSSE* [ tak? Verret whicn ^ included
each station and Lake Verret qives^hp ° ph*toPlankt°n species list for
by sampling date. Where a station was ^mniaH10115 °f individual species
summary continues on a second soeripc i5cl -S " more than 3 dates the data
trations are in cells, colonies or fl iSnl^Irrn^rJ0 the first' Concen-
after a species name indicates the p£ ence of(thEU ^ FIL) per ml • An "X"
such a low concentration that it did nnf *t th^ sPecies on that date in
indicates that the organism was noTfnuL • \!!P ln the count- A blank space
date. Column S is used to dcslanatP ?h«V" • ?ample collected on that
five dominant taxa in a sample based .mn^T^ s subJ'ective opinion of the
K^
22
-------
DISCUSSION
GENERAL FINDINGS
In this study 107 genera and 287 species of algae were identified in
86 samples. It is appropriate to compare these results to Bryan et al. (1975),
who studied the phytoplankton of the Atchafalaya Basin.
The two generic lists were comparable with 51 genera in common. There
were, however, numerous genera unique to each study, e.g., 21 in Bryan's and
56 in ours. These genera were usually rare, occurring in less than 20 percent
of the samples. However, there were several interesting exceptions. Asteri-
onella, Skeletonema. Dactylococcopsis, Chroomonas, and Cryptomonas were missing
from Bryan's list but were common in occurrence and/or dominant occurrence in
our list (dominance was defined as the occurrence of a genus or species which
was greater than or equal to 10 percent of the total numerical concentration of
a sample).
Bryan et al. (1975) reported the presence of Hyalbtheca in approximately
50 percent of the samples they examined, while the genus was totally absent from
our samples. Some species of Hyalotheca can be confused with forms of Melbsira
distans which were common in our samples.
COMPARISON OF MAJOR AREAS
The phytoplankton data were summarized by area and are presented in Table 5.
The values given are means, for each category, of all station-date combinations
within each area. The table provides area trends for major algal groupings,
e.g., diatoms, flagellates, Cyanophyta, Chlorococcales, and others. Similar
summaries are given for several indices including total cell concentrations,
Shannon-Wiener diversity index (H), evenness component of diversity (J), Palmer's
Organic Pollution Index for genus, Nygaard's Compound Index for trophic state,
and the mean number of taxa found at each station-date combination. This table
provides a format for direct comparison of area trends and illustrates major
differences between areas.
Diatoms represented the largest component of the major groupings in the
Basin proper, which is in agreement with Bryan et al. (1975). The major groupings
listed in decreasing order are: diatoms (49%), flagellates (26%), Cyanophyta
(13%), Chlorococcales (8%) and others (3%). Outside the Basin proper, blue-
greens and flagellates formed the largest components. The composition was:
Cyanophyta (34%), flagellates (28%), diatoms (26%), Chlorococcales (10%), and
others (2%).
Average total cell concentrations varied significantly between the two
areas as well. The Basin had lower concentrations, 1,200 algal units/ml, while
the outside average was 42,000 algal units/ml.
23
-------
TABLE 5. DATA SUMMARY BY MAJOR AREAS
Area
Basin Proper:
Inlet
Outlet
Fordbche
Buffalo Cove
East-Side
Outside:
Lake Verret
Pat Bay
Penchant
Basin Proper
Outside
Station
Data % Composition* Indices*
V
c
«*- c
O -i-
-4-
=*= rc
•«J
c/
4
5
5
5
1
1
4
2
0
7
1 O)
) (O 4->
: +-> «/> TJ .c
i £
> «t- c c
o o c
•r-
=«= 4->
14
12
19
15
3
3
12
8
63
23
CO
E
* 2
(O
•1-
o
76
48
30
51
40
18
28
31
49
26
i
I— IO
C71-M
IT! rtJ
t— r—
u.
13
29
40
24
25
9
56
20
26
28
as
4->
>>
^:
Q.
o
cr
to
>>
o
4
14
12
10
27
62
4
36
13
34
i (/>
o a>
S- i—
o ta
i— O
.c o
0 0
o
4
8
8
14
8
11
9
10
8
10
w>
%-
ai
j=
+j
0
3
1
10
1
-
-
3
3
3
2
•4->
r— C
i — 3
(U O
C_> C_3
780**
1,000
1,500
1,800
750
90,000
8,000
28,000
1,200
42,000
M- fO
0 X
03
=tt=l—
19
23
22
23
25
44
34
48
22
42
to
- to x
s. r» cu
a; c: -a
E OJ C
r- CD »-l
03
a.
2.2
7.2
5.7
5.7
4.3
21.0
9.1
16.0
5.0
15.4
X
co a>
- -a
T3 C
i- l-H
fO
10 '
CT1T3
>, a.
z E
o
11
11
14
14
12
32
20
18
12
23
H
1.90
2.78
2.58
2.69
2.24
2.43
2.50
3.21
2.44
2.71
J
0.45
0.63
0.60
0.59
0.48
0.48
0.49
0.60
0.55
0.52
ro
*Values are means of all station-date combinations within each area.
**The cell count from station A00200 on December 18, 1975 was deleted from the computation due to its
extremely high value.
-------
These data, composition and concentration, were indicative of higher
primary productivity outside the Atchafalaya Basin than within. This conclusion
was further supported by the indices addressed in Table 5, especially Palmer's,
Nygaard's, and the number of taxa, where values outside the Basin were two or
more times those of the Basin proper.
The evenness component of diversity (J) and the diversity index (H) demon-
strated a similar trend in diversity among the major study areas of the Basin
(Table 5). Evenness component analyses divided the areas into three groups:
inlet (J = 0.45), East Side, Lake Verret, and Pat Bay (J = 0.48-0.49), and the
Fordoche, Buffalo Cove, Penchant, and outlet (J = 0.59-0.63). Diversity (H)
formed the same groupings but the separation between the second and third was
not as obvious. Both indices showed the inlet waters to be the least diverse.
The following comparisons and analyses of specific areas within and outside
the Basin proper describe and illustrate the complexity of the Atchafalaya
system. The inlet stations were the least productive areas examined, as reflected
by low mean total concentrations (780 algal units/ml), as well as the lowest
mean diversity (H = 1.90). These values reflected the high sediment load of the
inlet waters which had been confined within well-defined channels over long
distances. The inlet waters also had the lowest average number of Palmer's
genus indicator units and for Nygaard's compound trophic state index, and the
lowest mean number of taxa per station-date.
Diatoms dominated the flora of the inlet waters, averaging 76 percent of
the numerical totals. Flagellates constituted the only subdominant group of any
significance although they were the dominating group in two samples, both
collected during highwater in April. The overwhelming diatom dominance was
associated with relatively low total cell concentrations and algal productivity.
The one exception to the general trend of inlet waters was a bloom of
Cyclotella meneghiniana recorded at station A002000 in the Red River on
December 18, 1975. C_. meneghiniana accounted for 95 percent of the total
population and was at a concentration of 35,000 cells/ml.
It is interesting to compare and contrast conditions at the Basin inlet to
those of the outlet stations. The algal community of the outlet resembles the
inlet more than any other habitat type studied. Most of the water reaching the
outlet passes straight through the system with some additions from water moving
through swamp areas. The quantity of suspended material at the outlet is
similar to that in the inlet.
The mean cell concentration at the outlet was only slightly higher than
that of the inlet, although the diversity increased considerably
(2.78 vs. 1.90). The other indices were higher at the outlet also, especially
Palmer's, with more than three times the number of indicator units than occurred
at the inlet.
25
-------
iance°was ?Utl6t WdterS Were alS° dom1nated b^ diatoms, the
^^"JX^JLP!™!1?* and 12 Percent respectiveh^The
in
at1ons are
in theln^ waierT 'pMSkE product;vi^ a^ higher in these areas than
are double thai of the lX?et !SS c?nCentrati°ns in Fordoche and B^al° Cove
genus Indicate s NyglarS's com ound iXSHndT^V11 diversit^ Pa^'s „
identical for the two habitatsTut alwavfat ^i, G numb?r °f taxa are essentially
inlet. Each of the four maior aiM? SXf U6S 9reater than those of the
Fordoche and Buffalo Cove sample ^thaSTttlTinTJI6,8^1^ rSPresented in
were more important in BufftlS Cove^tRa^they were^in '
had th^saVSll^c^^^^^ n ee'
examined from the east-side sSti™ J«H {* ha5ltats- Only three samples were
for the area was established! 1S n0t Certain that an accurate trend
outsidT2ethTBasin9prohper '^ter'su'nnl^inn3^ Verret' and Penchant are located
not influenced by Eater passina thrm^h £ ***** 3reaS on'9inates locally and is
waters are 510^1^^^ As a consequence the
areas. Therefore, phytoolankton n^H,,^- " load than waters in otner study
and large algal popElatJonrdeJelSp? 10n 1S n0t as Usht-llmlted due to silts
of th»'arels?f^ least productive
The diversities of Lake Verret and Pat R«i , ' 0/l?1 ,and Lake Verret 90»000/m1)'
be the most diverse of all hablX?s Th^oSS *i^*r Wh11e Penchant proved ?
to an habitat values within the Basin Srope? S^^h^J qUi'te high C°mpa!:ed
index within the Basin proper was 7 2 whilPm.J^ 1Qh?St value for the Palmf
were calculated. Likewise within thp R«- outside, values of 9.1, 16, and 21
value was 14 while oulsl devalues were 8 21PrJSdVheTl!-1flhest Nygaard C°mp°Und
per station-date followed the same trend P n Sc * The mean nmb*r ^ taxa
within thb Basin proper wh^ ou^ide'valuel'were
Ine greatest differsncp^ nnt'ori ui-i+h-iM 4-u~ J.L.
position. Lake Verret was Dominated bv MM! three a^s were in algal corn-
types (Oscillatoria and Lynqbva) Diatnmc M^oc11 5a?' esPecially filamentous
flagellates and Chlorococlales contr butPd ^ ^C°? iin 1mP°rtance while
flora. Pat Bay, on the other hand had ll Sy b°Ut 10 Percent each to the
dominated by flagellates, wHh d?atoms formin^r9^" algae but rather was
Penchant had £he most evenly distribuLd rnmnL-,-tr°n? ^bdominant group.
and flagellates sharing tRe dom nant posiS " WUh diat°ms' "ue-greens.
26
-------
PHYTOPLANKTON ABUNDANCE AND OCCURRENCE
A summary of the phytoplankton species and occurrence by major groups is
provided in Table 6. The table was compiled from data given in Table 7 and in
the Appendix. Table 7 is a computer generated alphabetic species list of the
phytoplankton identified in this study. The species list does not include
non-specific types as found in the Appendix.
Table 6 gives the number of species, the total number of occurrences and
the number of dominant occurrences by major group e.g., Cyanophyta, Pyrro-
phyta, Euglenophyta, etc. The table considers all samples collected for this
study irrespective of geographic location.
Chlorococcales and diatoms had the greatest numbers of species, 85 and 82
respectively. Euglenophyta was third with 47 species and Cyanophyta fourth
with 27 species. These four groups accounted for 84 percent of all species
identifed. The overriding importance of the diatoms is illustrated by examining
dominant species occurrence; of the 450 occurrences of diatoms,
119 reached dominance.
The diatoms can be subdivided into two groups, pennate diatom species
(64) and centric diatom species (18). Although there are more than 3% times
as many species of pennate diatoms as Gentries, the pennates accounted for
only 36 percent of the total diatom occurrences. The importance of the
relatively few species of centric diatoms is further illustrated by the fact
that they were represented as dominants 93 times.
27
-------
TABLE 6. SUMMARY OF THE NUMBER OF SPECIES, OCCURRENCES AND
DOMINANT OCCURRENCES WITHIN MAJOR GROUPINGS
Cyanophyta
Pyrrophyta
Euglenophyta
Chlorococcales
Pennate Diatoms
Centric Diatoms
Green
Flagellates
Chrysophytan
Flagellates
Cryptophyceace
Others
Number of
Species
27
10
47
85
64
18
13
10
6
7
Total Number of
Occurrences
112
39
139
379
163
287
44
14
75
10
Number of Dominant
Occurrences
23
0
9
20
26
93
6
4
45
0
28
-------
TABLE 7. PHYTOPLANKTON SPECIES OCCURRENCE AND ABUNDANCE
Species
Aohnanthes lanoeolata V. dubia
Aohnanthes miorocephdla
Aotinastnm hantzsahii
Actinastrwn hantzsohii V. fluviatile
Anabaena planotoniaa
Anabaenopsis oivcularis
Anabaenopsis elenkinii
Anabaenopsis philippinensis
Anabaenopsis raoiborskii
Ankistrodesmus convolutus ?
Ankistvodesmus faloatus
Ankistrodesmus falcatus v. mirabilis
Aphanizomenon flos-aquae
Aphanizomenon gvaoile ?
Aphanoaapsa deliaatissima ?
Aphanoaapsa elaohista
Aphanotheoe nidulans
Asterionella formosa
Asterionella formosa v. graaillima
Campy lodisous eoheneis
Carterta oovdifovmis
Ceratium hivundinella f. braohyoeras
Cevatiwn hirundinella f. furcoides
Chaetoceros elmovei
Chilomonas paramaeciian
Chlantydomonas cierikowskii
Chlamydomonas globosa
Chlorogonium elongation
Chlovogoniwrn minimum
Chvoomonas acuta
Chroomonas nordstedtii
Chrysoooccus ? rufescens
Closteriwn kutzingii
Cooeoneis placentula
Cocaoneis placentula v. euglypta
X*
0
233
34
2
24
590
266
2929
1574
0
480
337
206
570
0
0
*i i—
15
0
0
163
0
0
0
215
651
™T T
77
0
n 1 S*t
312
522
0
63
0
* x = Mean algal units per ml .....,.,
** n = wnmhpr nf nrcurrences (e.g., Achnanthes microcephala
1 sample)
*** * = Pprrpnt occurrence (e.q., Achnanthes
1.2 percent of the samples analyzed)
n**
1
1
1
14
2
4
1
1
3
1
21
26
9
1
*"* A
34
2
1
2
2
1
1
2
1
3
1
i r\
10
occurred
%***
1.2
1.2
1.2
16.3
2.3
4.7
1.2
1.2
31—
.5
1 .2
24.4
30.2
10.5
I/*
.2
IA
.2
In
.2
In
.2
on r*
39.5
2.3
1.2
2.3
2M
.3
1.2
Irt
.2
2.3
1f\
.2
8T
.1
20
.3
10
.c.
1f\
.2
3.5
1.2
Irt
.2
nf»
.6
2 A
.3
in
microcephala occurred in
29
-------
TABLE 7. PHYTOPLANKTON SPECIES OCCURRENCE AND ABUNDANCE (Continued)
Species
CooGoneis placentula V. lineata
Coelastman cambrioitm
Coelastvwn oambviown v. intermedium
Co etas trim micropomm
Coelastrum sphaericwn
Cosoinodiscus denarius
Cosainodiscus laoustvis
Coscinodiscus rothii v. subsalsa
Crucigenia apioulata.
Cruoigenia crucifera
Cruoigenia fenestvata
Crucigenia quadrata
Cruoigenia reotangularis
Cruoigenia tetrapedia
Cryptomonas erosa
Cvyptomonaa mcwssonii
Cvyptomonas reflexa
Cyolotella. bodanioa ?
Cyolotelta glomevata
Cyalotella menenghiniana
Cyelotella michiganiana
Cymatopleura solea
CymbeZIa tuvgida
Cymbella ventviaosa
Daotylocoocopsis irregulavis
Diatoma vulgare
Diatyosphaeviwn efoeribevgian-m
Dictyosphaeriim pulohellwn
Dinobryon bavariaum
Dinobryon cylindvicum
Dinobryon divevgens
Dinobryon sevtularia
Diploneia intervupta ?
Diploneis puella
Diploneis smithii
X*
n
u
i?n
1 OO
20
17
•j/
nn
H*t
20
oo
C.C.
77
/ /
c;^
00
n
\j
68
9^/1
c.'j'r
27*5
6. /
-------
TABLE 7. PHYTOPLANKTON SPECIES OCCURRENCE AND ABUNDANCE (Continued)
Species
Elakatothrix gelatinosa
Epithemia turgida
Euastrum dentiaulatum
Eudorina elegans
Euglena aous ?
Euglena gvaoilis
Euglena oxyuris
Euglena oxyuris V. minor
Euglena subehrenbergii ?
Euglena tvipteris
Eunotia curvata
Eunotia peotinalis V. minor
Fragilaria eonstruens
Fragilaria eonstruens V. subsalina
Fvagilaria crotonensis
Franoeia droescheri
Franceia ovalis
Fvustulia rhomboides
Glenodinium gymnodinium
Glenodinium gymnodinium v. biscutelliforme
Glenodinium ooulatum
Gloeooystis planctonioa
Golenkinia vadiata
Gomphonema aouminatum v. trigonooephala
Gomphonema angustatum
Gomphonema angustatum v. producta
Gomphonema oonstriotum
Gomphonema olivaoeum
Gomphonema pavvulum
Gonium peotorale
Gymnodinium albulum
Gymnodinium ordinatum
Gyrosigma kutzingii
Gyrosigma maerum
Gyrosigma sealproides
X*
29
0
0
6
0
0
0
0
10
0
0
0
0
0
14
28
T rt rt
109
15
0
0
9
m *7
47
73
0
0
n**
6
1
1
1
1
1
1
1
1
I*
1
1
1
2
1f\
0
5
1
n
1
4
%***
7.0
10
.2
20
.3
1.2
10
.2
8T
.1
7n
.0
1O
.2
In
.2
9^
.3
5p
.0
1.2
10
.£.
1f\
.2
50
.8
In
..2
1.2
1.2
1.2
1.2
1f\ f\
2.8
1.2
2*\
.0
1.2
1 O
1 .£
2.3
In
.2
5O
.8
3r»
.5
1 9
1 . C
11 f*
1 .6
5.8
1.2
1 9
1 .C.
4.7
* x = Mean algal units per ml
** n = Number of occurrences
*** % = Percent occurrence
31
-------
TABLE 7. PHYTOPLANKTON SPECIES OCCURRENCE AND ABUNDANCE (Continued)
Species
Hantzschia amphioxys
Kirchneriella lunaris
Lagevheimia subsalsa
Lepocinclis aauta
Lepocinolis fusiformis
Lepooinclis glabva f. minor
Lyngbya circularis
Lyngbya lagerheimii
Lyngbya lirmetioa
Mallomonas akrokomos ?
Mallomonas aipi.no.
Mallomonas oaudata
Mastogloia braunii
Melosira distans
Melosira granulata
Melosira granulata v. angustissima
Melosira granulata v. angustissima f. spiralis
Melosiva islandica
Melosiva italioa
Melosira varians
Mevismopedia glauca
Merismopedia minima
Merismopedia punotata
Mevismopedia tenuissima
Mesostigma vividis
Miaraotiniiffn pusillum
Microcystis aeruginosa
MievooyQ-tis inoevta
Naviaula casoadensis
Navicula oinata
Navicula ouspidata ?
Navioula exigua
Navieula gas trim
Naviaula radiosa
Navicula vulpina
• .
X*
0
0
28
0
0
150
o
5300
5956
51
o
v
0
o
229
272
89
51
198
1 J\J
Af\
-------
TABLE 7. PHYTOPLANKTON SPECIES OCCURRENCE AND ABUNDANCE (Continued)
Species
Navicula zanoni
Neidiwn iridis
Nitzschia aciculavis
Nitzschia actinastroides
Nitzschia angustata
Nitzschia filiformis
Nitzschia hantzsahiana
NitzsGhia holsatica
Nitzschia lorenziana ?
Nitzschia palea
Nitzschia pavadoxa
Nitzschia reversa ?
Nitzschia sigmoidea
Nitzschia tvyblionella
Nitzschia tryblionella V. levidensis
Oocystis borgei
Oooystis citriformis
Oocystis pusilla
Ophiocytiwn capitation v. longispinwn
Oscillatoria amphibia
OsciHatoria angusta
Oscillatoria geminata ?
Oscillatoria lirmetioa
Oscillatoria splendida
Oscillatoria subbrevis
Pandorina morion
Pediastrwn biradiatwn
Pediastrum biradiatum v. longeaornutum
Pediastrion bovyanum
Pediastrwn duplex
Pediastvum duplex v. clathratum
Pediastrum duplex v. reticulatum
Pediastrum simplex
Pediastvum simplex v- duodenarium
Pediastvum tetras
X*
0
0
87
105
0
11
1
0
9
43
34
rt "jrt
272
0
0
0
0
107
/• rt Ji /\/\
68499
68
0
0
7
0
0
0
40
36
0
n**
1
1
9
1
1
5
3
2
3
1
1
3
o ^
21
2
4
3
1
3
3
%***
1.2
1.2
10.5
1.2
1.2
5f\
.8
In
.2
3.5
2.3
3.5
1O
.2
1/5
.2
1.2
In
.2
1.2
1O
.d
In
.2
2-5
.O
3.5
10
.£.
In
.C.
In
.1
f\ A M
24.4
2.3
In
.2
4 mm
.7
3r-
.5
In
.2
3.5
8T
.1
3c
.5
4 "7
.7
50
.0
3.5
4-j
.7
* x = Mean algal units per ml
** n = Number of occurrences
*** % = Percent occurrence
33
-------
TABLE 7. PHYTOPLANKTON SPECIES OCCURRENCE AND ABUNDANCE (Continued)
Species
Pediastvum tetras v. tetraodon
PevLd-inium pus-ilium
Peridinivm quadridens
Peridinium umbonatum
Phaeus aouminatus
Phaous anomalus
Phaaus oaudatus
Phaous ourvioauda
Phaeus glaber
Phaous helikoides
Phaous longioauda
Phaous megalopsis
Phaous nordstedti-i
Phaous ovb-iculayis
Phaous pleuvonectes
Phaous pseudonordstedti-i
Phaous pymm
Phaous sueaious
Phaous tortus
Phaous trimarginatus
Pinnulavia gentilis
P-Lnnular-La gibba
PleuTos-igma delioatulum
Ptevomonas angulosa
Pteromonas ovuoiata
Raphidiopsi-s ouwata
Khopalodia gibba
Soenedesmus abundans
Soenedesmus acuminatus
Soenedesmus aoutus
Soenedesmus anomalus
Soenedesmus anomalus v. aoaudatus
Soenedesmus apioulatus
Soenedesmus arouatus
Soenedesmus armatus
X*
59
73
70
26
5
0
0
0
0
0
8
0
33
0
0
o
o
w
0
\j
8
\j
o
w
o
\J
o
\J
o
\J
25
o
3948
o
235
70
/o
n
u
n
u
CQ
oy
143
n**
7
1
2
5
3
2
2
6
3
4
6
\j
7
/
1
I
2
C.
T
1
2
C.
•*
U
2
£_
A
t
1
I
1
1
1
1
]
14
0
L.
3
9
i
I
i
I
1
<£***
8.1
1.2
2.3
5.8
3.5
2 3
b_ • w
2 3
L» • w
7 0
r * W
3 5
w • *•/
4 7
~ • /
7 0
/ • v
fi 1
O • 1
1 2
1 • t.
2 ^
C . «3
1 2
1 . C.
2 "^
c. . o
^ c;
o . 0
2 ^
c . J
A 7
4 . /
1 2
1 . £
1 2
I . t
1 9
1 . &
1 2
1 . c
16.3
20
. 0
3.5
20
. 0
10.5
4"?
.7
2.3
1.2
1O
.2
10
.2
2.3
1.2
* x = Mean algal units per ml
** n = Number of occurrences
*** % = Percent occurrence
34
-------
TABLE 7. PHYTOPLANKTON SPECIES OCCURRENCE AND ABUNDANCE (Continued)
Species
Scenedesmus armatus V. bicaudatus
Scenedesmus armatus V. boglaviensis V. bicaudatus
Scenedesmus bicaudatus
Scenedesmus bi-juga
Soenedesmus bijuga f. ivvegularis
Scenedesmus bijuga V. flexuosus
Scenedesmus bras-iliensis
Scenedesmus dentioulatus
Scenedesmus denticulatus V. linearis
Scenedesmus dimorphus
Scenedesmus ecornis V. discifovmis
Scenedesmus inteYmedius
Scenedesmus intevmedius V. bicaudatus
Scenedesmus obliquus
Scenedesmus opoli-ensi-s
Scenedesmus ovaltevnus
Scenedesmus protubevans
Scenedesmus quadriaauda
Scenedesmus raciborskii f. gvanulatus
Schizochlamys delioatula ?
Sdwoedewia setigera
Skeletonema potamos
Spermatozoopsis exultans
Sphaerocystis ? schroeteri
Staurastrum ouspidatw ?
Staurastmon tetvaceTiffn
Stephanodi-scus astraea
Stephanodiscus niagarae
Swri,-pe11a lineari-s
Surivella ovata
Synedra CLOUS
Synedra gaillonii-
Synedra ulna
Synedra ulna v. oxyphynchus
Synedra ulna vars.
X*
0
0
18
68
0
0
f\ o
83
29
0
69
51
40
57
0
233
0
118
161
39
0
71
168
307
f\ f\
28
n yi *\
143
67
M "7
77
0
0
18
0
i "i
11
0
n**
1
1
12
12
1
4
1
42
2
3
8
1
10
34
1
1
1A
2
• *•!
47
15
1
3
%***
1.2
1.2
14.0
14.0
1.2
In
.2
In
.2
4.7
1.2
48.8
2.3
3.5
9.3
1.2
31-
.5
In
.2
11.6
•39.5
1/K
.2
1.2
Uf\
.0
C" A 1
54.7
Irt
.2
10
.£.
1r\
.2
1e\
.2
17.4
8T
.1
2-5
.3
1.2
3.5
10
.2
1 C "3
16.3
2*)
.3
10
,2
* x = Mean algal units per ml
** n = Number of occurrences
*** % = percent occurrence
35
-------
TABLE 7. PHYTOPLANKTON SPECIES OCCURRENCE AND ABUNDANCE (Continued)
Species
Synura uvella
Tabellaria fenestrata
Tetraedron caudatum
Tetraedron caudatum V. longispinum
Tetraedron gracile
Tetraedron minimum
Tetraedron minimum V. scrobiculatum
Tetraedron muticum
Tetraedron muticum f. punctulatum
Tetraedron pentaedricum
Tetraedron regular e
Tetraedron regular e v. granulata
Tetraedron regular e v. incus
Tetraedron trigonum
Tetraedron trigonum V. gracile
Tetraedron timidulum
Tetrastnm elegans
Tetrastnm glabrum
Tetrastnm heteracanthum
Tetrastnm staurogeniaeforme
Thordkomonas ? fedlmanii
Trachelomonas abrupta
Trachelomonas oaudata ?
Trachelomonas crebea
Trachelomonas cylindrica
Trachelomonas fluviatilis
Trachelomonas gibber osa
Trachelomonas hispida
Trachelomonas hispida v. punctata
Trachelomonas intermedia
Trachelomonas lacustris
Trachelomonas longicauda
Trachelomonas oblonga
Trachelomonas planctonica
Trachelomonas playfairii
Trachelomonas pulcherrima
X*
319
0
26
72
0
26
499
111
0
0
84
15
32
4
0
16
31
71
37
74
0
61
o
n
u
28t5
Lm\J\J
o
\J
24
f~^
20
f-\J
26
35
*•* w
0
o
v
0
o
o
0
n**
5
•v
2
2
Lm
2
2
10
1 \J
4
~
5
v/
1
1
1
1
3
*•*
2
t*
4
T
1
1
3
\J
2
6
4
4
20
1
P
1
i
i
i
i
i
2
18
1 O
9
£.
1
I
1
r
i
1
1
%***
5 8
w • \J
2 3
t- • w
9 7
C, • U
2 3
Lm » \J
9 "3
C- , O
n fi
1 1 . U
d 7
t « /
C 0
3 . O
1 ?
1 • L.
1 9
1 . £
•} c
O • 3
9 "3
C • O
A 7
f . /
1 9
1 . C.
9 0
<- . O
7 p.
/ 4 U
4 7
T^ • /
4 7
" • /
23 3
*-*J * O
1 ?
1 • C,
1 9
1 . c.
1 ?
1 . c.
2rt
.3
1 9
1 .i
2O
. 0
1 O
1 .2
50
.8
2.3
2-5
. 0
1 9
1 .£
1 9
1 . £
20
. O
1 9
1 .£
1.2
* x = Mean algal units per ml
** n = Number of occurrences
- Percent occurrence
***
36
-------
TABLE 7. PHYTOPLANKTON SPECIES OCCURRENCE AND ABUNDANCE (Continued)
Species x* n** %***
Traohelomonas rotundata
Tvachelomonas schauinslandii
Traohelomonas sparse-setulosa ?
Tvaohelomonas upoeolata
Tvaohelomonas verrucosa
Traohelomonas volgensis
Traahelomonas volvoaina
Treubaria seHgerum
Treubaria triappendiaulata
Volvox tevtius
0
2
32
0
0
0
94
0
89
0
1
2
1
1
1
1
14
1
2
1
1.2
2.3
1.2
1.2
1.2
1.2
16.3
1.2
2.3
1.2
* x = Mean algal units per ml
** n = Number of occurrences
*** % = Percent occurrence
37
-------
Although diatoms numerically dominated the flora of the inlet water, the
species involved were not restricted to that habitat. No diatom achieving
dominant status was found only in inlet waters; in fact, most were widespread
and abundant in the other habitats. It appears that diatom dominance in
inlets can be attributed to the scarcity of successfully competing non-diatom
forms.
Centric diatoms predominated over pennate diatoms in abundance and
accounted for 78 percent of all dominant diatom occurrences (Table 6) Most
often they were species of the genera Mel osira. Stephanodiscus. Skeletonema.
and Cyclotella (Table 8). As a group, centric diatoms are associated with
high nutrient water. Indeed, Melosira ^ranulata. M. varians, Cyclotella
meneghiniana. Stephanodiscus astraea, and Ske1etonema~potamoi. all r.nmmnn to
Atchafalaya (Table 7), are known to be indicator species of eutrophic waters
and/or organic pollution (Hutchinson 1967, Palmer 1969, Weber 1970).
a 1? of special interest since it was the most successful genus
encountered in terms of dominance within the Atchafalaya Basin. It was repre-
?S«5 ± cf6? Spe™6S and vaneties' six of ^ich attained dominance in at
least one sample. The genus was excluded as a dominant form from the floras
of Lake Verret and Pat Bay, both outside the Basin proper Melosira was most
important during the months immediately following minimi waBFTivflst around
December, and again at maximum water levels around April. Ieveii» druj"
M6lOSura JLStanL' the most comnion species in the study was most prominent
from November tfiHugF January, just after low water. Another period of prom" -
'
Lownq- ,- ' before the hl'9h waer maximu.
Lowe (1974) classifies M. distans as an oligotrophic-dystrophic form, which is
interesting because the Atchafalaya has a substantial nutrient load However,
due most probab y to sediment load, light is not available to stimu ate high
primary production by algae. Wang (1974) noted this same phenomenon in the
Illinois River. Melosira granulata and M. -granulate var. anaustissima both
a's d^d' MC dl ianf rbutd!n "Jj **%* d™Ina™^ the same* low wlte> Hods
as did M. distans. but together they peaked four times during the oeriod of
high water, extending from March through June. perioa or
Melosira varians., a noted indicator of eutrophic water (Lowe 1974}
?hpUl!!rV ^"ff thre? t1mes 1n three separate areas" It occurred in
the east-side site (January), Buffalo Cove (April), and the Inlet (December)
ir
ent
.. ughespec
name Microsiphona potamos, found it to be widely distr buted in riv^fof the
EPA Water Pollution Surveillance System but abundant only In alkl ine streSS
receiving organic and/or inorganic enrichment. In his study, the organism Ss
nUerS fr°mate May to December In
Pi\/£>y r-in/^-iiiini-t-H' nu?« T .. —J — --w-wMiwt! in i_iutic riiaini
River, Cincinnati, Ohio. In our studies S. potamos attained dominance in
December during low water at the inlet stations; in swamp areas it became
important during high water periods in April and June as wen
38
-------
TABLE 8. PHYTOPLANKTON GENUS OCCURRENCE AND DOMINANT OCCURRENCE
CO
vo
Genus
Achnccnthes
Actinastman
Amphora
Anabaena
Anabaenopsis
ArikLs trodesmus
Aphanizomenon
Aphanocapsa
Aphanothece
Arthrospira
Asterionella
Campylodisous
Carter-La
centric diatom*
Ceratium
Chaetooeras
Chitomonas
Ch lamydomonas
Chlorella
Chlorococcales*
Chlorogoniwn
Chaorophyta*
Chrooeoeaus
Chroomonas
Ckrysoeoeeus
Chrysophyta*
Closteri-wn
coccoid*
Coccone-Ls
Coetastvum
Cosoinodiscus
Cosmariton
Crucig&n'ia
Occurrence
7
22
1
23
3
50
8
3
1
1
35
1
11
27
4
1
3
24
' 1
5
4
6
2
16
2
1
31
4
23
16
16
2
19
Dominant
Occurrence
-
_
1
_
10
_
_
_
2
-
14
mf
_
5
_
-
_
2
_
10
_
_
1
_
1
3
-
Genus
Cryptamonas
Cyanophyta*
Cyolotella
Cyli-ndrospevmum ?
Cymatoplueva
Cyrribella
cyst*
j — —
Daaty loaoaaopsis
Diatoma
Dictyosphaerium
Dinobryon
dinoflagellate*
Diploneis
Elakatothrix
Epithemia
Euastrtm
Eudorina
Euglena
Eunotia
flagellate*
Fragilaria
Franoeia
Frustulia
Glenodi-niim
Gloeoaystis
Golenkinia
Gomphonema
Goni-wn
Gymnodinvum.
Gyrosigma
Eantzahia
Kirchnerie 1 la
Lagerheimia
Occurrence
66
13
43
1
2
13
3
33
5
9
7
1
2
7
4
1
1
53
9
42
6
2
1
13
3
3
25
1
15
15
5
9
1
Domi nant
Occurrence
32
4
12
^
4
—
_
im
-
—
1
26
__
_
_
fm
1
_
—
-------
TABLE 8. PHYTOPLANKTON GENUS OCCURRENCE AND DOMINANT OCCURRENCE (Continued)
Genus
Lepoeinolis
lunate*
Lyngbya
Mallamonas
Mastogloia
Melosira
Merismopedia
Mesostigma
Mic^aetinium
Miorooystis
Mougeotia
Naviciila
Neidium
Nephrocytium
N-Ltzsehia
Oehromonas
Ooaystis
Ophlocytium
Osoillatoria
palmelloid*
Pandorina
Pediastrum
pennate diatom*
Peridinium
Phaous
Phormidiwn
Pirwilc&ia.
Occurrence
15
6
10
5
1
77
20
5
3
14
1
35
2
2
51
1
12
2
53
4
5
17
19
8
33
5
2
Dominant
Occurrence
mm
3
4
_
-
35
-
-
-
2
5
-
-
15
1
1
-
18
—
-
6
-
1
1
—
Genus
Planktonema
Pleurosigma
Pteromonas
Pyrrophyta*
Eaphi-diopsis
Rhophalodia
Rivularia
Saenedesmus
Schizoch lamys
Schroederia
Skeletonema
Spermatozoopsi-s
Sphaeroeys tis
Staurastrton
Stauroneis
Stephanodiseus
Surirella
Synedra
Synura
Tdbellaria
Tetvaedron
Tetrastrum
Thorakomonas
Trachelomonas
Treubaria
Ulothrix
Volvox
Occurrence
2
2
15
1
5
1
1
62
1
10
42
7
2
1
1
42
11
34
2
21
23
1
44
6
2
1
Dominant
Occurrence
-
—
1
-
1
—
-
5
-
1
15
-
-
-
—
14
—
1
-
1
—
7
-
-
* Summary category of forms not identified to genus.
-------
Throughout the Atchafalaya Basin, except in the inlet waters, a wide
variety of flagellates attained dominant and subdominant positions. The
Cryptophyceae (flagellates) ranked second in importance to the centric diatoms
in providing major component species to the samples. This is especially
interesting since only six species were identified in the Atchafalaya samples
(Table 6).
The four major genera of flagellates in order of importance were Cryptomonas,
Chroomonas, Trachelomonas. and Chlamydomonas. These and others can be considered
associates of the swamps and backwater areas. As with the diatoms discussed
previously, the genera and species observed represent forms reported to
prefer organically enriched water.
Three species of Cryptomonas were identified in Atchafalaya samples and
all attained dominance. Members of the genus achieved dominance on thirty-
two occasions, making it second only to Melosira in importance in the Basin.
Only two dominant occurrences were recorded in inlet samples and none in La«e
Verret. The genus occurred widely in all other areas, with no apparent sea-
sonal restrictions.
Although numerous genera (19) and species (85) of Chlorococcales occurred
commonly (Table 7), they rarely became dominant constituents of samples.
MosTdominant occurrences within the group were attributable to Ankistrodesmus
and Scenedesmus with 10 and 5 such occurrences respectively^ All of^the
dominant Ankistrodesmus species occurrences appeared in non-inlet/outlet
samples, particularly in the Fordoche-Buffalo Cove and Lake Verret-Pat Bay
areas. Scenedesmus species was restricted as a dominant to inlet stations.
The blue-green algae (Cyanophyta) ranked fourth, both in the number of
species present and in total number of occurrences. They ranked third, how-
ever behind diatoms and Cryptophyceae in dominant occurrence. At times
blue-green algae were quite prominent, totally dominating the flora of samples
(e.g , Appendix; Lake Verret, 2216, 5-29-74). They did particularly well in
swamp areas and Lake Verret. Oscillatoria species were more successful than
any other blue-green alga.
IMPORTANCE OF PHYTOPLANKTON PRODUCTIVITY
The National Eutrophication Survey (NES) sampled 250 lakes in 17 south-
eastern States during 1973 (U.S. EPA 1975). In the selection °f 1ajes for
this study, strong emphasis was placed on those faced with actual or Potential
accelerated eutrophication problems. Chemical, physical, and biological data
were collected in a similar manner as in the Atchafalaya River Basin Study,
thereby making the two studies directly comparable.
Table 9 presents average algal units per milliliter, total phosphorus
and inorganic nitrogen (Nitrite-Nitrate-N + Ammonia-N) concentrations, and
Secchi disc values for both studies. The phosphorus and inorganic nitrogen
levels encountered in both studies were extremely high.
41
-------
The highest mean total phosphorus concentration occurred in the Basin
,Tc rLr^^n s r
42
-------
TABLE 9. COMPARISON OF ALGAL UNITS PER MILLILITER,
NUTRIENTS AND LIGHT PENETRATION IN THE
ATCHAFALAYA BASIN AND THE 1973 NATIONAL
EUTROPHICATION SURVEY LAKES
Parameter
National Eutrophication
Survey 1973
Atchafalaya
Basin Proper Outside
Mean algal units
per milliliter
Mean total
phosphorus
(micrograms/liter)
Mean inorganic
nitrogen
(micrograms/liter)
Mean Secchi disc
(inches)
17,600
143
742
48
1,200
194
613
13
42,000
148
590
13
43
-------
REFERENCES
Basharin, G. P. 1959. "On a statistical estimate for the entrophy of a
sequence of independent random variables." Theory of Probability and its
Application (translation of "Teoriya Veroyatnosei i ee Primeneniya").
N. Artin, ed. Society for Industrial and Applied Mathematics,
Philadelphia, pp. 333-336.
Brillouin, L. 1962. Science and Information Theory (2nd edition). New York
Academic Press. ~~~
Bryan, C. F., F. M. Truesdale, and D. S. Sabins. 1975. Annual Report -
A Limnological Survey of the Atchafalaya Basin. Louisiana Cooperative
Fishery Research Unit, School of Forestry and Wildlife Management,
Louisiana. 203 pp.
Gagliano, S. M., and J. L. van Beek. 1975. Environmental Base and Manage-
ment Study. Atchafalaya Basin. Louisiana". EPA-600/5-75-006. U.S. Envi-
ronmental Protection Agency, Washington, D.C.
Hutchinson, G. E. 1967. A Treatise on Limnology: II. Introduction to
--Biology and the Limnoplankton. John Wiley and Sons, Inc.,
York. 1,115 pp.
Lambou, V. W. , S. C Hern, FA. Hiatt, J. W. Hilgert, L. R. Williams,
nt Ph X£E Jtn' •* F0™?1 W',Dr Taylor' (1n Preparation) Distribution
of Phytoplankton in Louisiana Lakes. Working Paper No. 696. Environmental
Monitoring and Support Laboratory, Las Vegas, Nevada, and Corvallis
Environmental Research Laboratory, Con/all is, Oregon. 100 pp.
Lowe, R. L. 1974. Environmental Requirement and Pollution Tolerant of
ponds and iakes-M
Pielou, E. C. 1966. "The measurement of diversity in different types of
biological collections." J. Theoret. Biol. 13:131-144?
Prescott, G. W. 1970. How to Know the Freshwater AlaaP. Wm C Brown
Company Publishers, Uubuque, Iowa? 348 pp. - ^
Sager, P E., and A. D. Hasler. 1969.
44
-------
U S Environmental Protection Agency. 1975. National Eutrophication Survey
Methods 1973-1976. Working Paper No. 175. Environmental Monitoring and
Support Laboratory. Las Vegas, Nevada, and Con/all is Environmental
Research Laboratory, Corvallis, Oregon. 91 pp.
Wang, W. C. 1974. "Effect of turbidity on algal growth." Illinois State
'water Survey Circ. 121:2-12.
r I 1970 "A new freshwater centric diatom Microsiphona potamos
gen. et st nov." J. Phycol. 6(2):149-153.
S M 1976 "Indexes associated with information theory in water-
qualiiy." Jour. WPCF. 48(8):2026-2031.
45
-------
APPENDIX. SUMMARY OF PHYTOPLANKTON DATA
This appendix was generated by computer. Because it was only possible
to use upper case letters in the printout, all scientific names are printed
in upper case and are not italicized.
The alphabetic phytoplankton lists include taxa without species names
(e.g., EUNOTIA, EUNOTIA #1, EUNOTIA ?, FLAGELLATE, FLAGELLATES, MICROSYSTIS
INCERTA ?, CHLOROPHYTAN COCCOID CELLED COLONY). When species determinations
were not possible, symbols or descriptive phrases were used to separate taxa
for enumeration purposes. Each name on a list, however, represents a unique
species different from any other name on the same list, unless otherwise
noted, for counting purposes.
Numbers were used to separate unidentified species of the same genus. A
generic name listed alone is also a unique species. A question mark (?) is
placed immediately after the portion of a name which was assigned with uncer-
tainty. Numbered, questioned, or otherwise designated taxa were established
on a lake-by-lake basis; therefore NAVICULA #2 from lake A cannot be compared
to NAVICULA #2 from lake B. Pluralized categories (e.g., FLAGELLATES, CENTRIC
DIATOMS, SPP.) were used for counting purposes when taxa could not be properly
differentiated on the counting chamber.
46
-------
ATCHAFALAYA
STCPET MJMBER: A001000
NYGAARD TROPHIC STATE INDICES
DATE 11 18 74 12 09 74 01 14 75
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENGPHYTE
OIATCM
COMPOUND
3.00 E
4.00 f
0.14 ?
1.40 E
15.0 E
04/0 E
04/0 E
0.25 E
0.83 E
15/0 E
03/0 E
05/0 E
0/08 ?
0.46 E
14/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 11 18 74 12 09 74 01 14 75
GENLS
SPECIES
06
00
01
00
01
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
CATE 11 18 74 12 09 74 01 14 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER CF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER Of INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER CF INDIVIDUALS/TAXA
NUMBER/ML OF MOST ABUNDANT TAXON
H
s
f.
tH
C
N
J
L
K
2.22
22.00
1.00
4.46
885.78
399.00
0.50
18.14
167.00
2.91
24.00
1.00
4.58
3870.30
1330.00
0.64
55.42
318.00
1.33
29.00
1.00
4.86
1067.99
803.00
0.27
27.69
581.00
-------
ATCHAFALAYA
STORET NUMBER: AOOIOOO
CONTINUED
-fa.
00
11 18 74
12 09 74
01 14 75
TAXA
ACHNANThES tl
ACTINASTRUK HANTZSCHII
V. FLUVIATILE
ANABAENA
AKKISTRODFSMUS ?
AMKISTRCDESMUS FALCATUS
ANKISTRCDESMUS FALCATUS
V. MIPABILIS
ASTERICNELLA FORKCSA
CENTRIC DIATOM
CENTRIC DIATOMS
CHLAMYCCPCNAS GLCBOSA
CHLOROPHYTAN COLONY
CHRCOCCCCUS
CHPCCMCNAS
CLOSTERIUM
CCCCOIC CELL
COCCONEIS
CCELASTP.UM
CCSCINOCISCUS DENARIUS
COSCINOOISCUS LACUSTRIS
CCSCINCCISCUS ROTHII
V. SU8SALSA
CROCIGEMA CUAORATA
CRVPTOHCNAS
CRYPTOMCNAS 7
CRYPTOHCNAS EROSA
CRYPTCKCNAS REFLEXA
CYANUPHYTAN FILAMENT
CYCLOTELLA
CYCLOTELLA fENENGHIM A^A
CYKATOPLEURA SOLEA
FORM
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
SC
8.3
3 8.3
5 8.3
2141.9
1
ALGAL
UNITS
PER ML
33
X
X
X
X
33
33
I 167
S
5
*C
2.2
8.7
2.2
4.4
ALGAL
UMTS
PER ML
X
X
29
X
life
2S
58
S
4
5
xc
2.1
2.7
ALGAL
UNITS
PER ML
X
22
X
x
22
X
x
X
X
-------
ATCHAFALAYA
STCRET NUMBER: A001000 CONTINUED
to
11 18
12 09 74
01
75
TAXA
CYPBELLA
CACTYLOCCCCCPSIS IRREGULAR IS
DIATOMA VULGARE
OIKCBRYCN SERTULARIA
EL.GLENA
EUGLENA *1
EUGLENA ACUS
FRAGILARIA
FRAGILARIA CROTONENSIS
FRU5TULIA RHOMBOIDES
GCfPHGNEHA
GYRCSIGMA
GYPCSIGMA SCALPRCIOES
MELOSIRA
il
DISTANS
GRANULATA
ITALICA
ITALICA ?
VARIANS
INCERTA
KELCSIRA
MELOSIRA
MELOSIRA
MELCSIRA
MELOSIRA
MELCSIRA
MICROCYSTIS
NAVICULA
NAVICULA il
NAVICULA «2
NAVICULA 2ANON I
NEIOIUP
NEIDIUM IRIOIS
MTZSChIA
NITZSCHIA <1
NITZSCHIA *2
NITZSCHIA TRYBLICNELLA
OSCILLATORIA
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
S
zc
ALGAL
UNITS
PER ML
X
X
X
X
X
S
3
2
*C
1
2.21
23.9
17.*
ALGAL
UNITS
PER fi.
X
29
X
X
313
231
X
X
X
S
2
3
XC
11.1
11.1
ALGAL
UNITS
PER ML
X
X
X
X
X
89
89
X
X
X
X
X
X
-------
ATCHAFALAYA
STORE! NUMBER: A001000
CONTINUED
01
O
TAXA
CSCILLATORIA tl
OSCILLATORIA »2
OSCILLATORIA LIMNETICA
PALMELLC1D COLONY
PECIASTRUM BORYANUM
PECIASTRCf DUPLEX
V. RET1CULATUM
PfcNNATE
PTERCMONAS ANGULCSA
SCENEOESMUS ACUHINATUS
SCENEOESMUS BICAtDATUS
SCENEDESMUS DIMORPHUS
SCENEOESHUS INTEPNEDIUS
V. 8ICAUOATUS
SCENEDESMUS OPOLIENSIS
SCENEDESHJS PROTUBERANS
SCENEDESMLS QUADRICAUDA
SKELETONEMA POTAMOS
STEPHANCDISCUS
STEPhANCDISCUS ASTRAEA
STEPHANCDISCUS NIAGAPAE
SURIRELLA
SYNEORA
SYNEDRA GAILLONII
SYKEDRA ULNA
TRACHELCHCNAS
TRACHELOMCNAS INTERMEDIA
TOTAL
11 18 74
12 09
01 14 75
| ALGAL
UNITS
FORM IS *C PER ML
FIL 11125. 11 100
FIL
FIL
COL
COL
COL
CEL
CEL
COL
CCL
CEL
COL
COL
COL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
8.31 33
X
X
X
X
X
X
X
ALGAL
UMTS
S 1C PER ML
4
1
2.2
19.5
15.2
X
X
X
29
260
2C2
X
2.21 29
ALGAL
UNITS
S XC PER ML
1
72.4
X
X
X
X
581
X
399 1330 803
-------
ATCHAFALAYA
STCRET NUMBERS AOOIOOO
CONTINUED
DATE
HYXOPHYCEAN
CHLORCPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
NYGAARD TROPHIC STATE INDICES
04 17 75 06 10 75 12 18 75
0/01 0
4.00 E
0,50 E
2.25 E
15.0 E
02/0 E
04/0 E
0.33 E
0.57 E
12/0 E
02/0 E
02/0 E
0.25 E
0.66 E
11/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 04 17 75 06 10 75 12 18 75
GENUS
SPECIES
01
00
01
00
05
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 04 17 75 06 10 75 12 18 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY KAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
PEAN NUMBER OF INDIVIDUALS/TAXA
NUM3ER/ML OF MOST ABUNDANT TAXCN
H
S
M
CH
0
N
J
L
K
2.74
27.00
1.00
4.75
1394.66
509.00
0.58
18.85
169.00
2.36
20.00
I. 00
4.32
908.60
385.00
0.55
19.25
129.00
3.69
18.00
1.00
4.17
2889.27
783.00
0.88
43.50
166.00
-------
ATCHAF4LAYA
STCPET NUMBER: AOOIOOO
CONTINUED
04 17 75
06 10 75
12 18 75
ro
TAXA
ACHNANTHES 11
ACTINASTRUM HANTZSCHII
V. FLUVIATILE
ANABAENA
ANKISTRCDESMUS ?
ANKISTRCDESMUS FALCATUS
ANKISTPCCESPUS FJLCATUS
V. MIRABILIS
ASTERIONELLA FORMOSA
CENTRIC DIATOM
CENTRIC DIATOMS
CHLAHYCOONAS GLOBOSA
CHLORUPHVTAN COLCNY
CHRCCCCCCUS
CHPOCMCNAS
CLCSTERItM
CCCCCIC CELL
COCCQNEIS
COELASTRLK
CCSCINCOISCUS OEN4RIUS
CCSCINCOISCUS LACUSTPIS
COSCINCCISCUS ROTHII
V. SUBSALSA
CRUCIGEMA CUAORATA
CRYPTCfCNAS
CRYFTOfOKAS ?
CRYPTOHCNAS EROSA
CRYPTCPCNAS REFLEXA
CYANUPHYTAN FILAMENT
CYCLOTELLA
CYCLCTELLA NENENGHINIANA
CYKATCPLEU*A SOLEA
FORM
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
S
1
2
*C
6.7
33.2
6.7
13.4
ALGAL
UNITS
PER ML
X
X
34
X
169
34
X
X
X
X
X
68
X
X
X
S
3
iC
a. 3
16.6
ALGAL
UMTS
PER PL
X
32
64
X
X
S
3
SEC
3. a
11.6
3.8
ALGAL
UNITS
PER ML
30
91
30
-------
ATCHAFALAVA
STORE! NUMBER: A001000 CONTINUED
en
U>
04 17 75
06 10 75
12 18 75
TAXA
CYP8ELLA
CACTYLCCOCCOPSIS IRREGULAR IS
DIATOMA VULGARE
DINCBRYCN SERTULARIA
EUGLENA
EUGLENA 01
EUGLENA ACUS
FRAG1LARIA
FRAGILARIA CROTCNENSIS
FRtSTULIA RHOHBOIDES
GCfPHOhENA
GYPOSIGMA
GYFOS1GHA SCALPPCICES
MELOSIRA
#1
CISTANS
GRANULATA
ITAL1CA
ITALICA ?
VARIANS
INCERTA
MELOSIRA
MELOSIRA
HELQSIRA
MELOSIRA
MELOSIRA
HELCSIRA
MICROCYSTIS
NAVICULA
NAVICULA 01
NAVICULA #2
NAVICULA ZANONI
NEIOIUK
NEIDIUM IRIDIS
MTZSCHIA
NITZSCHIA Kl
NITZSCHIA #2
NITZSCHIA TRYBLIONELLA
OSCILLATCRIA
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
ALGAL
UNITS
»C PER ML
6.7
1
34
X
X
4(13.41 68
3|13.4| 68
ALGAL
UNITS
S 5CC PER ML
2
5
24.9
8.3
X
X
96
X
X
32
X
X
ALGAL
UNITS
S *C PER ML
2
3.81 30
i.9| 15
3.8
3.8
17.4
3.8
30
30
136
30
3.81 30
3.81 30
1
3.81 30
-------
ATCHAFALAYA
STORET NUMBER: AOOIOCO
CONTINUED
tn
TAXA
CSCILLATORIA 01
GSCILLATORIA §2
CSCILLATORIA LIMNETICA
PALPELLCID COLONY
PECIASTRUH BORYANUM
PECIASTRUP DUPLEX
V. HETICULATUM
PENNATE
PTERCMCNAS AN6ULCSA
SCEKEDESMUS ACUMINATUS
SCEKEOESHUS BICAUOATUS
SCENEOESMUS OIMCPPHUS
SCENEOESHUS INTERMEDIUS
V. BICAtCATUS
SCENEDESMOS OPQLIENSIS
SCESEOESKUS PROTUBERANS
SCENEOESMLS QUAORICAUOA
SKELETCNEMA POTACOS
STEPHANCDISCUS
STEPHANODISCUS ASTRAEA
STEPI-ANCOISCUS NIAGARAE
SURIRELLA
SYNEORA
SYNECPA GAILLONI!
SYNEORA ULNA
TRAChELOMCNAS
TRAChELCI'CNAS INTERMEDIA
17 75
06 10 75
12 18 75
FCRH
FIL
FIL
FIL
CCL
COL
COL
CEL
CEL
COL
COL
CEL
COL
CGL
COL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
15
1
ZC
1 6.7
1
ALGAL
UNITS
PER ML
X
X
X
X
X
X
34
1
S
1
4
-------
ATCHAFAIAYA
STORE! NUMBER: AC02CCO
NYGAARD TROPHIC STATE INDICES
DATE II 18 74 12 09 74 01 14 75
HYXOPHYCEAN
CHLOROPHYCEAN
EUGLENCPHYTE
01ATOM
COMPCUNO
0/01 0
0/01 0
0/0 ?
2.00 E
2.00 E
1.00 E
2.00 E
0.33 E
02/0 E
6.00 E
0/01 C
1.00 E
2.00 E
1.00 t
6.00 E
tn
in
PALMER'S ORGANIC POLLUTION INDICES
DATE II 18 74 12 09 74 01 14 75
GENUS
SPECIES
03
00
01
00
00
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 11 18 74 12 09 74 01 14 75
AVERAGE DIVERSITY H 0.01 1.36 1.85
NUMBER OF TAXA S 5.00 9.00 12.00
NUMBER OF SAMPLES COMPOSITED M 1.00 1.00 1.00
MAXIMUM DIVERSITY MAXH 2.32 3.17 3,58
TOTAL DIVERSITY D 0.65 584.80 414.40
TOTAL NUMBER OF INDIVIDUALS/ML N 65.00 430.00 224.00
EVENESS COMPONENT J 0.00 0.43 0.52
I-EAN NUMBER OF INDIVIDUALS/TAXA L 13.00 47.78 18.67
NtMUER/PL CF f«OST ABUNDANT TAXCN K 65.00 215.00 96.CO
-------
ATCHAFALAVA
STCRET NUMBER: A002COO
CONTINUED
11 18 74
12 09 74
01 14 75
TAXA
ANABAENA
ANAEAENA PLANCTONICA
AMUSTRCDESMUS ?
CENTRIC DIATOM
CERATIUM URUNDINELLA
F. FURCOIOES
CHLAMYDCMONAS
CHLOROPHYTAN CYST
CLCSTERIUM
CRUCIGEKIA CUAORATA
CRYFTOMONAS
Ui CRYPTOMCNAS MARSSOMI
°* CYANOPHYTAN FILAMENT
CYCLOTELLA
CYCLOTELLA MENENGHINIANA
CYFBELLA
CYST ?
CACTYLOCOCCOPSIS
DACTYLCCCCCCPSIS IRPEGULARIS
DICTYOSPHAERIUM EHRENBERGIANUM
ELAKATCTHRIX GELATINOSA
EPITHEMIA
EUCORINA ELEGANS
EUGLENA «1
EUGLENA *2
EUGLENA GRACILIS
EUGLENA TRIPTERIS
EUNQTIA
FLAGELLATE #1
FLAGELLATE *3
FLAGELLATES
GLENOOIMUM CCULATUM
FORM
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
ALGAL
UNITS
S *C PER ML
X
X
ALGAL
UNITS
S *C PER ML
3
10.0
X
X
X
43
ALGAL
UNITS
S 1C PER ML
1
42.9
3114.3
I
96
X
X
32
X
-------
ATCHAFALAYA
STCRET NtHBERJ A0020CO
CONTINUED
01
TAXA
GCMUM PECTORALE
GYMNGDIMUM ALBULUM
GYPOSIGM* SCALPRCICES
LYNGBYA ?
HELGSIRA
MELCSIRA OISTANS
MELOSIRA GRANULATA
HELCS1RA VARIANS
MICROCYSllS INCEPTA
NAVICULA
NITZSChIA «1
N11ZSCHIA *2
NITZSCHIA 13
NITZSCHIA ACICULARIS
NITZSCHIA LORENZIANA ?
OOCYSTIS
OSCILLATORIA
OSCILLATORIA ?
OSCILLATCRIA LINNET ICA
PALKELLCIO COLONY
FECIASTRUH DUPLEX
PENNATE
PERIOINIUM UHBQNATUM
PHACLiS
PHACLS CLRVICAUDA
SCENEDESHUS
SCENEDESfUS DIHCPPHUS
SCENEOESHLS QUAORICAUOA
SKELETCNEHA POTAHOS
STAURASTRUM
STEPHANODISCUS
SYNECRA
11 18 74
12 09
01
75
FORM
COL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
COL
FIL
FIL
FIL
CEL
COL
CEL
CEL
CEL
CEL
COL
COL
CCL
CEL
CEL
CEL
CEL
S
1
*C
100.
ALGAL
UNITS
PER ML
X
65
X
S
2
\
*C
40.0
50.0
ALGAL
UNITS
PER ML
172
215
X
X
X
S
2
4
«C
28.6
14.3
ALGAL
UMTS
PER ML
X
X
64
32
X
-------
cn
Co
ATCHAFALAYA
STCRET NUMBER: AC02000
CONTINUED
11 18 74
12 09 74
01 14 75
TAXA
SVKEORA ACUS
IABELLARIA FENESTRATA
TETRAECRON MINIMUM
TETRASTRUM
TETRASTRUM STAUROGENIAEFORHE
TRAChELCMONAS
TRACHELCMGNAS CAtOATA ?
TRACHELCMONAS CRE3EA
TRACHELCHCNAS INTERMEDIA 7
VCLVOX TERTIUS
TOTAL
FORM
CEL
CEL
CEL
COL
COL
CEL
CEL
C6L
CEL
COL
S
%C
ALGAL
UNITS
PER ML
S
*C
ALGAL
UMTS
PER ML
S
*C
ALGAL
UNITS
PER ML
X
X
65
430
224
-------
ATCHAFALAYA
STCRET NUMBER: AOQ2000
CONTINUED
NYGAARC TROPHIC STATE INDICES
DATE 0* 17 75 06 10 75 12 18 75
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
OIATCM
COMPOUND
3.00 E
2.00 E
0.60 E
1.00 E
10.0 E
04/0 E
02/0 E
0.33 E
0.80 E
12/0 E
4.00 E
6.00 E
0.50 E
0.67 E
19.0 E
tn
10
PALMER'S ORGANIC POLLUTION INDICES
DATE 04 17 75 06 10 75 12 18 75
GENUS
SPECIES
01
00
02
00
07
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 04 17 75 06 10 75 12 18 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
HEAN NUCBER CF INDIVIDUALS/TAX*
NUMBER/ML OF MOST ABUNDANT TAXON
H
S
H
;H
D
N
J
L
K
1.59
19.00
1.00
4.25
1793.52
1128.00
0.37
59.37
752.00
2.24
19.00
1.00
4.25
4744.32
2118.00
C.53
111.47
1059.00
0.46
32.00
1.00
5.00
16949.16
36846.00
0.09
1151.44
35015.00
-------
ATCHAFALAYA
STGRET NUMBER: A002000
CONTINUED
CT»
o
04 17 75
06 10 75
12 18 75
TAXA
ANABAENA
ANABAENA PLAKCTCMCA
ANKISTROOeSMUS ?
CENTRIC C1ATOM
CERATIU* HIRUNDINELLA
F. FUPCCIOES
CHLAHYCCMCNAS
ChLOROPHYTAN CYST
CLCSTERIUX
CRLCIGEMA QUADRAT A
CRYPTCHGNAS
CRYPTCfCNAS MARSSONII
CYANOPHYTAN FILAfENT
CYCLOTELLA
CYCLOTELL* HENENCH IN IANA
CYH8ELLA
CYST ?
DACTYL DC CCCOPSIS
CACTYLOCOCCOPSIS IRREGULAR! S
OICTYOSPHAERIUM EHRENBERGI AHUM
ELAKATOTHRIX GELATINOSA
*2
GRACILIS
TRIPTE^IS
EUCORINA ELEGANS
EUGLENA *1
EUGLENO
EUGLE.NA
EUCLENA
tUNCTIA
FLAGELLATE II
FLAGELLATE *3
FLAGELLATES
GLENOOINIUH OCULATUM
fORH
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
3
5
1
4
*C
I
1 4.2
4.2
66.7
4.2
ALGAL
UMTS
PER HL
47
X
X
X
47
752
47
X
S
4~
5
-------
ATCHAFALAYA
STCWET NUMBER: Aooaooo
CONTINUEC
17 75
06 10 75
12 18 15
TAXA
GCMUM PECTORALE
GYMNODINIU* ALBULUM
GYROSIGMA SCAtPROlDES
LYNGBYA ?
MELOSIRA
MELOSIRA OISTANS
NELQSIP* GRANULATA
MELOSIRA VARIANS
FICROCYSTIS INC6RTA
NAVICULA
N1TZSCHIA *1
NITZSChlA #2
.NITZSCHIA «3
NITZSCHIA ACICULARIS
NI1ZSCHI* LORENZIANA 1
OOCYSTIS
CSC1LLATORIA
OSCILLATCRIA ?
CSCILLATORIA LIMNETICA
PALMELLOIC COLONY
PECIASTRLP DUPLEX
PENMATE
PEPIOINIUH UH80NATUH
PHACUS
PHACCS CURVICAUCA
SCENEOESMUS
SCENEDESFUS OIMOPPHLS
SCENEOESMUS OUADRICAUDA
SKfcLETCNEMA POTAfQS
STAURASTRUM
ST6PHANGCISCU5
SYNECRA
\ ALGAL
| UNITS
FORM IS XC PER ML
COL 1 1
CEL 1
CEL 1
FIL
CEL
1 x
I
1
CEL 12(16.7 188
CEL I
CEL 1
COL 1
CEL 1
CEL 1
CEL
CEL
CEL 1
CEL 1
COL
FIL 1
FIL 1
FIL
CEL
COL
CEL
CEL
CEL
CEL
COL
CCL
COL
CEL
CEL
CEL
CEL
1
4.2
X
X
47
X
X
ALGAL ALGAL
UNITS UNITS
S «C PER HL S *C PER ML
|
0.1
43
1 «
1 *^
1
1
I
1
V
1 *
50.01 1059 13 0.7 255
1 X I
2.1 *4 1
21 0.91
X
1
4.2
2.1
3112.5
88
1
X
t
14
X
X
44
2t5
X
340
X
0.21 85
•
0.2
0.3
C.5
85
128
X
X
17C
0.11 43
-------
ATCHAFALAYA
STORET NUMBER: A002000 CONTINUED
04 17 75
06 10 75
ro
TAXA
SYNEDRA ACUS
TABELLARU FENESTRATA
TETRAECRCN MINIMUM
TETRASTRUM
TfcTRASTRUH STAURCGENIAEFORHE
TRACHELCMCNAS
TRACHELCPONAS CJUDATA 7
TRACHELCMCKAS CRE8EA
TRACHELCMCNAS INTERMEDIA 7
VCLVQX TERTIUS
TOTAL
12 18 75
FORM
CEL
GEL
CEL
COL
COL
CEL
CEL
CEL
CEL
COL
S
1C
ALGAL
UNITS
PER ML
X
X
X
X
S
2
*c
12.5
ALGAL
UNITS
PER ML
265
S
«C
0.1
0.3
ALGAL
UNITS
PER ML
43
128
X
X
1128
2118
36846
-------
JTChAFALAYA
STCRET NUMBER: BOOIOCO
NYGAARO TROPHIC STATE INDICES
DATE 12 09 74
MYXOPHYCEAN
CHLORCPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
03/0 E
02/0 E
0/05 ?
0.80 E
09/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 12 09 74
CO
GENUS
SPECIES
Ol
02
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INCIV ICUALS/ML
EVENESS COMPONENT
PEAN NUMBER OF INDIV IDUALS/TAXA
NUMBER/ML CF POST ABUNDANT TAXON
12 09 74
H
S
M
;n
0
N
J
L
K
1.40
16.00
1.00
4.00
1033.20
738.00
0.35
46.13
510.00
-------
ATCHAFALAYA
STCRET NUMBER: BOO 1000
CONTINUED
er>
12 09 74
TAXA
ACTINASTRUM HANTZSCMI
V. FLUVIATILE
ANKISTFODESMUS
ASTERICNELLA FORfGSA
CHLAMYCCKONAS GLOBOSA
CHPCCMCN/S
OACTYLCCOCCOPSIS IRREGULARIS
MELOSIRA DISTANS
MELCSIPA GRANULATA
HELOSIRA VAR1ANS
NITZSCt-IA »1
NITZSCHIA »2
OSCILLATOR IA
CSC1LLATCRIA LIMKFTICA
PENNATE
STEPhANQOISCUS
SYNEORA ULNA
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
CEL
CEL
S
3
4
1
15
12
*C
3.4
6.9
69.1
1 3.4
117.2
1
ALGAL
UNITS
PER ML
X
X
X
25
51
X
X
X
510
X
X
X
X
25
127
X
TOTAL
738
-------
ATCHAFALAYA
STCRET NUMBER: BC02CCO
NYGAARD TROPHIC STATE INDICES
GATE 12 17 75
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
01/0 E
03/0 E
0.25 E
1.25 E
10/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 12 17 75
Ul
GENUS
SPECIES
01
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER CF SAMPLES COMPOSITED
KAXIMUK DIVERSITY
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT,
PEAN NUKBER OF INDIVIDUALS/TAXA
NLHBER/ML OF COST ABUNDANT TAXCN
12 17 75
H
S
H
MAXH
D
N
J
L
K
2.37
16.00
1.00
4.00
2803.71
1183.00
0.59
73.94
423.00
-------
ATCHAFALAYA
STCRET NUMBER: B002000
CONTINUED
TAXA
ASTERICNELLA FORMOSA
CERATIUM HIRUNOINELLA
F. BRACHYCERAS
EUGLENA GRACILIS
GYROSIGHA
FELCSIR* DISTANS
MELOSIRA ITALICA
NITZSCHI*
CCCYSTIS PUSILLA
CSCILLATORIA
SCENEDESMUS ACUHINATUS
SCENEOESHtS QUAORICAUOA
SKELETONEMA POTAKOS
STEPHANCCISCUS ASTRAEA
STEPMANCOISCUS NIAGARAS
STEPhANCCISCUS SPP.
SYNEORA ULNA
12 17 75
FCRM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
COL
COL
CEL
CEL
CEL
CEL
CEL
S *C
1 1
1 1
1 1
1 3.61
1 1
3)17.81
2135.81
1 3.61
1 1
1 1
1 1
51 3.61
4(14.31
1 1
I 1
1121.51
1 I
ALGAL
UNITS
PER ML
X
X
42
X
211
423
42
X
X
X
42
169
X
X
254
X
TOTAL
1183
-------
ATCHAFALAYA
STORET NUMBER: EOOIOOO
NYGAARD TROPHIC STATE INDICES
DATE 03 19 74 12 09 74 01 15 75
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATOM
COPPCUND
4.00 E
1.00 E
1.00 E
0.75 E
13.0 E
02/0 E
02/0 E
1.25 E
1.67 E
14/0 E
1.00 E
1.00 E
0/02 ?
0.60 E
5.00 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 03 19 74 12 09 74 01 15 75
GENUS
SPECIES
00
00
04
00
03
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 03 19 74 12 09 74 01 15 75
AVERAGE DIVERSITY H
NUMBER OF TAXA S
NUMBER OF SAMPLES COMPOSITED M
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY 0
TOTAL NUMBER OF INDIVIDUALS/ML N
EVENESS COMPONENT J
PEAN NUMBER CF INDIVIDUALS/TAXA L
NUMBER/ML OF KOST ABUNDANT TAXON K
3.35
20.00
1.00
4.32
710.20
212.00
0.78
10.60
66.00
3.03
29.00
1.00
4.86
2802.75
925.00
0.62
31.90
240.00
2.50
15.00
1.00
3.91
1110.00
444.00
0.64
29.60
206.00
-------
ATCHAFALAYA
STORET NUMBERS E001000
CONTINUED
00
03 19 74
12 C9 74
01 15 75
TAXA
ACT1NASTRUN HANTZSCHII
/NABAENA
ANA8AENA ffl
ANABAENA #2
ANKISTPCDESMUS
APHANCCAPSA
ASTERICNELLA FORMOSA
CARTERS
CENTRIC DIATOM
CENTRIC CI ATOMS
CHLAHYOCHCNAS
CLCSTEPIUK
CCCCCNEIS
CfttCIGEhIA FEN6STRATA
CRUCIGEMA TETRAPECIA
CRYPTCKCNAS EROSA
CRYPTOfCNAS HARSSONI!
CRYPTOMCNAS REFLEXA ?
CRYP10HCNAS SPP.
CYANOPHYTAN FILAMENT
CYCLOTELLA *i
CYCLGTELLA KENENGHIMANA
CYCLCTELLA SPP.
CACTYiCCCCCOPSIS
CACTYLOCOCCOPSIS IRREGtjLARlS
DINOBRYCN
DINCBRYtN 6AVARICUM
DINCBRYON DIVERGENS
EUGLENA
EUGLENA #1
EUGLENA ACUS
EUGLENA TRIPTERIS
FORM
COL
FIL
FIL
FIL
CEU
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
2
1
KC
4.2
1.9
18.4
31.1
1.9
ALGAL
UNITS
PER ML
1 9
4
39
X
66
4
X
s
5
2
*C
3.7
7.5
11. 1
3.7
3.7
ALGAL
UNITS
PER ML
34
69
103
X
34
X
34
X
X
S
2
1
1C
7.7
7.7
46.4
7.7
7.7
ALGAL
UNITS
PER *t
34
34
X
X
206
34
34
X
-------
ATCHAFALAYA
STCRET NUMBER: €001000
CQNTINUEC
03 19 74
12 OS 74
01 15 75
TAXA
FLAGELLATE
FLAGELLATE fl
FLAGELLATE *3
FLAGELLATES
GLENCOINIUM OCULATUM
GYMKOOIMUK ORDIKVTUM
GYBGSIGHA ?
LEFOCINCLIS
PELOSIRA
PELCSIfcA OISTANS
KELCSIPA GRANULATA
HELOSIPA GRANULATA
V. ANGLSTISSIMA
KEtOSIPA GRANULATA
V. ANGLSTISSIMA F. SPIRAL!S
HELCSIRA VARIANS
MERISMQPEDIA PUNCTATA
MEHISMCPECIA TENUISSIMA
MESOSTIGPA VIRICIS
NAVICULA
NAVICULA *1
NAVICULA #2
MTZSCHIA ?
MTZSCH* #1
NIT1SCHIA *2
NITZSCHIA 13
MTZSCHI* PALEA
NITZSCHIA SPP.
CSCILLATORIA
CSCILLATORIA 41
OSCILLATORIA *2
CSCILLATORIA LIHNETICA
FCRM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
FIL
FIL
XC
1.91
8.5
1.9
4.2
1.9
1.9
4.2
1.9
ALGAL
UNITS
PER ML
4
18
4
9
4
4
9
1 4
S
I
XC
25.9
3.7
ALGAL
UNITS
PER ML
X
X
240
34
X
X
X
X
X
X
X
X
S
4
5
«C
7.7
7.7
ALGAL
UMTS
PER ML
X
X
X
34
34
-------
'TCHAFALAYA
STORE! MJMBER: EC01CCO CONTINUED
03 19 74
12 09 74
01 15 75
TAXA
PAKCQRINA
PENNATE
PHACUS
PHACtS il
PHACUS TQRTUS
PTEROMCNAS ANGULOSA
PTEROMCNAS CRUCIATA
SCENEDESMUS INTERMEDIUS
SCENEDESPUS PROTU8ERANS ?
SCENEOESMUS SPP.
SOROEDEPIA SETIGERA
SKELETCNEMA POTAHOS
SYNEORA
SYKURA UVELLA
TETRAEORCN MINIMUM
TETRAEDRON REGULARE
V. GRAMjLATA
TETRAECRON TRIGONUM
TRACHELCMCNAS
TRACHELOHCNAS IKTERKEDIA
TRACHEtOMONAS SCHAtINSLANOII
TRAOELOM^AS VOLVCCINA
TREUBARIA
TOTAL
FORM
COL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CQL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
3
XC
1.9
1.9
1.9
8.5
1.9
ALGAL
UNITS
PER ML
1
1 4
4
4
18
4
S
3
4
ZC
3.7
22.3
11.1
3.7
ALGAL
UMTS
PER ML
X
34
X
206
103
34
X
X
S
3
xc
7.7
ALGAL
UNITS
PER ML
34
X
212
925
444
-------
ATCHAFALAYA
STCRET NUMBER: E001000 CONTINUED
NYGAARO TROPHIC STATE INDICES
DATE 04 14 75 06 11 75
MYXOPHYCEAN
CHLORCPHYCEAN
EUGLENOPHYTE
CI ATOH
COMPOUND
02/0 E
01/0 E
0/03 7
4.00 E
07/0 E
04/0 E
08/0 E
0.58 E
1.25 E
24/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 04 14 75 06 11 75
GENUS
SPECIES
01
00
12
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 04 14 75 06 11 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES CCHPQSITEC
MAXIMUM DIVERSITY PAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIOUALS/ML
EVENESS COMPONENT
PEAN NUMBER CF INCIVIDUALS/TAXA
NUMBER/ML OF MOST ABUNDANT TAXCN
H
S
M
EH
0
N
J
L
K
1.85
11.00
1.00
3.46
1657.60
896.00
0.53
81.45
474.00
2.90
37.00
1.00
5.21
3004.40
1036.00
0.56
28.00
303.00
-------
ATCHAFALAyA
STORET NUMBER: EOOIOOO
CONTINUED
ro
TAXA
ACTINASTRUM HANTZSCHII
AKABAEN*
ANABAENA #1
AM«ISTPCOESMUS
APHANOCAPSA
ASTERICNELLA FORMOSA
CAPTERI*
CENTRIC DIATOM
CENTRIC CIATOMS
CHLAPYDCMCNAS
CLCSTERIUM
CCCCCNEIS
CRUCIGENIA FENESTRATA
CRUCICENIA TETRAP60IA
CRVPTCHCNAS EROSA
CRYPTOMCNAS MARSSONII
C?YPTQKONAS REFLEXA 7
CRYFTOPCNAS SPP.
CYANOPHYTAN FILAMENT
CYCLCTELLA *1
CYCLOTELLA MENENGHINIANA
CYCLOTELLA SPP.
CACTYLCCCCCOPSIS
CACTYLOCCCCOPSIS IRREGULARIS
CINCBRYCN
CIKC8RYCN BAVARICUM
CINCBRYCN OIVERGENS
EUGLENA
EUGLENA «!
EUGLENA «CUS
EOGLENA TRIPTERIS
04 14 75
06 11 75
FORM
CCL
FIL
FIL
FIL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
ALGAL
UNITS
*C PER ML
5.9
17.6
17.6
5,9
53
158
158
53
ALGAL
UNITS
«C PER ML
16.7
X
X
X
X
X
X
X
X
173
X
X
X
X
-------
ATCHAFALAYA
STORET NUMBER: E001000
CONTINUED
04 14 75
06 11 75
TAXA
FLAGELLATE
FLAGELLATE *L
FLAGELLATE «3
FLAGELLATES
GLENQOINIUM QCULATUM
GYPNCOIMUM CROINATUM
GYRCS1GMA 1
LEPOCINCLIS
MELCSIRA
MELOSIRA DISTANS
MELCSIRA GRANULATA
MELOSIRA GRANULATA
V. -ANGISTISSIMA
PELCSIPA GRANULATA
V, ANGLSTISSINA F. SPIRALIS
KELOSIRA VARIANS
MERISMCPEOIA PUNCTATA
fERISKCFEDIA TENUISSIM.A
4£SOSTIGMA VIRIOIS
NAVICULA
NAVICULA VI
NAV1CULA §2
NITZSCHIC t
NITZSCHIA 01
NITZSCHIA *2
NITZSCHIA #3
NITZSCHIA PALEA
NITZSCHIA SPP.
CSCILLATCRIA
CSCILLATORIA tl
CSCILLATCRIA f2
CSCILLATCRIA LIMNETICA
FORM S
CEL
CEL 1
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CD*
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
FIL
FIL
ALGAL
UNITS
%C PER ML
1
152.91 474
X
X
X
ALGAL
LNITS
«C PER ML
8.3
3.3
4 8.3
X
at
X
86
X
X
X
X
86
X
13112.51 13G
1 1
-------
ATCHAFALAVA
STCRET KUHBER: E001000
CONTINUED
04 14 75
06 11 75
TAXA
PAKDORINA
PENMATE
PHACUS
PHACliS il
FHACUS TORTUS
PTERCHCNAS ANGULCSA
PTERCMGNAS CRUCIATA
SCfcNEOESMUS INTERMEDIUS
SCENEOESKLS PROTUBERANS ?
SCENEOESMUS SPP.
SCMROEDERIA SETIGERA
SKELETCKEMA POTAMQS
SYNEDRA
SYKtRA UVELLA
TETRAEORCN MINIMUM
TETRAECRCN REGULARE
V. GRAKULATA
TETRAEDRCN TRIGONUM
TRACHELCMCNAS
TRACHELCMCNAS INTERMEDIA
TRACHELCMONAS SCHAUINSLANDII
TRACHtLCMCNAS VCLVCCINA
TREtSARIA
TCTAL
FCRM
COL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
ALGAL
UNITS
S *C PER ML
X
X
X
ALGAL
LNITS
S «C PER ML
5
1
8.3
4.2
4.2
29.2
X
X
86
X
X
X
43
43
303
X
X
X
X
896
1036
-------
ATCHAFALAYA
STQRET NUMBER: E004000
NYGAARD TRCPHIC STATE INDICES
DATE 11 19 7* 04 17 75 06 11 75
MYXGPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
6.00 E
7,00 E
1.23 E
2.00 E
33.0 E
02/0 E
01/0 E
1.00 E
0/02 ?
06/0 E
04/0 E
0/0 C
0.25 E
0/01 ?
05/0 E
tn
PALMER'S ORGANIC POLLUTICIS INDICES
DATE 11 19 74 04 17 75 06 II 75
GENUS
SPECIES
07
03
05
00
00
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
CATE 11 19 74 04 If 75 06 U 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER CF SAMPLES COMPOSITED
MAXIMUM DIVERSITY HAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INDIVIDUALS/TAXA
NUMBER/ML OF MOST ABUNDANT TAXON
H
S
M
(H
C
N
J
L
K
2.64
40. 00
1.00
5.32
1623.60
615.00
0.50
15.38
219.00
2.07
10.00
1.00
3.32
815.53
394.00
0.62
39.40
169.00
0.95
7.00
1.00
2.81
2852.65
3003.00
0.34
429.00
1914.00
-------
ATCHAFALAYA
STORET NUMBER: EC04000
CONTINUED
U 19 74
04 17 75
06 11 75
TAXA
AMUSTFCCESHUS ?
ANKISTPCOESMUS FALCATUS
ANKISTRCDESMUS FALCATUS
V. MIPABILIS
APTHROSPIRA
ASTERICNELLA FORMOSA
CHLAMYCCHONAS GLC8CSA
CHLOROPHYTAN CELL
ChFCCMCNAS
CHRYSOCCCCUS ? RUFESCENS
^j CLCSTERIUM *1
O^ COCCCNEIS PLACEKTULA
CRYPTOMCNAS EROSA
CRYPTGMCNAS MARSSONII
CRYPTQKCNAS R6FLEXA
CYANOPHYTAN COCCOID CELLED COLONY
CV*NOPHYTAN FILAMENT
CYCLOTELLA GLOMERATA
CACTYLOCCCCOPSIS IRREGULARIS
ELAKATCTHRIX GELATINCSA
fUGLENA
EUGLENA *1
EOGLENA #2
EUGLENA #3
EUGLENA ACUS
EUGLENA CXYURIS
EoC-LENA TRIPTERIS
EUNCTIA CURVATA
FLAGELLATE
GLENOOIMUM CCULATUM
GYMNQOINIUM AL3ULUM
GYRCSIGMA
FCRH
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CQL
CEL
CEL
CEL
CEL
CEL
COL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
4
1
2
5
?C
17.9
35.6
7.2
3.6
1
ALGAL
UNITS
PER ML
110
X
219
44
X
X
X
X
22
X
X
X
s
4
3
:
sc
21.6
7.1
ALGAL
UNITS
PER ML
X
85
X
X
28
S
2
K
36,3
ALGAL
UNITS
PER ML
X
1089
-------
ATCHAFALAYA
STCRET NUMBER: E004000
CONTINUED
TAXA
LEFQCINCLIS ACUTA
LEPOCINCLIS FUSIFORMIS
LUNATE CELLED COLONY
PELCS1RA OISTANS
MELQSIRA GRANULATA
V. ANGLSTISSIMA
CELOSIRA ITALICA
HELCSIRA VARIANS
PERISMGPEOIA TENUISSINA
NAVICliLA fl
NAVICULA 42
NAV1CULA RADIOSA
NMZSCHIA
NITZSChlA ffl
OSCILLATORI A
CSCILLATORIA §1
OSCILLATORIA LIMNETICA
PEOIASTRUM BIRAOIATUH
FED1ASTRUM DUPLEX
FEDIASTPUM TETRAS
PHACtS CURVICAUDA
PHACUS I-ELIKOIOES
PHACUS LCNGICAUCA
PHACtS PYRUM
PHACUS TRIMARG1NATUS
PHORMIOIUM
SCENE06SKUS DENTICULATUS
SCENEDESCUS OIMORPHUS
SCENEOESMUS QUAORICAUDA
SCHZOCHLAMYS OELICATULA ?
SKELETCNEMA POTAfCS
STEPHANCOISCUS
II 19
04 17 75
06 11 75
| ALGAL 1 ALGAL ALGAL
UNITS UNITS UNITS
FORM IS *C PER ML S *C PER ML S %C PER KL
CEL 1 i
CEL I 1 X 1
COL I I 5114.2 56 I
CEL t
X 1
1 1 1
CEL
1 t 1
C6L II XII
CEL 1 1
COL 1 XI
CEL 1
CEL |
X
CEL 1
CEL X
CEL 1 1
FIL X I 1 X
FIL
FIL
14.3
CCL 1
COL 1
COL 1
CEL
CEL
CEL
CEL
CEL
FIL
COL
COL
COL
CEL
CEL
CEL 13
X
88 1
X
X
X
X
X
X
X
X
X
X
7.21 44
7.2 44
1
1)42.9
169
63.7 1914
X
1
X
-------
00
ATCHAFALAYA
STORET NUMBER: E004000
CONTINUED
II 19 74
04 17 75
06 11 75
TAXA
SYNEDRA
SYNECRA ULNA
TABELLARIA FENESTRATA
TETRASTRUM STAUROGENIAEFORME
TRACHELCMCKAS
TRACHELOMONAS COROATA ?
TRACHELCMCNAS CRE8EA
TRACHELCMOKAS FLUVIATILIS
TRACHELCMONAS INTERMEDIA
TRACHELCMONAS LACUSTRIS
TRACHELCMONAS PLANCTCNICA
TRAChELCMONAS ROTUNCATA
TRACHELCMCKAS VCLVCCINA
TOTAL
FORM
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
«C
7.2
ALGAL
UNITS
PER ML
X
44
X
X
X
X
X
X
615
S
2
1C
14.2
ALGAL
UNITS
PER PL
56
39*
S
XC
-
ALGAL
UNITS
PER ML
X
X
3003
-------
ATCHAFALAYA
STORET NUMBER: £004000 CONTINUED
NYGAARD TROPHIC STATE INDICES
DATE 12 19 75
MYXCPHYCEAN 3.00 E
CHLORCPHYCEAN 4.00 E
EUGLENOPHY1E 1.14 E
CIATCM 0.56 E
COMPOUND 20.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 12 19 75
10 GENUS 10
SPECIES CO
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 12 19 75
AVERAGE DIVERSITY H 2.30
NUMBER OF TAXA S 37.00
NUMBER OF SAMPLES COMPOSITED M I.00
MAXIMUM DIVERSITY PAXH 5.21
TOTAL DIVERSITY D 5411.90
TOTAL NUMBER OF INDIVIDUALS/ML N 2353.00
EVENESS COMPONENT J 0.44
PEAN NUMBER CF INDIVIOUALS/TAXA L 63.59
NUMBER/ML OF MOST ABUNDANT TAXCN K 1313.00
-------
ATCHAFALAYA
STCPET NUMBER: E004000 CONTINUED
12 19 75
CO
o
TAX*
ANKI STRODESMUS ?
ANKISTPCDESMUS FALCATUS
ANKISTRCOESHUS FALCATUS
V. MIRABILIS
ARTHRGSPIRA
ASTERICNELLA FORI-CSA
CHLAMYCCMQNAS GLOBOSA
CHLOROPHYTAN CELL
CHROCHCNAS
CHRYSOCCCCUS ? RUFESCENS
CLCSTEPIUM #1
COCCCNEIS PLACENTULA
CRYPTGHONAS EROSA
CRYPTOKCNAS MARSSONII
CRYPTOMONAS REFLEXA
CYANCPHYTAN COCCOIC CELLED COLONY
CYANOPHYTAN FILAMENT
CYCLOTELLA GLOMERATA
CACTYLCCCCCOPSIS IRREGULARIS
ELAKATCTHRIX GELATINCSA
EUGLENA
EUGLENA «1
EUGLENA *2
EUGLENA 13
EUGLENA ACLS
EUGLENA CXYURIS
EUGLENA TRIPTERIS
EUNOTIA CURVATA
FLAGELLATE
GLENOOIMUI* CCtLATUM
GYMNOOINIUM ALBULUH
GYFCSIGMA
FORM
CEL
CEL
CEL
F1L
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
COL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
«
2
1
3
%C
1.3
3.9
13.0
55.8
2.6
10.4
1.3
3.9
ALGAL
UNITS
PER ML
31
X
92
305
X
X
1313
61
244
31
X
X
X
X
X
X
92
X
-------
ATCHAFALAYA
STCRET NUMBER: EC040GO
CONTINUED
00
12 19 75
TAXA
LEPCCINCLIS ACUTA
LEPOCINCLIS FUSIFQRMIS
LUNATE CELLED COLONY
PELCSIRA OISTANS
KELCSIRA GRANULATA
V. ANGLSTISSIMA
CELCSIRA ITALICA
MELOSIRA VARIANS
KERISHGFEOIA TENU1SSIMA
NAViCULA il
NAVICULA *2
NAVICULA RACIOSA
NITZSCHIA
NITZSCMA il
CSCILLATORIA
CSCILLATORIA *l
CSCILLATCRIA LIHNETICA
PECIASTRUM BIRACIATUf
PECIASTRUM CUPLEX
FECIASTRUM TETRAS
PHACCS CliRVICAUDA
PHACUS hELIKOIDES
PHACCS LCNGICAUCA
PHACUS PYRUM
PHACUS TPIKARGINATUS
PHCRNIDIUM
SCENEDES>»US DENTICULATUS
SCEKEDESMUS CIMCRPHUS
SCENEDESHtS QUADRICACDA
SCHIZOCHLAMYS OELICATULA ?
SKELETCNEMA POTA^CS
STEPHANCOISCUS
1
FORM 1$
CEL
CEL
COL
CEL
CEL
CEL
CEL 1
COL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
FIL
CCL
COL
CCL
CEL
CEL
CEL
CEL
CEL
FIL
COL
CCL
CCL
CEL
CEL
CEL
*C
1
1
2.6|
1
1.3|
1.3
ALGAL
UMTS
PER ML
X
X
X
X
61
X
X
X
31
X
X
31
X
-------
00
PO
ATcHAfALAYA
STCRET NUMBER: EOO^OOO
CONTINUED
12 19 75
TAXA
SYNEORA
SYKEDRA ULNA
TABELLARIA FENESTRATA
TETSASTRUM STAUROGENIAEFORME
TRACHELCMONAS
TRACHELCMONAS COROATA ?
TRAChELOMQNAS CREBEA
TRACHELCfCNAS FLUVIAT1LIS
TRAChELOMCNAS INTERMEDIA
TRACHELCfCKAS LACUSTRIS
TRACHELCMONAS PLANCTCNICA
TRACHELCf
-------
ATCHAFALA*A
STORE! NUMBER! E0080CO
NYGAARD TROPHIC STATE INDICES
DATE 03 19 74 01 23 75 04 17 75
MYXOPHYCEAN
CHLORCPHYCEAN
EUGLENOPHYTE
DIATOM
COP.PCUNO
01/0 E
0/0 0
0/Oi 7
4.00 E
05/0 E
03/0 E
07/0 E
0/10 ?
0.67 E
12/0 E
01/0 E
06/0 E
0.43 E
2.00 E
16/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 03 19 74 01 23 75 04 17 75
00
CO
GENUS
SPECIES
00
00
17
01
04
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 03 19 74 01 23 75 04 17 75
AVERAGE DIVERSITY H
NUMBER OF TAXA S
NUMBER OF SAMPLES COMPOSITED M
MAXIMUM DIVERSITY KAXH
TOTAL DIVERSITY 0
TOTAL NUMBER OF INDIVIDUALS/ML N
EVENESS COMPONENT J
PEAN NUMBER OF INCIVIDUALS/TAXA L
NLMBER/ML OF POST ABUNDANT TAXOK K
2.66
10.00
1.00
3.32
524.02
197.00
0.80
19.70
63.00
3.24
22.00
1.00
4.46
5508.00
1700.00
0.73
77.27
312.00
2.71
21.00
1.00
4.39
11972.78
4418.00
0.62
21C.38
1562.00
-------
ATCHAFALAYA
STCRET NUMBER: EOOSOOO
CONTINUEO
00
TAXA
ACTINASTRUM
ANABAENA
ANK 1ST RODE SNUS ?
AhK 1ST RODE SMUS FALCATUS
ANKISTFCCESMUS FALCATUS
V. HIRABILIS
APHANOCAPSA ELACHISTA
ASTERICNELLA FORMOSA
CACTERIA CORDIFORMIS
CENTRIC DIATOM
CHLAMYDCMCNAS
CHLAHYOCHONAS SPP.
CHFCCMCNAS ACUTA
CHROOMCNAS NORSTEDTII 7
COCCCIC CELL
CCCCCNEIS
COCCCNEIS PLACENTULA
V. EUGLYPTA
CGELASTRUM CAMBRICUf*
V. INTERMEDIUM
CRLCIGEMA FENESTRATA
CRYPTCMCNAS
CRYPTOMCNAS EROSA
CRYPTOMCMS MARSSONI I
CYCLQTELLA MENENGHI NI ANA
CACTYLCCCCCOPSIS
03 19
01 23 75
04 17 75
OICTYOSPHAERIUM PULCHELLU^1
OINCBPYCN DIVERGENS
CIKOFLAGFLLATE
FUGLENA
EUGLENA ACtS
FORM
COL
FIL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
S
4
2
1
ZC
10.7
2.0
23.4
32.0
ALGAL
UNITS
PER ML
21
4
46
63
S
5
3
2
1
*C
10.2
18.4
10.4
12.2
14.3
4.1
ALGAL
UNITS
PER ML
X
X
173
312
176
X
X
X
2C8
243
69
X
S
1
*c
2.6
0.9
2.6
35.4
0.9
ALGAL
UNITS
PER ML
114
X
38
114
1562
X
1 38
-------
ATCHAFALAYA
STORET NUMBER: EOOBOCO
CONTINUED
oo
in
TAXA
EUGLENA CXYURIS
V. MINOR
EUNOTIA
FLAGELLATE *1
FLAGELLATE 12
GLENQDIMUI» CCULATUM
GLGEOCYS1IS
GYPNQDINIUM ALBULUM
LEPOCINCLIS
PELGSIRA
MELCSIRA CISTANS
KELOSIRA GRANULATA
PELOSIRA GRANULATA
V. ANGLSTISSIMA
KELOSIRA VARIANS
MERISMOPEDIA TENUISSIMA
HICRQCYS1IS INCERTA
NEPHROCYTIUM ?
NIT2SCHIA
NITZSCHIA ACICULARIS
OSCILLATORIA
OSCILLMORIA HI
PENNATE
PMACUS
PHACLS LCNGICAUCA
PHACUS ORBICULAR IS
PHACLS SUECICUS
SCENEDESMUS ARCUATUS
SCENEDESMUS 8IJUGA
SCENEDfcSMUS INTERNED IUS
V. BICALCATUS
SCENEDESHUS QUAORICAUDA
03 19 74
01 23 75
17 75
I ALGAL
UNITS
ALGAL ALGAL
LNITS UMTS
FORM IS XC PER ML 1 S *C PER ML S *C PER ML
1
CEL 1
CEL |
CEL I
CEL 1
CEL I
COL
1 2.01 4
CEL 1 I |
CEL I I I
CEL I I !
CEL 1
1
CEL 1
CEL 5110.7
CEL
COL
COL
COL |
CEL 1
CEL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CCL
COL
CCL
COL
2.0
8.6
21
4
17
1
1 1
1 1
1
14(14.3
1
4.1
4.1
4.1
1
1
1 X
5 7.81 343
X I
1
1
X |4|12.l
I2J19.0
X
243
69
69
69
X
1
3113.8
3.4
0.9
I
533
838
61C
X
152
38
X
X
X
-------
00
ATCHAFALAYA
STCRET NUMBER: EC080CO
CONTINUED
TAXA
SCHROECER1A SETIGERA
SKELETChEMA POTACQS
SPHEROCYSTIS
STEPHANCDISCUS NIAGARAE
SYNEORA
T£T«A£CfiCN TUMIOULUM
TRACHELCMONAS
TRACHELCMCNAS SPARSE-SETULOSA ?
TRACHELCMONAS VOLVOCIN4
03 19 7*
01 23 75
04 17 75
FORM
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
S
3
*C
8.6
ALGAL
UNITS
PER ML
17
X
S
*c
4.1
ALGAL
UNITS
PER ML
69
X
S
XC
C.9
ALGAL
UNITS
PER ML
X
X
38
TOTAL
197
1700
4418
-------
fTCHAFALAYA
STCRET NUMBER: E008000
CONTINUED
NYGAARO TROPHIC STATE INDICES
DATE 06 12 75
MYXOPHYCEAN
CHLCRCPHYCEAN
EUGLENQPHYTE
DIATOM
COMPOUND
C4/0 E
03/0 E
1.29 E
0.33 E
17/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE O6 12 75
00
GENUS
SPECIES
03
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 06 12 75
AVERAGE DIVERSITY H
NUMBER OF TAXA S
NUMBER Cf SAMPLES COMPOSITED M
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY 0
TOTAL NUMBER OF INDIVIDUALS/ML N
EVENESS COMPONENT J
*EAN NUMBER OF INDIVIOUALS/TAXA L
M.M6ER/ML OF COST ABUNDANT TAXCN K
2.61
26.00
1.00
4791.05
1705.00
0.60
65.58
515.00
-------
ATCHAFAIAYA
STCRET NUMBER: E008000
CONTINUED
Co
CO
TAXA
ACTINASTRUK
ANABAENA
AKKISTBCDESMUS ?
ANKISTFCDESMUS FALCATUS
ANKISTRCDESMUS FALCATUS
V. HIRA6ILIS
APHANOCAPSA ELACHISTA
ASTERIONELLA FORMOSA
CAPTERI4 CCRDIFCPMIS
CENTRIC CI ATOM
Ct-LAMYOOPCKAS
CHLAMYDCPCNAS SPP.
CHP-OOMCNAS ACUTA
CHRGCMCItAS NORSTEOTII ?
COCCOID CELL
CCCCCNEIS
COCCCNEIS PLACENTULA
V. EtGLYPTA
CCELASTRUM CAMBRICUM
V. INTERMEDIUM
CPUCIGEMA FENESTRATA
CRYPTCMCNAS
CRYPTOMCNAS EROSA
CRYPTOMCNAS MARSSONII
CYCLOTELLA MENENGHIMAKA
CACTYLOCCCCOPSIS
CIATOMA
DICTYOSPHAERIUf FULCHELLUM
CINCBRYCK DIVERGENS
OINCFLAGELLATE
EUGLENA
EUGLENA ACUS
06 12 75
FORM
COL
FIL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
s
2
3
tc
1.91
5.7
1.9
20.8
1.9
ALGAL
UNITS
PER ML
32
97
32
X
X
X
354
X
32
X
X
-------
ATCHAFALAYA
STORET NUMBER: EOOSOOO
CONTINUEC
00
to
06 12 75
TAXA
EUGLENA CXYURIS
V. MINCF
EUNOTIA
FLAGELLATE «1
FLAGELLATE »2
GLENOOINIU* OCULATUH
GLCEOCYSTIS
GY*NODINIUH ALBLLUM
LEPCCINCLIS
PELCSIRA
MELOSIRA OISTANS
MELCSIFA GRANULATA
HELGSIRA GRANULATA
V. ANGLSTISSIHA
NELCSIRA VARIANS
MERISMCPED1A TENUISSIMA
HICROCYSTIS INCERTA
^EPHRCCYTIUM ?
NITZSCHIA
NITZSCMIA ACICULARIS
CSCILLATCRIA
CSCILLATQRIA #1
PENNATE
PHACLS
PHACUS LCNGICAUOA
FHACOS CRBlCULARtS
PHACUS SLECICUS
SCENEDESt'US ARCUATUS
SCENEOESHUS BIJUCA
SCENEDESHUS INTERMEOIUS
V. BICALCATUS
SCENEDESMLS QUACRICAUOA
FORM
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
COL
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
COL
CCL
COL
CCL
S
4
5
XC
3.8
30.2
1
1
1.9
7.6
1.9
ALGAL
UNITS
PER ML
X
64
515
X
X
X
32
129
X
X
32
X
X
-------
ATCHAFALAYA
STCRET NUMBER: EOOBOCO
CONTINUED
06 12 75
TAXA
SCHRCEDERIA SETIGERA
SKELETCNEMA POTAMOS
SPHAEROCYSTIS
STEPHANCOISCUS NIAGAPAE
SYNECRA
TETRAECRCN TUMICULUM
TRACHELOHONAS
TRACHELCMONAS SPARSE-SETULOSA ?
ThACHELCMCKAS VCLVCCINA
TCTAL
FORM
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
S
1
zc
1.9
120.8
ALGAL
UNITS
PER HL
32
| 354
1705
-------
ATCHAFALA/A
STCRET NUMBER: E009000
NYGAARO TROPHIC STATE INDICES
GATE 11 19 74 12 18 75
HYXOPHYCEAN
CHLORCPHYCEAN
EUGLENOPHYTE
DIATCM
COMPOUND
02/0 E
04/0 E
0.67 E
4.00 E
14/0 E
02/0 E
08/0 E
0.70 E
0.71 E
22/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE II 19 74 12 18 75
GENUS
SPECIES
09
00
09
04
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY *AXh
TOTAL DIVERSITY
TCTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
*EAN NUMBER CF INDIVIDUALS/TAXA
NUMBER/ML OF fOST ABUNDANT TAXCN
11 19 74 12 18 75
H
S
M
;n
0
N
J
L
K
3.08
18.00
1.00
4.17
4339.72
1409.00
0.74
78.26
392.00
2.58
31.00
1.00
4.95
9306.06
3607.00
0.52
116.35
1012.00
-------
ATCHAFALAYA
STORET MJMBER: E009000
CONTINUED
10
ro
11 19
12 18 75
TAXA
ACTINASTRUM HAN7ZSCHII
V. FLUVIATILE
ANKISTRCDESMUS ?
CEKTRIC DIATOM
CRtCIGEMA FENESTRATA
CRLCIGENIA TETRAPEDIA
CRYPTCMCNAS
CRYPTCfCKAS EROS*
CYCLOTELLA MENENGHINIANA
CACTYLOCGCCOPSIS
ELAKATCTHRIX GELATINCSA
EUGLENA *1
EUGLENA ACUS
EOGLENA ACUS ?
FLAGELLATE 91
GCFPHONEfA CLIVACEUM
LEPCCINCLIS
LEPOCINCLIS FUSIFORMIS ?
MELCSIRA DISTANS
MELCSJRA GRANULATA
MERISHCFECIA TENUISSIMA
HCUGEOTIA
NAVICULA VULPINA
NITZSCHIA
NMZSCHIA «1
COCYSTIS
OSCILLATCRIA
OSCILLATORIA LIHNETICA
PHACUS ACUMINATUS
PTEROMONAS ANGULCSA
SCENEDESMUS DIMORPHUS
SCENEDESMUS INTERMEOIUS
V. 8ICALCATUS
FORM
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
FIL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
CEL
COL
CCL
ALGAL
UNITS
S XC PER ML
1
5
2
4
11.1
2.8
2.8
27.8
8.3
8.3
11.1
8.3
X
157
X
39
39
X
392
X
117
X
117
X
157
117
ALGAL
UNITS
S 3CC PER ML
1
3
•t
25.4
1.7
26.3
2.6
2.6
0.9
0.9
2.6
917
X
X
63
X
949
S5
X
X
X
X
X
X
S5
X
X
X
32
X
X
32
95
-------
ATCHAFALAYA
STCRET MIM8ER: E009000 CONTINUED
11 19 74
12 IB 75
vo
TAXA
SCENEOESMUS OUADRICAUQA
SCENEDESfrUS RACIEORSKII
F. GRANULATUS
SKELETCNEMA POTAMOS
STEPHANCCISCUS
SLRIRELLA
SURIRELLA LINEAR IS 7
SYNECRA
TETRAEORON MINIMUM
TRAOELOMCNAS HISPICA
TRACHELCWCKAS SCHAUINSLANDII
TRACHELCMCNAS VERRUCCSA
TRACHELCHCNAS VOLVCCINA
ALGAL
UMTS
ALGAL
UNITS
FORM |S 1C PER ML IS *C PER ML
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
x 1
1
2.81 39 |
1 15
2.81 39
I
3| 13.9| 196
2
2.6| 95
5.3
28.1
0.9
190
X
X
1012
32
X
X
X
TCTAL
1409
3607
-------
ATCHAFALAYA
STCRET NUMBER: EC110CO
NYGAARO TROPHIC STATE INDICES
DATE II 19 74 01 23 75 06 21 75
MYXOPHYCEAN
CHLORCPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
01/0 E
01/0 E
0.50 E
1.00 E
05/0 E
03/0 E
04/0 E
0.29 E
1.00 E
14/0 E
04/0 E
02/0 E
1.67 E
0,50 E
17/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 11 19 74 01 23 75 06 21 75
GENUS
SPECIES
01
00
07
03
07
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 11 19 74 01 23 75 06 21 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES CCMPOSITEC
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
1*6 AN NUMBER OF INDIVIDUALS/TAX A
NUMBER/ML OP MOST ABUNDANT TAXCN
H
S
M
H
0
N
J
L
K
1.52
7.00
1.00
2.81
357.20
235.00
0.54
33.57
94.00
3.28
28.00
1.00
4.81
6540.32
1994.00
0.68
71.21
518.00
2.28
23.00
1.00
4.52
3347. C4
1468.00
0.50
63.83
778.00
-------
ATCHAFALAYA
STCRET NUMBER: EO11000
CONTINUED
vo
in
TAXA
ANABAENA
*NA6AENA fl
ANABAENA *2
ANKI STRODESMUS ?
ANKISTFCOESMUS F»LCATUS
V. MIRAB1LIS
ASTERICNELLA FORMOSA
CARTER IA
ChLAMYDQMONAS
CLCSTERIUM
CCSCINCOISCUS RCTHII
V. SUBSALSA
CRUCIGEMA FENESTRATA
CRYPTOMONAS
CRYPTCMCNAS EROS A
CRYPTOMCNAS MARSSCNII
CYCLOTELLA
CYPBELLA
CAC1YLOCCCCOPSIS
DIATOMA VULGARE
EUGLENA
EUGLENA 01
EUGLENA ACUS
EUhOTIA
FLAGELLATE
FLAGELLATE «2
GLENODINIUP GCLLATUP
OCPPHONEMA
GYMNOOIMUM
GYMNCDINIUM ALBULU"!
CYMNODINIUM OROINATUM
LEfCCINCLIS
11 19 74
01 23 75
06 21 75
1 ALGAL ALGAL
UMTS UNITS
FORM IS *C PER ML S *C PER ML
F1L I I I ||
FIL | II
ML I ||
CEL
CEL 5
CEL X
CEL |4
CEL 1
CEL 1
1
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
11
X
3
1
1
4.0| 80
1
8. 0| 159
16.01 319
1
1
1
1 X
1
10.01 199
4.01 ec
1 x
1
2.01 40
1
1
1 x
1
4.0) 80
1
6.0] 120
1
1 X
1
1 x
1 x
1
ALGAL
UNITS
S *C PER ML
4
5
1
2.0
2.0
4.1
4.1
X
X
30
30
X
60
X
X
60
X
X
-------
ATCHAFALAYA
STCRET NLHBER: E011000
CONTINUED
vo
11 19 74
01 23 75
06 21 75
TAXA
LUNATE CELLED CCLONY
LYNGBYA
»»ELCSIR*
HELGSIRA DISTANS
KELOSIRA GRANULATA
KELCSIPA GRANULATA
V. ANGLSTISSIHA
PICROCYSTIS
NITZSCHIA
NITZSCHIA HI
NITZSCHIA FILIFOPMIS
OCHRCHCNAS
OOCVSTIS
CSCILLATCRIA
OSCILLATCRIA LIHNETICA
PENNATE
PHACLS il
PHACUS ANOMALUS
PHACUS HELIKCIDES
PHACLS MEGALOPSIS
PHACLS SUECICUS
PTEROMCNAS ANGULCSA
SCENEOESMUS BICAUOATUS
SCENEOESHUS BIJUGA
F. IRREGULARIS
SCENEDESMUS DIMORPHUS
SCENEDESM1.S INTER»1EDIUS
V. BICALDATUS
SCENEDESKUS PROTUBERANS
SCENEOESMLS QUADRICAUDA
SK.ELETONEMA POT AMOS
SPHAERCCYSTIS ? SCHRCETERI
FORM
COL
FIL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
COL
CCL
COL
CCL
CEL
COL
s
1
zc
40.0
ALGAL
UNITS
PER PL
94
X
X
s
2
*c
4.0
10.0
2.0
26.0
4.0
ALGAL
UNITS
PER ML
80
X
X
X
199
40
X
518
80
X
X
S
2
3
*C
53.0
12.3
4.1
2.0
ALGAL
UMTS
PER ML
778
X
X
180
60
30
X
X
X
X
.
-------
V0
ATCHAFALAYA
STCRET NLHBER: EC110CO CONTINUED
11 19 74
01 23 75
06 21 75
TAXA
STEPHANODISCUS
SYNEORA ULNA
TETBAECRCN TRIGCMJM
V. GPACILE
TETPASTRUM STAUROGENIAEFORME
TRACHELOfCNAS
TRACHELOHONAS HISPIDA
TRACeELCKCNAS INTERMEDIA
TRACHELCMCNAS VOLVOCINA
TOTAL
1
FORM 1
CEL 1
CEL
CEL
COL
CEL
CEL
CEL
CEL
s tc
2140.01
1
1
1
I
3120.0
1
|
1
ALGAL
UNITS
PER ML
94 1
47
S
1
1C
ALGAL 1
UNITS ]
PER ML 1
X
X
X
s
1
ALGAL
UMTS
1C PER ML
1
1
1
1
1
1
2.01 30
1
14.31 21G
235
1994
1468
-------
ATCHAFALAYA
STCRET NUMBERS E011000 CONTINUED
NYGAARD TROPHIC STATE INDICES
DATE 12 15 75
MYXOPHYCEAN
CHLORGPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
3.00
9.00
0.33
2.00
22.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 12 15 75
ID
00
GENUS
SPECIES
10
03
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TCTAL NUMBER GF INDIVIDUALS/ML
EVENESS COMPONENT
PEAN NUMBER OF INDIVIOUALS/TAXA
NUMBER/ML OF MOST ABUNDANT TAXON
12 15 75
H
S
H
;H
D
N
J
L
K
3.19
28.00
1.00
4.81
531*. 5*
1666.00
0.66
59.50
378.00
-------
ATCHAFALAYA
STCRET NUMBER: EOIIOOO CONTINUED
12 15 75
VD
VO
TAXA
ANABAENA
ANABAENA il
AKABAENA f2
AN* I STRODESMUS ?
AMCISTRODESHUS FALCATUS
V. MIRABILIS
ASIERICNELLA FORMOSA
CAPTERIA
CHLAHYDCMONAS
CLCSTERIUM
CCSCIMCDISCUS RCTHII
V. SUBSALSA
CRUCICENIA FENESTRATA
CRYFTOMCKAS
CRYPTOHCNAS EROSA
CRYPTOfCNAS HARSSONII
CYCLCTELLA
CYfBELLA
CACTYLCCCCCOPSIS
OIATCMA VULGARE
EUGLENA
EUGLENA HI
EUGLENA ACUS
EUNCTIA
FLAGELLATE
FLAGELLATE *2
GLEfvCOIMUP OCLLATUH
CCfPHONEHA
GYPNCOINIUM
GYMNOOINIUK ALBULUM
GYfNOOINIUM ORDINATUM
LEFCCINCLIS
1
FORM |
FIL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
5
*C
13.6
2.3
2.3
ALGAL
UNITS
PER ML
X
227
38
X
38
X
X
X
X
X
-------
ATCHAFALAYA
STORET NUMBER: EC110CO
CONTINUED
O
o
12 15 75
TAXA
LUKATE CELLED COLONY
LYNGBYA
MELCSIRA
PELOSIRA DISTANS
MELOSIRA GRANULATA
PELGSIRA GRANULATA
V. ANGISTISSIMA
HICROCYSTIS
MTZSCHIA
NITZSCHIA (HI
MTZSCHIA FILIFORMIS
CCHfiCMCNAS
OCCYSTIS
CSCILLATORIA
CSCILLATCPIA LIHNETICA
PEKNATE
PMCUS «1
PHACLS ANCKALUS
PHACUS hELIKOIDES
PHACUS MEGALCPSIS
PHACLS SL'ECICUS
FTEROMONAS ANGULCSA
SCEKEOESHUS BICAOCATUS
SCENEOESMUS 8IJLGA
F. IRREGULARIS
SCENEOESHtS OIMCRPHUS
SCENEDESHUS INTERMEOIUS
V. BICALCATUS
SCENEDESPUS PROTU8ERANS
SCENEDES^OS QUAORICAUOA
SKELETCNEHA POTAMGS
SPHAEROCYSTIS ? SCHRCETERI
FCRM
COL
FIL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
COL
CCL
COL
CCL
CCL
CEL
CCL
S
2
A
3
«C
4.6
18.2
2.3
11.3
4.6
2.3
2.3
11.3
ALGAL
UNITS
PER ML
76
303
38
189
76
X
X
X
X
X
X
38
38
169
1 X
-------
ATCHAFALAYA
STCRET NUMBER: E011000
CONTINUED
12 15 75
TAXA
STEPHANODISCUS
SYNEORA ULNA
TETRAECRCN TRtGQMJM
V. GRACILE
TETRASTRUN STAURCGENIAEFORKE
TRACHELCFCKAS
TRAChELOMONAS HISPIDA
TRACHELCMCNAS INTERMEDIA
TRACHELCMONAS VOLVGCINA
FORM
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
ALGAL
UNITS
S *C PER HL
1122.71 378
2.3
38
TOTAL
1666
-------
ATCnAFALAYA
STORET DUMBER: E027000
NYGAARD TROPHIC STATE INDICES
DATE 01 16 75 06 13 75 12 12 75
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
OIATCH
COMPOUND
0/0 0
01/0 E
0/01 ?
0.80 E
05/0 E
4.00 e
8.00 e
0.42 E
0.71 E
22.0 £
0/01 0
5.00 E
1.40 E
1.50 E
18.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 01 16 75 06 13 75 12 12 75
O
ro
GENUS
SPECIES
04
00
05
00
13
03
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 01 16 75 06 13 75 12 12 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
fEAN NUMBER CF INCIVIDUALS/TAXA
NUMBER/ML tlF MOST ABUNDANT TAXOK
H
S
H
CH
C
N
J
L
K
2.13
12.00
1.00
3. 58
553.80
260.00
0.59
21.67
104.00
3.39
33.00
1.00
5.04
5000.25
1475.00
0.67
44.70
241.00
3.10
28.00
l.OO
4.81
29834.40
9624.00
0.64
343.71
2156.00
-------
ATCHAFALAYA
STORET NUMBER: E027000 CQNTINUEC
01 16 75
06 13 75
12 12 75
O
CO
TAXA
AONANThES LANCEOLATA
V. OUBIA
ACTINASTRUM
ANABAENA
ANKI STRODESMUS FALCATUS
AMUSTRCOESHUS FALCATUS
V. KIRABILIS
ASTER1CNELLA
ASTERICNELLA FORMOSA
CENTRIC DIATOM
CHLAMYDCMONAS
CLCSTERIUM
COELASTRUH MICROPORUH
COSC1NCDISCUS ROTHII
V. SUBSALSA
CRUCIGENIA QUAORATA
CRUCIGENIA TETRAPECIA
CRVPTOKCNAS
CRYPTCMCNAS EROSA
CYCLCTELLA
CYCLOTFLLA MENENGHIMANA
CACTYLOCCCCOPS1S
EUGLENA
EUGLENA *2
EUGLENA ACUS
EUGLENA CXYURIS
EUGLENA TRIPTERIS
EUNOTIA
EUNOTIA CURVATA
FLAGELLATE «1
FLAGELLATES
GOt-PHCNEFA OLI VACUUM
FORM
CEL
COL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
ALGAL
UNITS
S *C PER ML
5
1
A
10.0
40.0
10.0
26
X
104
26
X
X
X
ALGAL
UNITS
S *C PER ML
5
2
2.3
2.3
14.0
11.7
X
X
X
X
X
34
34
X
X
206
X
X
X
X
172
ALGAL
UNITS
S «C PER ML
5
3
1
17.5
7.6
18.0
2.7
4J22.4J
1
1683
736
x
x
1736
X
263
X
.
2156
-------
ATCHAFALAYA
STCRET NUMBER: eoarooo
CONTINUED
01 16 75
06 13 75
12 12 75
TAXA
GYPNODINIUH ALBULUM
KIRCHNERIELLA
LEPCCINCLIS ACUTA
LYKGBYA
MELOSIRA
PELOSIRA OISTANS
MELOSIRA GRANULATA
KELCSIRA GRANULATA
V. ANGtSTlSSlMA
MELCSIRA VARIANS
MERISHCPEOIA TENUISSIMA
HESCSTIGMA VIRIDIS
NAVICULA
NITZSCHIA
NITZSCHIA ACICULARIS
NITZSCHIA ACTINASTROIOES
NITZSCHIA HQLSATICA
NITZSCHIA SPP.
PEhNATE
PMCCS CAUCATUS
PHACLS LCNGICAUDA
PHACUS PYRUM
SCENEDESWJS BICAUOATUS
SCENEDESMUS BIJUGA
SCENEOESMliS OIMORPHUS
SCEKEDESMOS QUACRICAUOA
SKELETCNEMA POTA«nS
SPERHATCZCQPSIS
STAtRONEIS
STEPHANCCISCUS
SYNEDRA ACUS
TETPASTRUM STAUROGEMAEFORME
TRACHELOMONAS PULCHERRIMA
TRAChELCMOKAS SPP.
TREUBAPIA
FORM
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CCL
COL
CCL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
ALGAL
UNITS
S %C PER ML
3
2
20.0
20.0
X
X
52
X
52
ALGAL
UMTS
S *C PER ML
1
3
K
1
14.0
14.0
16.3
2.3
2.3
2.3
2.3
2.3
7.0
X
206
206
241
34
34
X
X
X
X
34
X
34
34
X
1C3
X
7.01 103
1
ALGAL
UNITS
S 1C PER ML
2
3.8
4.9
0.6
1.1
14.8
0.6
2.2
2.2
0.6
1. 1
X
X
368
473
53
X
105
1420
53
X
X
X
210
210
53
105
X
TOTAL
260
1475
9624
-------
ATCHAFALAYA
STORE! NUMBER: E028000
NYGAARD TROPHIC STATE INDICES
DATE 11 20 74 04 16 75 06 13 75
MYXGPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
OIATCM
COMPOUND
4.00 E
12.0 E
0/16 ?
0.80 E
20.0 E
02/0 E
01/0 E
0.67 E
0.60 E
08/0 E
2.00 E
3.00 E
0.40 E
1.33 E
11.0 E
PALMER'S CRGANIC POLLUTION INDICES
DATE 11 20 74 04 16 75 06 13 75
O
cn
GENUS
SPECIES
11
04
00
00
00
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
fEAN NUMBER CF INDIVIDUALS/TAXA
NUMBER/ML OF POST ABUNDANT TAXON
11 20 74 04 16 75 06 13 75
H
S
M
;H
c
N
J
L
K
3.61
28.00
1.00
4.81
2613.64
724.00
0.75
25.86
149.00
2.06
16.00
1.00
4.00
1C79.44
524.00
0.52
32.75
218.00
2.16
18.00
1.00
4.17
622.08
288.00
C.52
16. CO
108.00
-------
ATCHAFALAYA
STCRET NUMBER: E028000
CONTINUED
O
cn
TAXA
ACTIKASTRUM
ASTERICNELLA FORMOSA
CHLORELLA
CLCSTEPIUM
COCCCNEIS PLACENTULA
COELASTRUM HICRCPORUM
CRYPTOMGNAS EROSA
CRYPTCMCNAS MARSSONII
CRYFTOMOKAS REFLEXA
CRYPTCMCNAS SPP.
CYCLOTELLA
DACTYLCCCCCOPSIS
DICTYOSPHAERIUM
EUGLENA *1
EUGLENA «2
FLAGELLATE #1
GCPPHOItEPA
HAMZSCHIA
KIRCfcNERIELLA
LYNGBYA
HELCSIRA OISTANS
fELOSIPA GRANULATA
HELCSIRA GRANULATA
V. ANGUSTISSIMA
»
-------
ATCHAFALAYA
STCRET MjMBER: €028000
TAXA
PECIASTRLiM DUPLEX
PEKNATE (HI
PENKATE #2
PEKNATE *3
PESNATES
PHACLS
PHACLS fEGALCPSIS
PLEtftCSIGMA DELICATULUC
PTERC^CNAS ANGULCSA
SCENEDESMUS
SCEKECESI'bS
SCENEDESMUS
SCEhEDESCUS
SCENEOESMUS
BIJUGA
OIMCRPHUS
DIMCRPHOS ?
PROTUHERANS
CUACRICAUDA
SETIGERA
POTAHOS
CONTINUED
SCENEDESftS
SCHPOEOERIA
SKELETCNEHA
STEPHANCCISCUS
SYNECRA
TETRAECRCN MINIMUM
TETPASTfitH STAURCGEMAEFCRME
11 20 74
04 16 75
06 13 75
FORM
COL
C£L
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CCL
COL
COL
COL
COL
CEL
CEL
C£L
CEL
CEL
ALGAL
UNITS
S *C PER ML
3.5
3.5
6.9
i
1
X
X
25
25
X
50
X
X
X
CCL {4110.41 75
ALGAL
UNITS
S 1C PER ML
1
5
2
41.6
16.6
25.0
X
X
X
218
X
X
87
X
131
ALGAL
UNITS
S «C PER PL
4
3
12.5
25.0
36
X
72
TCTAL
724
524
288
-------
ATCHAFALAYA
STCPFT NUMBER: E030000
NYGAARD TROPHIC STATE INDICES
CATE 12 12 75
MYXGPKYCEAN
CHLCRCPHYCEAN
EUGLENOPHYTE
CIATCM
COMPOUND
2.00 E
15.0 E
0.24 E
1.50 E
27.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 12 12 75
O
00
GENUS
SPECIES
06
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 12 12 75
AVERAGE DIVERSITY H 2.82
NUMBER OF TAXA S 37.00
NUMBER CF SAMPLES COMPOSITED M 1.00
MAXIMUM DIVERSITY FAXH 5.21
TOTAL DIVERSITY D 5434.14
TOTAL J^UMBER OF INDIVIDUALS/ML N 1927.00
EVENESS COMPONENT J 0.54
fEAN NUMBER OF INCIVIOUALS/TAXA L 52.08
NLPBER/ML OF HOST ABUNDANT TAXCN K 535.00
-------
ATCHAFALAYA
STGRET NUMBER: E030000
CONTINUED
12 12 75
O
\o
TAXA
ACTINASTRUM
ANABAENA
ANKISTPCDESMUS
ANKISTRODESMUS CCMVOLUTUS
ANKISTPGOESMUS FALCA7US
V. MIRABILIS
ASTERIONELLA FORMOSA
CLCSTEPIUM
CRYPTCMONAS EROSA
CRYFTOMCNAS REFLEXA
CYCLCTELLA MENENGHIMANA
CICTYOSPHAERIUM
EUCLENA HI
EUGLENA »2
FLAGELLATE »2
FLAGELLATE 13
FLAGELLATES
FRANCEIA CROESCt-ERl
KIRCHNERIELLA
^ELCSIRA OISTANS
fELCSIRA GRANULATA
HELCSIRA GRANULATA
V. ANGLSTISSIMA
HIC»ACTINIUM PUSILLUM
NITZSCHU
NITZSCHIA ft
CCCYSTIS
CSCULATCRIA
PENNATE
PHACLS CAtCATUS
PHACUS MEGALOPSIS
SCENECESMUS OIMUPPHUS
FORM
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEl
CEL
FIL
CEL
CEL
CEL
COL
S
4
3
2
XC
5.6
16.7
5.6
25.9
3.7
1.9
1.9
3.7
ALGAL
UNITS
PER ML
X
X
X
X
X
X
X
X
X
107
X
X
X
X
X
321
X
107
500
71
X
36
X
X
X
X
36
X
X
1 71
-------
JTCHAFALAYA
STCPET KUMBERi EC30000 CONTINUED
TAX*
SCENEDESMUS OVALTERNUS ?
SCENEOESMIS (JUADRICAUCA
SKELETCNEHA POTAMOS
STEPHANCCISCUS
TETRASTRUM
TETRASTRUH ELEGANS
TETFASTRUM STAURCGEMAEFORME
12 12 75
FORM
COL
CGL
CEL
CEL
COL
COL
COL
1
1
IS
1 1
1 1
11127
1 1 1
151 5
1 1
1 1
*C
1
1
.81
.91
.61
1
1
ALGAL
UNITS
PER ML
X
X
535
36
107
X
X
TOTAL
1927
-------
ATCHAFALAYA
STCRE7 NUMBER: E031000
NYGAARO TROPHIC STATE INDICES
DATE 11 20 74 06 13 75
MYXCPHYCEAN
CHLORGPHYCEAN
EUGLENOPHYTE
CIATCM
COMPOUND
3.00 E
3.00 E
0,17 ?
1.00 E
10.0 E
2.00 E
11.0 E
0.31 E
1.75 E
24.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 11 20 74 06 13 75
GENUS
SPECIES
00
00
01
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
AVERAGE DIVERSITY
DUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
DATE
H
S
M
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY D
TOTAL NUMBER OF INDIVIDUALS/ML N
EVENESS COMPONENT J
fEAN NUCBER OF INDIVICJALS/TAXA L
NUMBER/ML OF MOST ABUNDANT TAXCN K
11 20 74 06 13 75
2.26
15.00
1.00
3.91
458.78
203.00
0.58
13.53
67.00
3.07
33.00
1.00
5.04
3073.07
1001.00
0.61
30.33
250.00
-------
ATCHAFALAYA
STORET NUMBER: E031000
CONTINUED
II 20 74
06 13 75
TAXA
ACHNANThES
ACTINASTRUM
ACTINASTRUK HANT2SCHII
V. FLUVtATILE
ANAEAENA
ANKISTRODESMUS
ANKISTRGDESMUS FALCATUS
V. PIRABILIS
ASTERICNELLA FORMOSA
CENTRIC DIATOM
£ CENTRIC DIATOMS
ro CHLOROPHYTAN FILAMENT
CHfYSCCCCCUS ?
CLCSTERIUM
CLCSTERIUM ?
COCCCNEIS
COELASTRUM MICROPORUM
CGSCINCCISCUS ROTHII
V. SUBSALSA
CRUCIGENIA CRUCIFERA
CRUCIGEMA TETRAPECIA
CRYFTGMCNAS EROSA
CYANOPHYTAN FILAMENT
CYCLCTELLA PENENGHIMANA
CACTYLOCOCCOPSIS
EUCLEiNA
EUGLENA TRIPTERIS
EUNOTIA
GCI'FHOKEMa
MELOSIRA
KELGSIRA «1
MEICSIRA CISTANS
FORM
CEL
CEL
CEL
FIL
CEL
CFL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CCL
COL
COL
COL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
2
3
%C
16.7
33.0
ALGAL
UMTS
PER ML
X
34
X
X
X
X
67
X
X
X
S
5
1
3
*C
10.7
3.6
3.6
3.6
25.0
17.8
ALGAL
UNITS
PER ML
X
X
X
X
107
36
36
X
36
X
X
X
X
X
X
X
X
X
X
250
178
-------
ATCHAFALAYA
STCRET NUMBER: EC31000
CONTINUED
11 20 74
06 13 75
TAXA
HELCSIPA GRAHULATA
V. ANGLS1ISSIMA
CSCIILATCRIA
PEDIASTRUM BIRACIATUf
FEC1ASTRUM DUPLEX
V. CLATNUTUM
PEKNATE
FENKATE il
PHACLS
SCENEOESMUS OENTICULATUS
SCENEOtSMUS DIMCPPHUS
SCENEOESHUS SPP.
SCMIOEOERIA SETIGERA
SKELETCNEHA POTAMOS
SPERMATOZOQPSIS
TETRASTRUH ELEGANS
TRACHELCPCNAS INTERMEDIA
FCRM
CEL
FtL
CCL
COL
ALGAL I ALGAL
UNITS t UNITS
S XC PER ML IS *C PER ML
1
1
1116.7
CEL 1
CEL 14
CEL
COL
COL
COL
CEL
CEL
CEL
COL
CEL
5
16.7
16.7
1
14110.7
34
X
34
X
34
2
3.6
3.6
107
36
X
3fc
X
X
1 X
3.61 36
1
14.3| 143
1 X
1 X
1 X
TOTAL
203
1001
-------
ATCHAFALAYA
STCRET NUMBER: EC32000
NYGAARO TROPHIC STATE INDICES
DATE 03 19 74 01 20 75 04 16 75
MYXOPHYCEAN
CHLORCPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
0/0 0
0/0 0
0/0 ?
0/0 ?
0/0 0
06/0 E
03/0 E
0/09 ?
0.83 E
14/0 E
0.50 E
1.50 E
0/04 ?
1.20 E
5.00 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 03 19 74 01 20 75 04 16 75
GENUS
SPECIES
00
CO
12
04
07
02
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 03 19 74 01 20 75 04 16 75
AVERAGE DIVERSITY H
NUMBER OF TAXA $
NUMBER CF SAMPLES CCMPOSITEC M
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY 0
TOTAL NUMBER OF INDIVIDUALS/ML N
EVENESS COMPONENT J
fEAN NUMBER CF INDIVIDUALS/TAXA I
NUMBER/ML OF MOST ABUNDANT TAXON K
0.00
0.00
1.00
0.00
0.00
o.oo
0.00
0.00
0.00
3.25
25.00
1.00
4.64
5908.50
1818.00
0.70
72.72
445.00
3.03
21.00
1.00
4.39
2963.34
978.00
0.69
46.57
235.00
-------
ATCHAFALAYA
STCRET NUMBER: EC32000 CONTINUED
03 19 7*
01 20 75
16 75
cn
TAXA
ACHNANTHES
ACTINASTRUM
ANABAENA
AMCISTPODESHUS FALCATUS
ANKISTRCDESMUS FALCATUS
V. MIRABILIS
ASTERICNELLA FORMOSA
ASTERICNELLA FORKOSA
V. GRAC ILL IMA
CAPTERIA
CENTRIC DIATOM
CENTRIC CIATOMS
CHLAMYOCHCNAS
CHROOMCNAS
CLCSTEBIUM
CLGSTERIUM *1
CLCSTERIUM *2
CCCCCIC CHLCROPHYTAN
COELASTRUM MICROPORUM
COSCINCOISCUS RGTHII
V. SUBSALSA
CRUCIGENIA TETRAPEOIA
CRYFTOMCNAS
CRYPTOHCNAS EROSA
CRYPTOMCNAS MARSSONII
CRYFTOMCNAS SPP.
CYANOPHVTAN FILAMENT
CYCLOTELLA
CYCLCTELLA fENENGHIMANA
CYMBELLA
CACTYLCCCCCOPSIS
DICTYOSPHAERIUM
FORM
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
COL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
COL
«
ALGAL
UNITS
S XC PER ML
ALGAL
UNITS
S *C PER PL
3
1
15.1
15.1
3.8
7.5
X
X
274
X
274
X
X
69
137
ALGAL
UNITS
S *C PER ML
4
4.0
24.0
12.0
X
X-
X
39
235
x
x
rt
x
x
x
117
x
-------
ATCHAFALAYA
STCRET NUMBER: E032000
CONTINUED
03 19 74
01 20 75
04 16 75
TAXA
ELAKATCTHRIX GELATINOSA
EUGLENA II
EUGLENA CXYURIS
EUGLENA SPP.
EUGLENA TRIPTERIS
FLAGELLATE «1
FLAGELLATE 12
FLAGELLATE §3
FLAGELLATES
FRAGILARU CROTONENSIS
GCKPHONEMA
GYKNQDINIUM ALBULUH
GYRCSIGMA
LEFCCINCLIS SPP.
LYNGBYA
fALLCMCNAS
KASTOGLGIA BRAUNII
fELCSIRA #i
HELCSIRA DISTANS
MELCSIRA GRANJLATA
»*ELCSIP* GRANULATA
V. ANGLSTISSIMA
CELCSIRA VARIANS
HICRCCYSTIS
KICROCYSTIS INCERTA
NAVICULA
NITZSCHIA
NITZSCHIA *1
MTZSCHIA »2
MTZSCHIA ACICULARIS
MTZSChIA ANGUSTATA
NITZSCHIA PALEA
FORM
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CCL
C^L
CEL
CEL
CEL
CEL
CEL
CEL
S
*C
ALGAL
UNITS
PER ML
S
2
4
*C
24.5
1.9
11.3
3.8
ALGAL
UNITS
PER ML
445
34
206
X
69
X
X
X
S
5
3
2
XC
8.0
16.1
8.0
16.1
ALGAL
UNITS
PER ML
X
78
157
78
157
-------
ATCHAFALAYA
STORE! NUMBER: E032000
CONTINUED
03 19 74
01 20 75
04 16 75
TAXA
MUSCHIA REVERSA ?
NITZSCHIA SPP.
COCYSTIS CITRIFOPMIS
CSCILLATQRIA
CSCILLATORIA SPLENOICA
PAIKELLCIG CHLAKYDOMCNAS
PECIASTRLH TETRAS
PENMATE
PENMATE il
PENMATE *2
PHACLS PEGALOPSIS
PHCRMIDIUM
PLANCTCNEMA
PTERCMCNAS
RAFHIDICPSIS
RIVULARIA
SCENEDESKUS ABUNCANS
SCENEDESMUS BIJUGA
SCENEDESHbS DIMOPPHUS
SCENEDESMUS OIMORPHtS ?
SCEN'EOESNUS INTERMEDIUS
SCENEDESMUS PROTU8ERANS
SCENEDESMtS QUADRICAIOA
SChROEOERIA SET1GERA
SKELETCNEMA PQTAMOS
STEPHANODISCUS
STEPHANCDISCUS ASTRAEA
StRIRELLA LINEARIS
SYNECRA ULNA
TE1FASTRUM STAURCGEMAEFORME
TRACHfLCWONAS SPP.
TOTAL
FORM
CEL
CEL
CEL
FIL
FIL
CEL
COL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
FIL
FIL
COL
COL
COL
CCL
COL
COL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
S
xc
ALGAL
UNITS
PER ML
S
5
XC
3.8
3.8
1.9
3.8
3.8
ALGAL
UNITS
PER ML
69
69
34
X
69
65
X
X
S
*c
4.0
4.0
4.0
1
ALGAL
UMTS
PER ML
39
X
39
39
1816
978
-------
ATCHAFALAYA
STCRET NUMBER: E032000
CONTINUED
NYGAARD TROPHIC STATE INDICES
DATE 06 13 75 12 12 75 12 18 75
MYXOPHYCEAN 2.00 E 3.00 E 3.00 E
CHLOROPHYCEAN 5.00 E 9.00 E 8.00 E
EUGLENOPHYTE 0.14 ? 0.58 E O.C9 7
DIATCM 2.00 E 0.36 E 1.20 E
COMPOUND 12.0 E 23.0 E 18.0 E
PALMER'S CRGANIC POLLUTION INDICES
DATE 06 13 75 12 12 75 12 18 75
00
GENUS
SPECIES
03
03
14
09
10
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 06 13 75 12 12 75 12 16 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
*EAN NUK.BER CF INOI VI DUALS/TAX A
NUMBER/^L OF MOST ABUNDANT TAXON
H
S
M
MAXH
C
N
J
L
K.
2.68
16.00
1.00
4.00
2146.68
801.00
0.67
50.06
229.00
3.92
42.00
1.00
5.39
11466.00
2925.00
C. 73
69.64
630.00
2.90
28.00
1.00
4.81
11933.50
4115.00
0.60
146.96
1372.00
-------
ATCHAFALAYA
STCRET NUMBER: £032000
CONTINUED
TAXA
ACHNANThES
ACTItiASTRUM
ANABAENA
ANKISTPQOESHUS FALCATUS
ANKISTRODESffUS FALCATUS
V. MIRABUIS
ASTERICNELLA FORMOSA
ASTERtCNELLA FORMOSA
V. GRAC ILL IMA
CARTER!*
CENTRIC DIATOM
CENTRIC DIATOMS
CHLAPYDCMQNAS
CHROOHCNAS
CLCSTEPIUM
CLCSTERIUM «l
CLCSTERIUH §2
CCCCOIC CHLOROPHYTAN
CQELASTRUM MICROPORUK
CCSCINCOISCUS ROTHII
V. SUESALSA
CRUCIGEMA TETRAPECIA
CRVFTCHCKAS
CRYPTCMCNAS EROSA
CRYPTQMCKAS MARSSONII
CRYPTCf*CNAS SPP.
CYANOPHYTAN FILAH6NT
CYCLCTELLA
CYCLCTELLA fENENGHINIANA
CYMBELLA
CACTYLCCCCCCPSIS
CICTYOSPHAERIUM
06 13 75
12 12 75
12 18 75
1
FORM
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
COL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CCL
ALGAL
UNITS
S XC PER ML
4
2
17.9
14.2
X
X
143
114
X
X
ALGAL
UNITS
S 1C PER PL
1.2
6.4
1.2
X
34
X
X
X
X
187
34
ALGAL
UNITS
S SIC PER ML
1
4
X
X
33.3
1.1
3.3
10.0
X
1372
46
X
137
X
412
X
-------
ATCHAFALAfA
STORET NUMBER: £032000
CONTINUED
06 13 75
12 12 75
12 18 75
TAXA
ELAKATOTHRIX GELATINOSA
EUGLENA II
EUGLENA CXYURIS
EUGLENA SPP.
EUGLENA TRIPTERIS
FLAGELLATE 41
FLAGELLATE 12
FLAGELLATE *3
FLAGELLATES
FRAGILARIA CROTGNENSIS
GOPPHOHEPA
GYPNOOINIUM ALBULUM
GYRCSIGMA
LEPCCINCLIS SPP.
LYKGBYA
PALLCMCNAS
MASTCGLCIA BRAUNII
HEIOSIRA «L
KELCSIRA OISTANS
MELOSI«A GRANJLATA
fELOSIRf GRANULATA
V. ANGLSTISSIMA
**ELCSIRA VARIANS
MICRCCYSTIS
HICROCYSTIS INCERTA
NAVICULA
NITZSCHIA
NITZSCHIA HI
NITZSCHIA H2
NITZSCHIA ACICULARIS
NITZSCHIA ANGUSTATA
MTZSCHIA PALEA
FORM
COL
CEL
CEL
CEL
CEL
CEL
CEL
CtL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
COL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
5
1
zc
14.2
28.6
ALGAL
UNITS
PER ML
X
114
229
X
S
3
I
2
«C
1.2
4.1
1.7
2.3
21.5
7.0
3.5
ALGAL
UMTS
PER ML
34
X
119
X
X
X
X
51
X
66
X
X
63C
204
X
K
X
102
S
2
3
1C
4.4
24.4
6.7
1.1
ALGAL
UNITS
PER HL
X
183
X
X
1006
274
X
46
-------
ATCHAFALAYA
STCRET NUMBER: E032000
CONTINUED
06 13 15
12 12 75
12 18 75
ro
TAXA
MTZSCHIA REVERSA ?
MTZSCHIA SPP.
COCYSTIS CITRIFOPMIS
CSCILLATORIA
CSC1LLATORIA SPLENDICA
PALfELLCIC CHLAPYOGHONAS
PECIASTRUM TETRAS
PENMATE
PEKNATE *1
PENNATE «2
PHACUS fEGALGPSIS
PHCRMIDIUM
PLANCTCNEHA
PTERCMCKAS
RAPHIDICPSIS
RIVULARU
SCENEDESMLS ABUNCANS
SCENEDESMtS BIJUGA
SCENECESMUS OIHCPPHUS
SCENEDES^US DIMCPPHUS ?
SCENEDESPUS INTERMEDIUS
SCENEDES»«US PROTUBERANS
SCENEDESMtS QUADPICAUDA
SCHROEDERU SETICERA
SKELETCNEHA PCTAMCS
STEPHANQDISCUS
STEPHANCCISCUS ASTRAEA
SUK1RELLA L1NEARIS
SYNECRA ULNA
TETPASTRUM STAURCGEMAEFORME
TRACHELOfONAS SPP.
FORM
CEL
CEL
CEL
Fit
Fit
CEL
CCL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
FIL
FIL
CCL
COL
COL
COL
COL
COL
cct
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
S
3
ZC
3.6
3.6
3.6
14.2
ALGAL
UNITS
PER ML
X
29
29
29
X
114
S
Ti
5
XC
•\.
9.31
7.6
7.0
1.2
4.1
2.3
4.1
8.1
2.9
0.6
1.2
1.71
ALGAL
tNITS
PER ML
272
221
X
204
X
34
119
X
68
X
119
236
85
17
34
51
S
5
XC
3.3
3.3
4.4
2.2
2.2
ALGAL
UMTS
PER ML
X
X
137
X
137
183
91
X
X
91
TCTAl
801
2S25
4115
-------
ATCHAFALAYA
STCRET NUMBER: EC52000
NYGAARO TROPHIC STATE INDICES
DATE 11 21 7* 01 20 75 12 15 75
MYXOPHYCEAN
CHLQROPHYCEAN
EUGLENOPHYTE
• CIATQM
COMPOUND
01/0 E
01/0 E
2.50 E
1.00 E
09/0 E
04/0 E
03/0 E
0.14 ?
0.71 E
13/0 E
03/0 E
04/0 E
0.14 ?
0.58 E
15/0 E
ro
ro
PALMER'S ORGANIC POLLUTION INDICES
DATE II 21 74 01 20 75 12 15 75
GENUS
SPECIES
05
00
00
00
08
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES CCMPOSITEC
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INOIVIDUALS/ML
EVENESS COMPONENT
*EAN NUMBER CF INOIVIDUALS/TAXA
NOMBER/ML 0<= POST ABUNDANT TAXON
11 21 74 01 20 75 12 15 75
H
S
H
IH
D
N
J
L
K
1.36
14.00
1.00
3.81
497.76
366.00
0.36
26.14
203.00
1.94
22.00
1.00
4.46
211.46
109.00
0.43
4.95
43.00
3.41
38.00
1.00
5.25
5953.86
1746.00
0.65
45.95
295.00
-------
ATCHApALAYA
NUMBER: ecsaooo
CONTINUEC
11 21 74
01 20 75
12 15 75
00
TAXA
ACHNANThES
ANAfiAEM
ANKISTPODESHUS FALCATUS
V. MIRABILIS
ASTERICNELLA FORfGSA
ASTERICNELLA FORMOSA
V. GRACILLIMA
CAPTEKIA
CENTRIC DIATOMS
CHPOCHCNAS *1
CHfiOCMCKAS NORDSTF.OTII
CQCCONEIS .
CCSCINCOISCUS ROTHII
V. SUBSALSA
CRUCIGEMA APICULATA
CRYFTGKCNAS EROSA
CPYPTO*CN»S KARSSGNII
CRVPTOKCNAS REFLEXA
CYANOPhYTAN FILAMENT
CYCLOTELLA PENEKGH1MANA
CYCLOTELLA MICHIGANIANA
DACTYLCCCCCOPSIS
EUGLENA
EUGLENA «1
EUGLENA ACLS
EUGLENA GRACILIS
EUCLENCIC CYST
EUNOTIA CURVATA
FLAGELLATE
GCPPHONEMA
HALLCMCNAS ALPINA
ALGAL 1 ALGAL 1 ALGAL
| UNITS 1 UNITS 1 UNITS 1
FORM IS *C PER ML IS SSC PEP *L 1 S SC PEP ML |
CEL
FIL
CEL
CEL
CEL
CEL 1
CEL
CEL 1
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
1
33.3
11 XI
X
122
X
X
X
X
X
X
20.2 22 X
X
X
1 x
5 lo.ai ias
X
X
X
X
X
1 X
2116.91 295
9.2
3.1
1.5
3.1
10.8
161
X
X
X
X
54
.
27
X
54
X
188
X
-------
ATCHAFALAYA
STCRET NUMBER: E052000
CONTINUED
rva
11 21 74
01 20 75
12 15 75
TAXA
MELOSIRA
MELCSIRA CISTANS
HELOSIRA GRANULATA
PELCSIFA GRANULATA
V. ANGLSTISSIMA
MELCSIRA VARIANS
HESCSTIGMA VIRIDIS
MICPOCYSTIS INCERTA
NAVICULA
NAVICULA fl
NAVICULA §2
NITZSCHI* *1
MTZSCHI*
NITZSCHIA
NITZSCHIA
NITZSCHIA
NITZSCHIA
NITZSCHIA
*2
03
ACICULARIS
PARADCXA
SIGMOICEA
SPP.
OSCILLATORIA
CSCILLATORIA AMPHIBIA
OSCILLATCRIA LIPNETICA
PANOORINA MORUM
FECIASTRUH CUPLEX
PHACLS FLEURGNECTES
PLFUROSIGMA
PTERCMCNAS ANGULCSA
PYPROPHYTAN CYST
SCENEDESfUS
SCENEJESHLS
SCENEOESMLS
SKELETCNEMA
BIJUGA
OIMOBPHLS
DIMORPHLS
POTAHOS
STFPHAKODISCUS
FORM
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
FIL
COL
COL
CEL
CEL
CEL
CEL
COL
COL
CCL
CEL
CEL
S
3
2
*C
11.2
55.5
ALGAL
UMTS
PER ML
X
X
X
41
203
X
X
S
1
2
4
*C
39.4
20.2
20.2
ALGAL
UNITS
PER ML
X
X
43
X
X
22
X
X
22
X
X
X
S
4
1
3
XC
3.1
7.7
16.9
1.5
1.5
3.1
10.8
ALGAL
UNITS
PER ML
54
134
X
X
X
X
X
X
X
X
295
27
X
x
27
54
188
-------
AjCHAFALAYA
STORET NUMBERS E052000
CONTINUED
TAXA
STEPHANCDISCUS NIAGARAE
SURIRELLA OVATA
SYNECRA ULNA
TRACHELCHONAS VOLVOCINA
11 21
01 20 75
12 15 75
FORH
CEL
CEL
CEL
CEL
| ALGAL
| UNITS
IS *C PER ML
1 1 1
1 1 1
1 1 1
1 1 1
| ALGAL
| UNITS
IS
1 1
1 1
1 1
1 1
1C PER
1
1
1
1
ML
X
X
X
1
1
is xc
1 1
1 1
1 1
1 1
ALGAL
UNITS
PER ML
1 x
1
1
1
1
1
1
1
1
1
ro
01
TCTAL
366
1C9
-------
ATCHAFALAYA
STCRET NUMBER: E059000
NYGAARD TROPHIC STATE INDICES
OATE li 22 74 12 11 74 01 18 75
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPhYTE
OIATCM
COMPOUND
03/0 E
02/0 E
0/05 ?
1. 00 E
09/0 E
2.00 E
5.00 £
0/07 ?
0.57 E
11.0 E
01/0 E
02/0 E
0/C3 t
1.00 E
07/0 E
ro
o>
PALMER'S ORGANIC POLLUTION INDICES
GATE 11 22 74 12 11 74 01 18 75
GENUS
SPECIES
C8
00
06
04
00
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXh
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INOIVIDUALS/TAXA
NUMBER/ML CF MOST ABUNDANT TAXON
II 22 74 12 II 74 01 18 75
H
S
M
:h
0
N
J
L
K
2.50
14.00
1.00
3.81
880.00
352.00
0.66
25.14
88.00
3.07
22.00
1.00
4.46
3039.30
990.00
0.69
45.00
198. OC
0.87
15.00
I. 00
3.91
417.60
480.00
C.22
32.00
3S2.QO
-------
ATCHAFALAYA
STCRET NUMBER: EGSSOCO
CONTINUED
11 22 74
12 11 74
01 18 75
TAXA
ACTINASTRtM HANTZSCHIl
V. FLUVIATILE
ANABAENA
ANKISTRCOESMUS ? SPIRALIS
ANKISTROOESMUS FALCATUS
V. HIRABILIS
APhANIZGPENON FLOS-AQUAE
ASTERICNELLA FORMOSA
H-. CENTRIC CI ATOMS
J^ CLCSTERIUM
- COCCOIC CELL
CCCCONEIS
COCCCNEIS PLACENTULA
COELASTRUM
COELASTRUM MICRCPORUM
COELASTRUM SPHAERICUN
CRYFTOKCNAS
CRYPTOMCNAS EROSA
CRYPTOfQKAS MARSSONII
CRYPTOMCNAS REFLEXA
CRYPTOfCNAS SPP.
CYANOPHYTAN FILAMENT
CYCLCTELLA
CYCLOTELLA MENENGHINIANA
CYFBELLA
CACTYLOCCCCOPSIS
EUCLENA TRIPTERIS
FLAGELLATE fl
»2
*3
FLAGELLATE
FLAGELLATE
GCfPHONEMA
ANGUSTATUP
i ALGAL
1 UNITS
FORM IS 1C PER ML
CEL
FIL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CCL
COL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
•
X
X
X
X
ALGAL
tNITS
S 1C PER ML
1
5
4
13.3
16.7
3.3
6.7
13.3
X
X
X
X
X
132
165
33
66
132
X
ALGAL
UMTS
S K PER ML
1
81.7
X
-
X
X
X
X
392
X
X
-------
ATCHAFALAYA
STCRET NUMBER: EC59000
CONT1NUEC
r\j
00
11 22 74
12 11
01 18 75
TAXA
GCfPHOKEPA ANGUSTATUM
V. PRCDUCTA
GOFPHONEMA PARVULUM
GCPPHGfcEMA SPP.
GYRCSIGPA KUTZINGII
GYFOSIGMA SCALPROIDES
HAKTZSCHIA AMPHICXYS
KIRCHNERIELLA
»>ALLCHCKAS
HELOSIRA #1
CELOSIRA CISTANS
PELOSIRA GRANULATA
MELCSIRA GRANULATA
V. ANCLSTISSIMA
MELOSIRA ISLANOICA
MELOSIRA VARIANS
KAVICULA
NITZSCHIA
NITZSCHIA *\
M12SCHIA *2
NITZSCHIA FILIFORMIS
CCCYSTIS EORGEI
CSCILLATCRIA
CSCILLATORIA «1
CSCILLATCRIA *2
PECIASTRUM BIRAOIATUM
PHACUS LCNGICAUCA
PTERCMCNAS ANGULCSA
RAPHIDICPSIS
SCENEOESMUS BICAtCATUS
SCENEOESMUS B1JUGA
SCtNEOESMUS DIMQRPHUS
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
FIL
CCL
CEL
CEL
FIL
COL
CCL
COL
s
5
3
2
1
*C
12.5
12.5
25.0
25.0
12.5
ALGAL
UNITS
PER ML
X
X
44
44
X
X
88
88
44
S
2
1C
3.3
13.3
20.0
3.3
ALGAL
UMTS
PER ML
X
X
X
33
132
198
33
S
3
XC
9.2
ALGAL
UMTS
PEP ML
X
X
X
X
44
X
-------
ro
ATCHAFALAtA
STCRET ISUMBER: EC59000 CQNTINUEC
TAXA
SCENEOESfUS PRQTUBERANS
SCEKEDESKUS QUACRICAUQA
SKELETCNEMA POTAfOS
STEPHANCCISCUS
STEPHANCOISCLS ASTRAEA
SYNECRA ULNA
TElftASTROM STAUPCGEMAEFQRME
TRACHELOCNAS INTERMEDIA
TCTAL
11 22 74
12 11 74
01 18 75
FORM
COL
COL
CEL
CEL
CEL
CEL
COL
CEL
S
4
tEC
12.5
;
ALGAL
UMTS
PER ML
44
S
3
%C
e.7
ALGAL
UMTS
PER PL
66
X
X
X
S
2
*C
9.2
ALGAL
UNITS
PER HL
44
352
S90
480
-------
ATCHAFALAYA
STORE! NUMBER: E059000 CONTINUED
NYGAARD TROPHIC STATE INDICES
DATE 04 15 75 06 14 75
MYXCPHYCEAN
CHLOROPHYCEAN
EUGLENCPHYTE
OIATCM
COMPOUND
03/0 E
05/0 6
0/08 ?
0.62 E
13/0 E
01/0 E
05/0 E
0.50 E
07/0 E
16/0 E
CO
O
PALMER'S ORGANIC POLLUTION INDICES
DATE 04 15 75 06 14 75
GENLS
SPECIES
13
CO
05
00
SPECIES DIVERSITY AND ABUKCANCE INDICES
DATE 04 15 75 06 14 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXM
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
fEAN NUMBER OF INOIVIOUALS/TAXA
NUfBER/ML OF MOST ABUNDANT TAXCN
H
S
M
W
C
N
J
L
K
3.37
26.00
1.00
4.70
4549.50
1350.00
0.72
51.92
300.00
2.30
18.00
1.00
4.17
811.90
353.00
0.55
19.61
97. CO
-------
ATCHAFALAYA
STORET NUMBER: E059000 CONTINUED
04 15 75
06 14 75
TAXA
ACTINASTRUM HANT2SCHII
V. FLUVIATILE
ANABAENA
ANKISTRGDESMUS 7 SriRALIS
ANKISTPCDESMUS FALCATUS
V. MIRABILIS
APhANIZCfENON FLCS-AQUAE
ASTERICNELLA FORfCSA
CENTRIC CIATOMS
CLCSTERtUM
,_, COCCOID CELL
Co COCCCNEIS
1-1 COCCQNEIS FLACEKTULA
COELASTRUM
CCELASTPUM MICRCPORUM
COELASTRUM SPHAERICUH
CRYPTOHCKAS
CRVFTO^'C^AS EROSA
CRYPTOMCNAS MARSSQNII
CRYPTOMGNAS REFLEXA
CRYPTOMCNAS SPP.
CYANGPHVTAN FILAMENT
CYCLCTELLA
CYCLOTELLA MENENGHINIAKA
CYKBELLA
CACTYLCCCCCOPSIS
EUGLENA TRIPTERIS
FLAGELLATE II
FLAGELLATE *2
FLAGELLATE #3
GC^PHQKEMA
GO^PHOKEt'A ANGUSTATUM
FORM
CEL
FIL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CCL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
ALGAL
UNITS
S «C PER ML
3
1
2.2
4.4
8.9
4.4
6.7
22.2
30
X
X
60
120
60
X
X
90
300
X
ALGAL
UNITS
S XC PER ML
2
3
4
18.1
18.1
18.1
X
64
64
64
X
X
X
-------
ATCHAFALAYA
STCRET NUMBER: EOS9000
CONTINUED
u>
ro
04 15 75
06
75
TAXA
GCMPHONEMA ANGUSTATLH
V. PRODUCTA
GCMPHONEMA PARVULUM
GCMPHONEMA SPP.
GYFCSICMA KUTZINGII
GYROSIGMA SCALPRCIDES
HANTZSCHIA AMPHIOXYS
KIRCHNEPIELLA
MALLOHCNAS
MELGSIRA «l
MELOSIRA OISTANS
MELOSIRA GRANULATA
MELCSIFA GRANULATA
V. ANGLSTISSIHA
MELOSIRA ISLANDICA
MELCSIRA V/RIANS
NAVICULA
MTZSCHIA
NITZSCHIA *1
NITZSCHIA «2
MTZSCHIA FILIFCPMIS
OOCYSTIS BORGEI
CSCILLATCRIA
OSCILLATCRIA HI
CSCILLATCRIA *2
PECIASTRUM BIRACIATUM
PHACLS LCNGICAUCA
PTEROMCNAS ANGULQSA
RAPHICICFSIS
SCENEDESMUS BICALOATUS
SCENEDESMUS BIJUGA
SCEKEDESMUS OIMCRPhUS
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
FIL
COL
CEL
CEL
FIL
COL
COL
COL
S
4
5
2
XC
17.8
8.9
4.4
6.7
4.4
ALGAL
UNITS
PER ML
X
240
X
X
120
X
60
90
X
60
X
S
5
K
18.1
ALGAL
UNITS
PER KL
X
X
X
64
X
X
X
X
-------
ATCHAFALAYA
STCRET NUMBER: EC59000
CONTINUED
04 15 75
06 14 75
CO
CO
TAXA
SCENEOESHUS PRQTUBERANS
SCENEDESPUS QUAORICAUDA
SKELETCNEMA POTAMOS
STEPHANODISCUS
STEPhANGOISCUS ASTRAEA
SYNEORA ULNA
TETRASTRUM STAUROGENIAEFORHE
TRACHELCMONAS INTERMEDIA
1CTAL
1
1
FORM |
COL
COL
CEL
CEL
CEL
CEL
CCL
CEL
S
XC
1
1
6.7|
1
2.21
1
1
1
ALGAL 1
UNITS 1
PER ML I
X
90
30
X
1350
S *
1
1
1(27.
1
1
1
1
1 1
r*
L*
1
1
51
1
1
1
1
1
ALGAL
UNITS
PER ML
97
X
X
353
1
1
1
-------
JTCHAFALAYA
STORET NUMBER: EC6COCO
NYGAARD TROPHIC STATE INDICES
.GATE 11 21 74 12 16 75
MYXOPHYCEAN 03/0 E 1.00 E
CHLORCPHYCEAN 03/0 E 5.00 E
EUGLENCPHYTE 0.33 E 0.33 E
DIATOM 2.00 E 0.76 E
CCMPCUND 14/0 E 15.0 E
PALMER'S ORGANIC POLLUTION INDICES
OATE 11 21 74 12 16 75
CO
GENUS
SPECIES
07
04
05
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXh
TOTAL DIVERSITY
TCTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
PEAN NUMBER OF INDIVIDUALS/TAXA
NUFBER/ML CF MOST ABUNDANT TAXCN
11 21 74 12 16 75
H
S
M
;H
0
N
J
L
K
3.01
19.00
l.CO
4.25
4177.88
1388. OC
0.71
73.05
430.00
3.35
29.00
1.00
4.86
3115.50
930.00
0.69
32.07
169.00
-------
ATCHAFALAYA
STORE! NUMBER: E060000
CONTINUED
11 21 74
12 16 75
U>
en
TAXA
ANK1STROCESMUS FALCATUS
ASTERICNELLA FORMOSA
CELL
CLCSTERICM
COSCINCOISCUS ROTHII
V. SUeSALSA
CRYPTONCNAS
CYANOPHYTAN FILAMENT
CYCLOTELLA MENEKGHINUM
CYMBELLA TURGIOA
DACTYLCCCCCOPSIS
EUGLENA
FLAGELLATE il
FLAGELLATE §2
GLEN001MUM OCULATUM
GCPPHOfcEMA
GCMPHGNEMA OLIVACEUf
GYRCSIGMA
HANTZSCI-IA
HELCSIRA
PELCSIRA DISTANS
*ELCSIM GRANULATA
HELCSIRA GRANULATA
V. ANGLSTISSfHA
MERISMQPEDIA TENUISSIMA
NAVICULA
KIT2SCHIA
CSCILLATCRIA
PECIASTPUM BORYANUM
PENNATE
PHACLS NORCSTEDTII
PHACUS TORTUS
FORM
CEL
CEL
CEL
CEL
1
CEL 1
C6L I
Fit- 1
CEL 1
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
FIL
COL
CEL
CEL
CEL
S
3
5
1
XC
11.9)
9.51
9.5|
'
31.0
.
4.8
2.4
2.4
ALGAL
UNITS
PER ML
X
X
165
132
132
X
X
430
X
X
66
X
33
33
S
4
3
1
2
5
1C
3.0
3.0
12.2
3.0
15.2
3.0
12.2
3.0
16.2
3.0
12.2
ALGAL
UNITS
PER ML
28
X
28
X
113
28
141
28
113
28
X
X
X
X
169
28
X
113
X
X
X
X
-------
CO
ATCHAFALAVA
STCRET MIMBERJ E060COO
TAX*
SCEKEDESMUS ACUTUS
SCENEDESKtS DIMCRPHUS
SCENEOESMUS QUADRICAUOA
SKELETCNEMA POTAHOS
STEPHANCDISCUS ASTRAEA
STEPhANQOISCUS NIAGARAE
SURIRELLA
TETRAEORCN MINIMUM
TRACHELCMCNAS
CONTINUED
11 21 74
12 16 75
FORM
COL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
I
1
IS
1 i
1 1
I4|
1 1
121
1 1
1 1
1 1
1 1
tc
1
2.41
7.11
4.81
14.31
1
1
1
1
ALGAL
UNITS
PER ML
33
99
66
199
X
S
XC
3.0
9.1
ALGAL
UMTS
PER ML
X
X
28
X
85
X
X
TOTAL
1388
930
-------
STGRET NUMBER: E062COO
NYGAARD TROPHIC STATE INDICES
DATE 01 18 75 06 14 75
MYXOPHYCEAN
CHLORCPHYCEAN
EUGLENOPHYTE
DIATOM
COMPCUND
3.00 E
1.00 E
0/0* ?
0.62 E
9.00 E
5.00 E
7.00 E
0.25 E
1.25 E
20.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 01 18 75 06 14 75
CO
GENUS
SPECIES
13
04
10
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 01 18 75 06 14 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INOIVICUALS/ML
EVENESS COMPONENT
»»EAN NUMBER OF INCIVIDUALS/TAXA
KLMBER/ML OF MOST ABUNDANT TAXON
H
S
M
:H
0
N
J
L
K
3.67
23.00
1.00
4.52
6323.41
1723.00
0.81
74.91
203.00
2.94
26.00
1.00
4.70
1743.42
593.00
0.63
22.81
174.00
-------
4TCHAFALAYA
STORE! NUMBER: E062000 CONTINUED
01 18 75
06
75
CO
CO
TAXA
ANABAENA
ANA8AENQPSIS RACIBQRSKII
AhKlSTRCDESMUS
APHANIZCMENQN FLOS-AQUAE
ASTERICNELLA FORMOSA
CHROOMONAS
CLCSTERIUH
CLCSTEPILH KUTZINGII
COELASTRUM MICRQPORUH
COSCINOOISCUS LACUSTRIS
CRYPTCHCNAS EROSA
CRVPTOMCNAS HARSSCNII
CVCLCTELLA
CYHBELLA
CYST
CACTYLOCCCCOPSIS
EUGLENA
EUGLENA TRIPTERIS ?
FRAGILARIA CROTCNENSIS
HANTZSCHIA AMPHIGXYS
*ELCSIRA CISTANS
MELOSIRA GRANULATA
MELCSIPA GRANULATA
V. ANGLSTISSIMA
fERISMQPEDIA
NAVICULA
NI1ZSCHIA
NITZSCHIA *1
NITZSCHIA «2
OSCILLATOR IA *1
CSCILLATCRIA «2
FANCORINA fCRUM
FORM
FIL
FIL
CEL
FIL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
FIL
FIL
COL
ALGAL
UMTS
S XC PER ML
3
1
2
5
1
1
1
1 X
8.81 152
8.81 152
1 X
1
1
f
11.81 203
11.81 203
5.9J 101
1 X
5.9| 101
5.9| 101
1
1
3.0| 51
1 X
11.81 203
1 X
1
1 X
1
5.9| 101
I
3.0| 51
1 X
1
ALGAL
UNITS
S XC PER HL
5
2
1
3
1 K
1 1
5.9
29.3
5.9
23.4
5.9
5.9
5.9
X
X
X
X
X
35
174
X
X
35
139
35
X
X
X
35
35
X
-------
ATCHAfALAYA
STCRET NUMBER: E062000
TAXA
fHCPMIOIUM
PTERCMCNAS
SCENEDESKUS BICAUCATUS
SCENEOESHUS BIJUGA
V. FLEXUOSUS
to SCENEOESHUS OIHORPHUS
«3 SCENEDESMUS QUAORICAUDA
SC»-ROEDER1A SETIGERA
SKELETCNEMA POT0MQS
STEPHANODISCUS
SYNECRA
SYNEDRA LLNA
TRACHELOHONAS
CONTINUED
01 la 75
06
75
I
FORM |
FIL
CEL
COL
COL
COL
CCL
CEL
CEl
CEL
CEL
CEL
CEL
S
1
4
tc
5.91
3.0
8.8
ALGAL 1
UNITS 1
PER HL I
101
X
51
152
X
S
ttc
5.9
5.9
5.9
ALGAL
IjNHS
PER ML
35
X
X
35
35
X
X
X
TCTAL
1723
593
-------
ATCHAFALAYA
STGRET MIHBER: E064000
NVGAARD TROPHIC STATE INDICES
DATE 01 18 75
MVXCPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
2.00 E
2*00 E
0.12 ?
0.53 F
9.00 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 01 18 75
GENUS
SPECIES
08
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 01 18 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TCTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
*EAN NUPBER CF INOIVIDUALS/TAXA
NUMBER/ML OF MOST ABUNDANT TAXON
H
S
H
;H
D
N
J
L
K
3.13
44.00
1.00
5.46
4479.03
1431.00
0.57
32.52
348.00
-------
ATCHAFALAYA
STCRET NUMBER: E064000 CONTINUED
01 18 75
TAXA
AMUSTRCOESHUS
AMCISTRCDESMUS FALCATUS
APHANIZCPENQN FLOS-ACUAE
ASTERICNELLA FORMOSA
CAPTER1A ?
CHRYSOPHYTAN COCCOID CELL
CLCSTERIUM
COCCONEIS PLACEMULA
COSCINCDISCUS ROTHII
V. SUfiSALSA
CRYPTQMCNAS
CYANOPHYTAN FILAMENT
CYCLCTELLA BODAMCA ?
CYCLOTELLA MENENGHINIANA
CYFBELLA
CACTYLOCCCCOPS1S
DIATOMA VULGARE
EPITHEMIA ?
FRAGILARIA CROTONENSIS
GCt-PHONEMA OLIVACEUM
GYfNCDINIUM ORDINATUK ?
GYRCS1GMA
LUNATE CELL
PELOSIRA DISTANS
MELOSIPA GRANULATA
MELCSIPA GPANULATA
V. ANGLSTISSIMA
PELGSIRA VARIANS
NAVICULA «2
NAVICULA EXIGUA
NIT2SChIA ? «1
NIT/SCHIA #2
| ALGAL 1
| UNITS 1
FORM IS *C PER ML 1
CEL 1 1
CEL 1 1
FIL 1 I
CEL 1 1
CEL 1 2.3|
CEL 1
1
CEL 1 I 1
CEL 1 1 1
1
1
CEL 1 1 1.21
CEL 131 9.21
FIL
CEL
CEL 5
CEL
CEL,
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL 1
CEL
CEL
CEL
CEL
CEL
CEL
CEL
12.71
1
4.71
1
1
1.21
i
1
1.21
1
1
1.21
24.31
1
1
3.51
\
3.51
1
I
1
X 1
X 1
X 1
X
33
X
X
X
17
132
182 t
X 1
67
X
X
17
X
X
17
X
X
17
348
X
50
X
50
X
X
X
-------
ATCHAFALAYA
STCRET NUMBER: F.064000 CONTINUED
01 18 75
TAXA
MTZSCHI4 **
NI1ZSCHIA SPP.
MTZSCHIA TfttStlCNELLA
V. LEVIDENSIS
OSCILLATOR IA
SCEKEOESMUS DIKCRPHUS
SCENEOESMUS QUAOftlCAUOA
SKELETCSEMA POTAHQS
STEPHANQOISCUS ASTRAEA
£ SURIRELLA §1
ro SORtRELLA «2
SYfcEDRA ULNA VARS.
SYNURA
TRACHELCMGNAS INTERMEDIA
FORM
CEL
CEL
CEL
Fit
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
2
K
tc
1
4.6
23.5
I 6.9
ALGAL
UNITS
PER HL
X
66
X
X
X
X
X
X
336
X
X
X
X
[ 99
TCTAL
-------
STCRET NUMBER: E0650CO
NY6AARD TROPHIC STATE INDICES
DATE 01 18 75 04 18 75
MYXCPHYCEAN
CHLORCPHYCEAN
EUGLENOPHYTE
CI ATOM
COMPOUND
1.00 E
2.00 E
0/03 ?
2.00 E
9.00 E
C3/0 E
01/0 E
0.75 E
0.60 E
10/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 01 18 75 04 18 75
U)
GENUS
SPECIES
04
00
07
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 01 18 75 04 18 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
FAXIMUM DIVERSITY
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
*EAN NUMBER CF INDIVIDUALS/TAX*
NUMBER/1L CF POST ABUNDANT TAXON
H
S
M
;H
D
N
J
L
K
2.67
15.00
1.00
3.91
1775.55
665.00
0.68
44.33
212.00
2.51
19.00
1.00
4.25
4121.42
1642.00
0.59
86.42
441.00
-------
ATCHAFALAYA
STCRET NUMBER: E065COO
CONTINUED
01 IS 75
04 16 75
TAXA
ASTERICNELLA FORMOSA
CENTRIC DIATOMS
CHLAMYOCMONAS
CLCSTERIUM
CCCCCNEIS
COSCINCDISCUS RCTHII
V. SUESALSA
CRUCIGEMA TETRAPECIA
CRYPTCMCNAS
CRYPTOMCNAS EROSA
CYCLOTELLA PENEf^GHl MANA
CYM8ELLA
CACTYLCCCCCOPSIS
FLAGELLATE 01
GCFPHONEMA
GYROSIGMA SCALPRCIDES
LEFCCINCLIS
KELOSIRA
MELCSIRA DISTANS
MTZSCHIA
NITZSCHIA ACICULARIS
MTZSCHIA FILIFCRMIS
NITZSCMA SPP.
CSCILLATORIA
PECIASTRUM BORYANUM
FHCRPICIUM
SCENEDESMLS ACUMNATUS
STEPHANOOISCUS
STfcPHAKCCISCUS ASTRAEA
ThACHELCfONAS URCEOLATA
TRACHELCMONAS VOLVOCINA
FORM
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CCL
FIL
CCL
CEL
CEL
CEL
CEL
S
1
3
5
2
4
SC
15.91
115.9
4.1
12.0
31.9
12.0
4.1
4.1
ALGAL
UNITS
PER ML
106
106
27
X
X
X
80
X
X
212
80
27
X
27
X
S
2
1
5
4
3
tc
26.9
4.9
1
24.4
21.9
9.7
7.3
4.9
ALGAL
UNITS
PER ML
441
60
X
401
X
36C
16C
X
X
X
X
X
120
X
X
80
X
X
X
TCTAL
665
1642
-------
ATCHAFALAYA
STORET NUMBERS C001000
NYGAARD TRCPHIC STATE INCICfcS
DATE 01 22 71 II 20 Tt 06 12 75
MYXCPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
01ATOM
COMPOUND
01/0 E
04/0 E
0.80 E
1.00 E
13/0 E
0/0 G
04/0 E
1.75 E
3.00 E
14/0 E
04/0 E
13/0 E
0.53 E
1.00 E
30/0 E
PALMER'S ORGANIC POLLUTION INDICES
GATE 01 22 74 11 20 74 06 12 75
in
GENUS
SPECIES
1C
03
06
00
15
07
SPECIES DIVERSITY AND ABUNDANCE INDICES
GATE
AVERAGE DIVERSITY
NUMBER CF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS CCMPCNENT
MEAN NUMBER CF INOIVIDUALS/TAXA
NUMBER/ML CF MOST ABUNDANT TAXON
01 22 74 11 20 74 06 12 75
H
S
M
:H
D
N
J
L
K
2.24
31.00
1.00
4.95
21194.88
9462.00
0.45
305.23
5135. CO
1.81
17.00
1.00
4.09
17687.32
9772.00
0.44
574.82
47C3.CO
2.86
44.00
1.00
5.46
32203.60
11260.00
C.52
255.91
5376. CO
-------
ATCHAFALAYA
STCRET MJHBFR: GOOIOCO
CONTINUED
01 22 74
11 20 74
06 12 75
-p.
cn
TAXA
ACTINASTPUM
ACTINASTRUM HANTZSCHII
V. FLUVIATILE
AMUSTPCDESHUS ?
ANKISTPGDESMUS FALCATUS
ANKISTPODESMUS FALCATUS
V. HIRABILIS
APHANOThECE
CARTER IA
CENTRIC DIATOM
CENTRIC DIATOM «1
CEMRIC CIATCM 12
CHILOMQNAS PARAMAECIUM
CHLAMYCCMCNAS GLOBOSA
CHLGRCCCCCALEAN CCCCCIO CELL
CHLCROGCNIUM
ChLOROPHYTAN COCCOIO CELL
CHRGOHCKAS NORDSTEOTII
COCCCNEIS PLACEKTULA
CRYPTOHCNAS EROSA
CRYPTOKNAS HARSSONII
CKYPTUMCNAS REFLEXA
CY»-ATOPLEURA
CACTYLCCCCCOPSIS
CACTYLCCCCCOPSIS IPREGULARIS
CICTYOSPHAERIUM
CIKCBRYCN CYLINORICUH
ELAKATOTHRIX GELATINOSA
EUGLENA
EUGLENA #2
EUGLENA 03
EUGLENA 04
FORM
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
S
4
5
2
XC
2.4
1.1
0.3
0.5
4.5
2.9
13.4
0.8
0.3
0.5
ALGAL
UNITS
PER ML
X
228
101
25
51
X
430
X
278
X
1265
76
X
25
X
51
X
S
3
2
1
XC
0.6
48.1
28.1
18.7
ALGAL
UMTS
PER ML
X
61
4703
2749
1832
X
S
1
3
2
5
XC
0.9
1.8
47.7
1.8
10.0
11.4
6.8
ALGAL
UMTS
PER ML
X
102
205
X
5376
X
X
205
X
1126
1280
768
X
X
X
X
X
X
-------
ATCHAFALAYA
STCRET NUMBER: G001000
CONTINUED
01 22 74
11 20
06 12 75
TAXA
EUGLENA GRACILIS
EUGLENA QXYURIS 7
EUCLENCIO FLAGELLATE
EUNOTIA CURVATA
FLAGELLATE il
FLAGELLATE *4
GLENODIN1UM OCU.ATUM
GOLENKIMA RAOIATA
GOHPHQNEHA
GYMNODINIUP ALBULUM
LEFCCIKCLIS ACUTA ?
PALLCHCNAS
MALLCMCNAS AKROKCHOS ?
tELCSlRA OISTANS
MERISMOPEOIA TENUISSIHA
MTZSChIA
NITZSCHIA »l
NITZSCHIA *2
CFHIOCYTIUH CAPITATUM
V. LONGISPINUH
CSCILLATGRIA SUB6REVIS
PEPIDIMCM CUAORIOEKS
PHACLS CLRVICAUCA
FhACUS CLABER
PHACLS TQRTLS
PTEROMONAS
PTERCMCNAS AKGULCSA
SCENEDESMOS DIHORPHLS
SCENECESMUS ECORNtS
V. OISCIFORHIS
SCENEOESMUS INTERHED1US
V. BICAUCATUS
1 ALGAL
1 UNITS 1
FORM |S tC PER ML I!
ALGAL
UNITS
i XC PER ML
CEL 1 I I
CEL 1
CEL |
CEL 1 X
CEL I 54.31 5135
CEL
CEL 0.3 25
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
COL
1.6| 152
0.5
0.5
0.3
51
X
51
25
X
5
0.6
0.6
ALGAL
UMTS
S tC PER ML
X
X
X
x
X
61
61
4
1
1
1 X
1 X
1
0.9| 102
0.9| 102
0.5) 51
2.3
5.5
1.4
0.5
0.9
X
X
X
256
614
X
154
X
51
X
X
X
102
-------
00
ATCHAFALAYA
STCRET NUMBER: GOOIOCO
TAXA
SCENEDESHUS QUACRICAUOA
SKELETCNEMA POTAKOS
SPERMATOZOOPSIS EXULTANS
SYNEORA
SYf^CRA UVELLA
TETRAEORCN CAUOATUM
TETRAEDRCN MUTICUM
TETRAEORON REGULARF ?
V. INCUS
TETRASTPUM GLABRUM
TETPASTRUM HETERACANTHUM
TRACHELCMONAS
TRACHELCMONAS ABRUPTA
TRAC^ELCMCNAS HISPIDA
V. PUNCTATA
TRACHELCMONAS INTERMEDIA
TRACH6LCHCNAS OBLCNGA
CONTINUED
01 22 74
il 20 74
06 12 75
FORM
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
S
3
*C
15.8
ALGAL
UNITS
PER ML
1493
X
X
X
X
S
4
%C
\
1.9
0.6
0.6|
ALGAL
LMTS
PER ML
I
183
X
61
61
S
«C
0.9
C.9
2.7
0.5
0.5
0,9
C.5
ALGAL
UNITS
PER ML
1 102
102
307
51
51
102
X
51
TCTAL
9462
9772
11260
-------
JjCHAFALAYA
STCRET NUMBER: GC020CO
NYGAARD TROPHIC STATE INCICES
CATE 01 22 75 06 12 75
MVXOPHYCEAN
CHLQRCPhYCEAN
EUGLENOPHYTE
01ATOM
COMPCUND
0/0 0
03/0 E
1.00 E
01/0 E
07/0 E
4.00 E
15.0 E
0.53 E
1.00 E
32.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 01 22 75 06 12 75
vo
GENUS
SPECIES
04
00
10
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 01 22 75 06 12 75
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TCTAL NUMBER OF INOIVIOUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INDIVIOUALS/TAXA
NUMBER/ML CF POST ABUNDANT TAXON
H
S
M
;H
D
N
J
L
K
1.73
22.00
1.00
4.46
24963.90
14430.00
0.39
655.91
7854.00
2.63
48.00
1.00
5.58
7840.03
2981.00
0.47
62.10
922.00
-------
ATCHAFALAYA
STCRET NUMBER: 0002000
CONTINUED
in
O
01 22 75
06 12 75
TAXA
ACTINASTRUM HANTZSChll
V. FLUVIATILE
AKKISTPCDESMUS ?
ANKISTFCDESMUS FALCATUS
AKKISTCGOESMUS FALCATUS
V. MIRABILIS
CARTERIA
CHLAMYDCMONAS
CHLOROGCMUM MIMMUM
CHFOOCGCCUS
CHPGCMCNAS
CLCSTERItM
COCCCNEIS
CCELASTRUM SPHAERICUH
CRYPTOMCNAS EROSA
CRYPTQMCKAS HARSSQNII
CRYPTOHOAS REFLEXA
CRYPTOPCNAS SPP.
CYCLCTELLA J'ENEKGHIN IANA
OIKOBRYCN
EUGLENA
EUGLENA 1RIPTERIS
FLAGELLATE il
FLAGELLATES
GLENOOINIUC CCI.LATUM
LEPOCINCLIS
LUNATE CELL
HELOSIRA OISTANS
PERISMCPEGIA TENUISSIMA
MTZSCHIA
COCYSTIS
OSCILLATCRIA #1
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
FIL
ALGAL
UNITS
S XC PER ML
5
4
2
1
0.21 31
1.51 218
3.51 499
54.4
28.3
0.2
0.7
X
78S4
X
X
X
4083
31
X
X
94
ALGAL
LNITS
S «C PER ML
5
I
3
2
9.3
3.1
2.0
30.9
19.6
1.0
24.fi
2.0
X
277
X
92
61
X
X
X
X
X
X
922
584
X
31
X
X
738
X
X
61
X
X
-------
JTCHAFALAYA
STORET KUMBER: 0002000
CONTINUEC
TAXA
GSCltLATCRIA ANGUSTA
PANOORItiA flCRlIM
PECIASTSUH TETRAS
V. TE1RAQCCN
PENMATE
PHACUS *1
PHACLS GLABER
PHACUS LCNGICAUOA
PTESCMCNAS ?
PTERCHCNAS ANGULCSA
SCENEDESMUS ABUNCANS
SCENEOESMUS BICALOATUS
SCENEQESMUS OIKGRPHtS
SCENEOESfUS ECGRKIS
V. OISC1FCRHTS
SCENEDESIHIS PROTUBERANS
SCHPCEOEBIA SETICERA
SKELETCN£MA POTAfOS
SYKURA il
SVNLRA SPP.
SYKLRA UVELLA
TETRAECPCN CAUOATUK
TETRAECRCN RECULARE
TETRAECRCN TUMItULUH
THCRAKCMCNAS ? PELCNANII
TRACHELCMCNAS *1
TRACt-ELCHONAS 12
TRACHELCPCIsAS 43
TRACHELCMONAS INTERMEDIA
TPACHELCCChAS SPP.
TRACMELCftCNAS VCLVCCINA
TPEU8AP 14
01 22 75
06 12 75
1
FORM IS
FIL
COL
cot
CEt
CEL
CEL
CEU
CEt
CEt
COL
cot
COL
COL
COL
CEt
CEL
CEL
cet
CEt
CEt
CEL
CEL
CEL
CEt
CtL
CEL
CEL
CEL
CEL
CEL
tc
CU4
10.6
0.2
ALGAL 1
CNITS
PER HL
'
X
X
62
X
1527
X
K
X
31
S
4
?c
3.1
1.0
3.1
ALGAL t
UMTS
PER ML |
X
X
X
SZ
X
X
X
X
X
X
X
X
X
X
X
X
X
31
X
X
X
X
92
X
X
TCTAL
14430
2981
-------
ATCHAFA|.AYA
STCPET NUMBER: €003000
NYGAARO TRGPHIC STATE INCICES
DATE 01 21 75 04 15 75 06 12 75
HYXOPHYCEAN
CHLOROPHYCEAN
EUGLENQPHYTE
01 ATOM
COMPOUND
0/0 C
02/0 E
0.50 E
0/0 ?
03/0 E
3.00 E
11.0 E
C.79 E
0.50 E
28.0 E
06/0 E
12/0 E
0.44 E
1.25 E
31/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 01 21 75 04 15 75 06 12 75
Ui
ro
GENLS
SPECIES
00
00
08
03
14
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 01 21 75 04 15 75 06 12 75
AVERAGE DIVERSITY
NUMBER CF TAXA
NUMBER QF SAMPLES COMPOSITED
H
S
M
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY c
TOTAL NUMBER OF INDIVIDUALS/ML N
EVENESS COMPONENT J
PEAN NUMBER OF INOIVIDUALS/TAXA L
NUMBER/ML OF HOST ABUNDANT TAXON K
0.68
6.00
1.00
2.58
295.80
435.00
0.26
72.50
392.00
3.27
43.00
1.00
5.43
5516.49
1687.00
C.60
39.23
628.00
4.34
45. CO
1.00
5.49
13*05.90
3135.00
0.79
69.67
420.00
-------
ATCHAFALAYA
STCRET NUMBER: GCQ30CO CONTINUEC
01
OJ
01 21 75
04 15 75
06 12 75
TAXA
ACTINASTRUM
ACTINASTRUM HANTZSCHII
V. FLUVIATILE
ANABAENA
ANABAENA PLANCTONICA
ANKISTROOESMUS
ANKISTPCOESMUS FALCATUS
ANKISTPQDESMUS FALCATUS
V. PIRABILIS
CARTERIA
CENTRIC DIATOM
CEPATIUH HIRUNDINELLA
F. BRACHYCERAS
CHLAMYCCMONAS
CHLAKYDCHQNAS GLCBGSA
CHLAfYOCKCNAS SPP.
CHLOROPHYTAN COLCNY
CLCSTERICM
COCCQNEIS PLACENTULA
COELASTRUM CAMBR ICUM
V. INTERMEDIUM
COELASTRUM MICROPORUM
CRUCIGENIA
CRUCIGENIA TETRAPEOU
CRYPTOKCKAS REFLEXA
CRYPTOKCNAS SPP.
CYCLOTELLA
CYCLCTELLA KENENCHIMANA
OICTYOSPHAERIUM EHREN8ERGIANUM
ELAKATCTHRIX
EUGLENA
EUGLENA 111
1
1
FORM \
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
COL
COL
COL
CCL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
S
2
*C
2.1
1 3.0
ALGAL
UNITS
PER ML
9
1 13
S
1
4
tc
8.6
2.8
4.3
37.2
1 4.3
ALGAL
UNITS
PER ML
X
X
X
145
X
48
X
72
X
X
X
628
X
72
S
5
1
%C
5.7
1.4
1.0
1.9
0.5
9.6
0.5
ALGAL
UNITS
PER ML
180
X
45
30
X
60
15
30C
15
-------
ATCHAFALAYA
STORE? NUMBER: G003000
CONTINUED
01 21 75
04 15 75
06 12 75
tn
TAXA
EUGLENA *2
EUGLENA ACUS
EUGLENA CXYURIS
EUGLEKA SPP.
FLAGELLATE *1
FLAGELLATE *2
FLAGELLATES
GCLENKIMA
FUSIFORMIS
GLABRA
GC'FHGfcEM ACUMINATUI"!
V. TRIGGNOCEPHAtA
GYPNQOINIUP ALBULUM
GYHKCOIMLK OROINATUP
KlflCHNERIELLA
LAGERHEIHIA
LEFOCINCLIS
LtfOCINCLIS
LEfCCIKCLIS
F. HINCO
LYf.GBYA
KALLCHCNAS
HELOSIRA
fELGSIR* CISTANS
HELGSIRA GRANULATA
fELCSIRA GRANULATA
V. AKGISTISSIMA F. SPIRALIS
PELCSIRA VARIANS
fFRISHCPECIA MINIMA
MERISMCPEDIA TENUISSIMA
HESCSTIGMA VIRIDIS
NAVICULA
MTZSCHIA
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CCL
CEL
CEL
CEL
ALGAL
UNITS
S 1C PER ML
1
90.1
392
ALGAL
UNITS
S *C PER ML
2
1
1.4| 24
4.3
1.4
8.6
1.4
11.4
X
72
X
24
145
24
X
193
X
1.4| 24
1 X
ALGAL
UNITS
S ?C PER (ML
2
1 X
1
I
4.8| 150
1.9| 6C
4.8| 150
1
0.5| 15
0.5
1.0
4.8
10.0
1.9
4.8
5.3
15
30
X
150
315
00060
150
X
165
-------
ATCHAFALAYA
STORET NUMBER: G003000
CONTINUED
TAXA
fl
AC1CULAR1S
FILIFCRMIS
SPP.
NITZSCHIA
NITZSCHIA
NITZSCHIA
NITZSCHIA
COCYSTIS
OPHIOCVTIUP CAPITATUH
V. LONGISPINUH
CSCILLATCRIA
OSCILLATORIA LIHNETICA
PENMATE
PENMATES
PERIDINIUH UMBONATUM
PHACUS
ACUMINATUS
HELIKOIOES
LCNGICAUCA
HEGALOPSIS
PLANCTONEMA ?
PTERCHCNAS AKGULCSA
PTERCMONAS CPUCIATA
RAPHIOIGPSIS
RAPHIOIQPSIS CURVATA
SCENEDESMUS
SCENEDESMUS
SCENEDESMUS
SCENEOESHUS
SCENEOESCtS
SCENEDESMUS
SCENEDESMUS
PHACUS
PHACUS
PHACUS
PHACUS
ABUNCANS
BICAUOATUS
BIJUGA
OIHCRPHLS
INTERMEDIUS
INTEPMED1US
V. BICALCATUS
SCENEOESHUS QUAORICAUDA
SKELETCNEMA POTAfCS
01 21 75
04 15 75
06 12 75
\
FORM |
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
FIL
FIL
COL
CCL
CCL
COL
CGL
COL
COL
COL
CEL
S
5
3
4
XC
3.0
0.9
C.9
ALGAL
UNITS
PER *L
13
4
4
S
XC
1.*
1.4
ALGAL
UNITS
PER ML
X
24
X
X
X
X
X
X
X
24
S
4
ALGAL
UNITS
XC PER ML
1
1 x
1 x
13.41 420
1
1
I
0.5| 15
1
1
1
2.9| 90
1
0.51 15
1
C.5| 15
1
1
1
1
1 X
3.31 105
1
1
1.01 30
1.41 45
1.01 3C
1
i
1
1
1
1.01 3C
-------
ATCHAFALAYA
STGRET NUMBER: 0003000
CONTINUED
01 21 15
0* 15 75
06 12 75
01
TAXA
SPERMATGZOQPSIS
STEPHANODISCUS
SVKEDRA
TETRAFDPCN
TETRAEDfiCN MINIMUM
TETPAECPCN REGULARE
V. GRANULATA
TETPAEOFGN TRIGQNUM 7
TETRAECRCN TRIGCIsUH
V. GRACILE
TETRASTPUH GLABRUM
TETRASTRtiM STAURCGEMAEFCRME
TRACHELCMCNAS *1
TRACHELCPCfvAS 92
TRACI-ELCNQNAS GI6BERCSA
TRAChELCMONAS HISPICA
TRACHELCfCKAS LCNGICAUCA
TRBCHELCMCNAS SPP.
TRACHELCHCNAS VCLVCCINA
TREUBARIA
ULCTHRIX
TOTAL
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
S
zc
ALGAL
UNITS
PER WL
-------
ATCHAFALAyA
STCRET NUMBER: G003000 CONTINUED
NYGAARC TROPHIC STATE INCICES
DATE 12 12 75
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATOM
COMPCUND
2.00 E
12.0 E
0.36 E
2.50 E
24.0 £
PALHER'S ORGANIC POLLUTICK INDICES
CATE 12 12 75
01
GENUS
SPECIES
15
03
SPECIES DIVERSITY AND ABUNDANCE INCICES
CATE 12 12 75
AVERAGE DIVERSITY H
NUMBER CF TAX* S
NUMBER OF SAMPLES COMPOSITED M
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY 0
TOTAL NUHdER OF INDIVIDUALS/ML N
EVEMESS CCMPCNENT j
WEAN NUMBER OF INOIVIDUALS/TAXA L
MlMRER/HL CF MOST iflUNCANT TAXON K
3.06
40.00
1.00
5.32
49914.72
16312.00
0.58
407.80
5034.CO
-------
ATCHAFALAYA
STORET NUMBER: G0030GO CONTINUED
12 12 75
tn
00
TAXA
ACTINASTRUM
ACTINASTRUM HANTZSCHII
V. FLUVIATILE
ANABAFNA
ANABAEKA PLANCTONICA
ANMSTfiCDESMUS
ANKISTSCOESMUS FALCATUS
ANKISTFCDESMUS FALCATUS
V. MIRA6ILIS
CARTER IA
CENTRIC DIATOM
CERATIUH HIRUNOINELLA
F. BRACHYCERAS
CHLAPYDCPONAS
CHLAtfYCCPGNAS GtCBCSA
CHLAMYDCHONAS SPP.
ChLCROPHYTAN COLCNY
CLCSTEPIIH
COCCONEIS PLACENTULA
CCELASTRU" CAHBRICUH
V. INTERMEDIUM
COELASTRUM MICRQPORUM
CRLCIGEMA
CRCC1GENIA TETRAPEOIA
CRYFTOHCNAS REFLEXA
CRYPTOfCNAS SPP.
CYCLOTELLA
CYCLCTELLA KENE^GHIN UNA
OICTYOSPhAERIUM EHKENBERGIANUM
ELAKATCTHUX
EUGLENA
EUGLENA II
FORM
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CCL
COL
COL
COL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
S
3
A
«C
13.8
1.7
0.5
4.4
2.0
0.5
ALGAL
UMTS
PER ML
2255
X
282
X
X
SI
X
725
322
81
X
X
-------
ATCHAFALAYA
STGRET NUMBER: G003000 CONTINUED
12 12 75
01
TAXA
EUGLENA *2
EUGLENA ACUS
EUGLENA CXYURIS
EUGLENA SPP.
FLAGELLATE 01
FLAGELLATE §2
FLAGELLATES
GCLENKIMA
GOPPHONEMA
GOPPHONEMA ACUHINATUH
V. TRIGCNOCEPHALA
GYHNOOINIUM ALBULUH
GYPNODINIU* ORDINATUM
KIRCHNERIELLA
LAGERHEIHIA
LEFCCIKCLIS
LEPOCINCLIS FUSIFORMIS ?
LEFCCINCLIS GLABRA
F. HIKCF
LYKGBYA
MLLCMCNAS
FELOSIRA
MELGSIRA OISTANS
^ELCSIliA GRANULATA
MELGSIRA GRANULATA
V. ANCLSTISSIHA F. SP
HELCSIRA VARIANS
MERISMOPEDIA MINIMA
^ERISHOPEDIA TENUISSIHA
HESOSTIG^A VIRICIS
NAVICULA
NITZSCHI*
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
COL
CEL
CEL
CEL
ALGAL
UNITS
S XC PER *L
2
5
25.2
1.5
1.5
5.4
0.5
0.2
X
4108
242
242
886
X
81
40
-------
ATCHAFALAYA
STCRET NUMBER: GC030CO
CONTINUED
12 12 75
TAXA
NITZSCKI4 *1
NITZSCHIA ACICULARIS
NITZSCHIA FILIFORHIS
KITZSCHIA SPP.
QCCYSTIS
CPMCCVTIUM CAPITATUM
V. LONGISPINUM
OSCILLATOR IA
OSCILLATORIA LIHNETICA
PENNATE
PENMATES
PEFIDIMUM UMBONATUM
PHACUS
PHACUS *CUMINATUS
PHACLS HELIKOIDES
PHACUS LCNGICAUCA
PhACUS PEGALOPSIS
PLANCTCNEHA ?
PTEROMONAS ANGULOSA
PTERCMCNAS CRUCIATA
RAPHIDIGPSIS
RAPHIDICPSIS CURVATA
SCENEDESfLS
SCfcNEDESPtS
SC€N6DESfUS
SCENEDES^OS
SCENEOcSMUS
SCEMEOESMUS
SCENEDESPLS
ABUNCANS
8ICAUOATUS
BIJUGA
DIMORPHUS
INTERHEDIUS
INTERHEOIUS
V. BICALCATUS
SCENEOESMCS CUACRICAtCA
SKELETONEMA POTAMQS
FORM
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
FIL
FIL
COL
CCL
COL
CCL
COL
COL
COL
CCL
CEL
s
1
1C
30.9
0.5
0.2
1.7
0.7
0.7
4.7
ALGAL
LMTS
PER ML
X
X
5034
X
X
X
81
X
X
40
282
121
121
765
-------
ATCHAFALAYA
STORE! NUMBER: C003000
CONTINUED
12 12 75
TAX*
SPERMATQZOOPSIS
STEPHAKGCISCUS
SYNEDRA
TETRAECRCN
TETRAFOFCN MINIMUM
TETRAEDPCN REGULARS
V. GRANULATA
TETRAFCRCK TRIGCKUK ?
TETRAECRCN TRIGONUM
V. GRACILE
TETRASTRLM GLABRUM
TETRASTRUM STAURCGEN1AEFORME
TRACHELCPCNAS «1
TRACHELCMCNAS «2
TRAO.ELCMCMAS GI6BERCSA
TRACHELCMCNAS HISPICA
TRACHELCMONAS UONGICAUDA
TRACHELCfCNAS SPP.
TRACHELCMONAS VOLVOCINA
TREUBAPIA
ULC1HRIX
1
1
FORM |
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEl
CEL
CEL
CEL
CEL
FIL
S
*C
0,2)
1.7
1.0
0.2
ALGAL |
UMTS
PER ML
40
I
1
X
282
161
40
X
TOTAL
16312
-------
*TCHAFALAYA
STCRET NUMBER: GC04000
NYGAARD TROPHIC STATE INDICES
DATE li 20 74 12 18 74 12 U 75
MYXOPHYCEAN
CHLCROPHYCEAN
EUGLENOPHYTE
DIATOM
COMPCUND
2.00 E
3.00 E
0.40 E
1.75 E
14.0 E
6.00 E
4.00 E
0.90 E
1.25 E
24.0 E
5.00 E
13.0 E
0.61 E
0.50 E
33.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 11 20 74 12 18 74 12 11 75
ro
GENUS
SPECIES
00
00
15
00
12
10
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY MAXh
TOTAL DIVERSITY
TOTAL NUM8EP OF INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INDIVIOUALS/TAXA
NUMBER/ML CF PCST ABUNDANT TAXON
11 20 74 12 18 74 12 11 75
H
s
M
!h
0
N
J
L
K
1.22
23.00
1.00
4.52
1775.10
1455.00
0.27
63.26
1141.00
3.11
38.00
1.00
5.25
34253.54
11014.00
0.59
289.84
3004.03
2.75
50.00
1.00
5.64
34938.75
12705.00
0.49
254.10
5789.00
-------
ATCHAFALAYA
STORET NUMBER: G004000 CONTINUED
11 20 74
12 18 74
12 11 75
TAXA
ANKI STRODESHUS ?
ANKISTRCOESMUS FALCATUS
ANKISTPCOESMUS FALCATUS
V. MIRABILIS
APhANIlOENCN FLOS-AQUAE
APHANOCAPSA DELICATISSIMA ?
CENTRIC DIATOM
CENTRIC CIATOMS
CHROOMCNAS
CLCSTERIUM
COCCONEIS
COCCONEIS II
COCCCNEIS PLACENTULA
V. LINEATA
COELASTRUM MICROPORUH
COSCINCDISCUS LAGJSTRIS
CCSMARIUM
CRCCIGEMA TETRAPEDIA
CRYPTOMCNAS EROSA
CRYPTQMCNAS REFLEXA
CYANOPHYTAN FILAMENT
CYCLOTELLA PENENGHIMANA
CYST
CACTYLOCCCCOPSIS
DACTYLOCOCCOPSIS ?
CACTYLCCCCCCPSIS IRREGULAR IS
DICTYOSPhAERIUM PJLChELLUM
EUCLENA
EUCLENA *l
EUGLENA #2
EUGLENA *3
EUGLENA ACUS
FORM
CEL
CEL
CEL
FIL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
COL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
S
4
2
-------
(TCHAFALAYA
STCRET KUHBER: GC040CO CONTINUED
11 20 V,
12 18 74
12 li 75
TAXA
EUGLENA GRACILIS
EUGLENA CXYURIS
EUGLENA SUBEHREKBERGl! ?
FLAGELLATE
FLAGELLATES
GLENQDIMUM QCL'LATUM
GOfPHONECA
GY^KOOINIUM ALBULUM
HANTZSCHIA
LEFOCIKCLIS ACUTA ?
LUhATE CCLCNY
HALLOHCNAS CAUOATA
^ELCSIPA DISTANS
fELCSICi GR4NULATA
HELOSIPA GRANULATA
V. ANGLSTISSIMA F. SPIRALIS
PELQSIRA ITALICA ?
MERISHCPEDIA TENUISSIMA
MESCSTIGMA VIRICIS
HICflOCYSTIS
^ICROCYSTIS AERUGINOSA
fICRCCYSTIS INCERIA
NITZSCHI*
NITZSCHIA «1
NITZSCHIA *2
NITZSCH1* #3
NITZSCHK TRYBLICNELLA
OSCILLATOR I A
CSCILL4TCRIA LIMNETICA
PECIAS1RUH TETRAS
PFNNATES
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
COL
CEL
COL
COL
COL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
COL
CEL
C6L
S
1
5
XC
78.4
8.1
ALGAL
UNITS
PER ML
1141
X
X
X
X
X
lie
s
5
1
*C
4.0
0.4
2.5
3.3
1.1
0.4
0.7
1.1
27.3
ALGAL
UNITS
PER M.
X
X
441
X
40
X
280
361
120
X
40
60
X
X
120
3C04
S
1
*C
1.2
5.4
0.4
0.4
0.4
1.5
45.6
ALGAL
UNITS
PER ML
X
X
X
147
X
X
X
687
49
49
49
X
X
X
196
X
X
5789
-------
ATCHAFALAYA
STORET NUMBER: GC040CO
CONTINUED
TAXA
PERIDIMUM UMBONATUM
PHACLS CLRVICAUCA
PHACUS ORBICULAR IS
PHACUS PSEUCCNORCSTEOTII
PHACCS TQRlbS
RHCPALOCIA GIBBA
SCENEDESMLS APICULATUS
SCENEDESMUS APICLLATUS ?
SCENEDESMUS BIJUCA
SCENEDESMUS OIHCRPHUS
SCENEOESMUS INTERNEOIUS
V. BICALCATUS
SCENEDESPIS PROTUBERANS
SCENEOESMUS QUAORICAUOA
SKELETCNEMA POTAMCS
STEPHANODISCUS
STEPHANCOISCUS NIAGARAE
SURIRELLA fl
SYNECRA
SYKECRA ULNA
SYNURA UVELLA
TETRAECRCN TRIGCKUM
V. GRACILE
TETRASTRUM GLABRUH
TETPASTRUM STAUPCGEN IAEFORME
TRACHELCMONAS FLliVIATILIS
TRACHELCMCNAS INTERMEDIA
TRACHELCMCNAS LACUSTSIS
11 20 74
12 18 74
12 11 75
1
FORM |
CEL t
CEL
CEL
CEL
CEL
CEL
CGL
COL
COL
CDL
COL
CCL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
S
31
tc
2.1
ALGAL
UNITS
PER ML
39
X
X
X
X
S
xc
0.7
0.7
2.5
0.4
ALGAL
UNITS
PER ML
X
X
X
80
ec
28C
X
X
X
I 40
1 X
S
5
«C
0.8
C.8
1.2
0.8
1.5
C.8
1.2
1.5
ALGAL
UNITS
PER ML
X
X
X
X
98
98
147
98
X
196
X
98
X
147
X
196
TOTAL
1455
11014
12705
-------
ATCHAFALAYA
STORE! NUMBER: HC080CO
NYGAARD TROPHIC STATE INDICES
DATE 11 22 74 12 10 7* 01 17 75
MYXOPHYCEAN
CHLCRCPHYCEAN
EUGLENOPHYTE
DIATOM
CQMPCUNO
3.00 E
7.00 E
0.20 ?
1.00 E
15.0 E
4.00 E
6.00 E
0.10 ?
G.67 E
17.0 E
05/0 E
05/0 E
0.10 ?
0.89 E
19/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 11 22 7*» i2 10 74 01 17 75
CTi
GENUS
SPECIES
05
00
09
04
10
00
AVERAGE DIVERSITY
'NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY
TOTAL DIVERSITY
TOTAL NtMBEF OF INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INOIV IDUALS/TAXA
NLMBER/ML CF MOST ABUNDANT TAXCN
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
11 22 74 12 10 74 01 17 75
H
S
M
MAXH
0
N
J
L
K
2.84
24.00
1.00
4.58
1207.00
425.00
0.62
17.71
113.00
2.49
31.00
1.00
4.95
1869.99
751.00
0.50
24.23
278.00
3.43
32.00
1.00
5.00
18950.75
5525. CO
0.69
172.66
1519.00
-------
ATCHAFALAYA
STORET NUMBER: H008000
CONTINUED
11 22 74
12 10 74
01 17 75
TAXA
ACTINASTRUM HANTZSCHII
V. FLUVIATILE
ANABAENA
AMU STRODE SMUS FALCATUS
V. MIRABILIS
APHANIZCMENGN FLOS-ACUAE
ASTERIONELLA FORMOSA
CHLAMYOCMONAS
CHROOMCNAS
CHRCCMCKAS SPP.
CLCSTERIUM
COCCONEIS
COCCCNE1S PLACENTULA
COSCINCDISCUS RCTHII
V. SUESALSA
CRtCIGENIA APICULATA
CRtCIGENIA FENESTRATA
CRYPTOMCNAS EROS*
CRYPTQMCNAS MARSSCM I
CRYPTOMCNAS REFLEXA
CRYPTCfCNAS SPP.
CYCLCTELLA
CYCLQTELLA MENENGHINIANA
CYfATOPLEURA
CYfBELtA
CACTYLOCCCCOPSIS
CACTYLOCOCCCPSIS IRREGULAR IS
CIFLONEIS INTERRUPTA ?
OIPLCNEIS PUELLA
EPIThEMIA
EPIThEMIA ?
EUGLENA
FORM
CEL
FIL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
5
3
%C
6.6
6.6
26.6
ALGAL
UMTS
PER ML
X
X
28
X
28
X
113
X
S
3
*C
18.5
3,7
ALGAL
UNITS
PER ML
X
X
139
X
X
X
X
X
28
X
S
4
«C
2.3
7.6
1.5
2.3
4.6
4.6
1.5
ALGAL
UNITS
PER ML
X
127
422
X
X
84
127
253
X
X
253
84
-------
ATCHAFALAYA
STGRET NUMBER: H008000
CONTINUED
11 22 74
12 10 74
01 17 75
CO
TAXA
EUGLENA ACUS
EUCLENA GRACILIS
FLAGELLATE *1
FLAGELLATE f2
GLCEOCYSTIS
GLCEOCYSTIS PLANCTCMCA
GOHPHONEMA
GGMPHONEMA CONSTRICTUM
GGKPHOhEfA OLIVACEUM
GYROSIGMA
KIRCHNERIELLA
MELCSIRA
MELCSIRA CISTANS
PELCSIPA GRANULATA
MELGSIRA GRANULATA
V. AMGLSTISSIMA
HELCSIRA GRANULATA
V. ANGLSTISSIMA F. SPIRAL IS
PEfllSMCFEDIA
MERISMCPEOIA TENUISSIMA
* ICR ACT1MUI"
MICRCCYSTIS
HICROCYSTIS INCERTA
NAVICULA *l
NAVICULA #2
NAVICULA #3
NAVICULA CINCTA
NAVICUIA GASTP.UM
NAVICULA SPP.
M1ZSCHIA
MTZSCHIA »2
MTZSChIA LCRENZIAN* ?
FORM
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CCL
COL
COL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
s
zc
ALGAL
UNITS
PER ML
X
X
X
X
S
ZC
3.7
3.7
ALGAL
UNITS
PER ML
X
28
X
X
X
X
X
X
28
S
3
1C
10.7
6.1
1.5
2.3
0.8
0.8
ALGAL
UMTS
PER ML
591
337
X
84
127
X
X
X
42
X
X
42
-------
ATCHAFALAYA
STORET NUMBER: HCOBOCO CONTINUEC
11 22 74
12 10 74
01 17 75
to
TAXA
NITZSChIA SPP.
OOCYSTIS
OOCYSTIS PUSILL A
CSCILLATCRIA
CSCILLATCRIA LIMNETICA
PALMELLGID COLONY
PEDIASTRLM DUPLEX
PEDIASTRUM DUPLEX
V. CLATHRATUM
PfcDIASTRUM SIMPLEX
PERICINIUM LMBONATUH
PHACtS CURVICAUCA
PHCRHIDIUH
PIKNULARIA ?
PINNULARIA GIBBA
PTEROHCNAS
RAPHIOICPSIS
SCENEDESMUS ABUNDANS
SCENEDESKUS BICAtOATUS
SCENEDESMUS BIJUGA
SCENEDESHUS DENTICLLATtS
SCENEOESMUS DIMOPPHUS
SCENEDESt'LS PROTUBERANS
SCENEOESMUS QUADRICAUOA
SCHROEDERIA SETIGERA
SKELETCNEMA POTAMOS
STEPhAKCDISCUS
STEPHANCCISCUS ASTRAEA
STEPHANOOISCUS NIAGARAE
SURIREILA
SYNECRA ULNA
SYNEORA ULNA
V. OXYRHYNCHUS
FORM
CEL
CEL
CEL
FIL
FIL
COL
COL
COL
COL
CEL
CEL
FIL
CEL
CEL
CEL
FIL
COL
COL
COL
COL
COL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
ALGAL
UNITS
S *C PER ML
2
4
1
1
13.4| 57
13.4
6.6
13.4
13.4
X
57
X
X
X
28
X
X
57
57
X
ALGAL
LMTS
S tC PER ML
1
4
2
5
37.0
11.1
18.5
3.7
X
X
278
X
X
X
X
83
139
28
X
X
ALGAL
UNITS
S XC PER ML
2(14.51 B01
1
5
27.5
0.8
9.2
0.3
1519
42
506
42
X
-------
ATCHAFflLAYA
STCRET NUMBER: HOQ80CO CONTINUED
TAXA
SYNLRA ?
TETRAEORCN MINIMUM
TETRASTRUM ELEGANS
TETRASTRLM STAURCGEMAEFORHE
TRACHELQMONAS INTERMEDIA
TOTAL
11 22 74
12 10 74
01 17 75
FORM
CEL
CEL
COL
COL
CEL
S
I
1
1
1
1
ALGAL
UNITS
ZC PER ML
1
1
1
1
1
ALGAL
LNITS
S tC PER ML
1 1
1 1
1 1
t 1
1 1
1
I
IS
1 |
1 |
1 I
I |
1 1
*c
1
1
1
1
0.8|
ALGAL
UMTS
PER ML
X
42
425
751
5525
-------
ATCHAFALAYA
STORET NUMBER: H008000 CONTINUEC
NYGAARO TRCPHIC STATE INDICES
DATE 12 11 75
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATOM
CCMPCUNC
07/0 E
16/0 E
0.09 7
0.69 E
34/0 E
PALMER'S ORGANIC PGLLUTICN INDICES
GATE 12 11 75
GENUS
SPECIES
24
07
SPECIES DIVERSITY AND ABUNDANCE INDICES
AVERAGE DIVERSITY
NUMBER CF TAXA
NUMBER OF SAMPLES COMPOSITED
DATE
H
S
M
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY D
TOTAL NUMBER OF INDIVIDUALS/ML N
EVENESS COMPONENT J
KEAN NUMBER CF INDIVIDUALS/TAXA L
KUHBER/ML Of MOST ABUNDANT TAXON K
12 11 75
3.88
56.00
1.00
5.61
64450.68
16611.00
0.67
296.63
2929.00
-------
ATCHAFALAYA
STORET NUMBER: H0080CO
CONTINUED
12 11 75
TAXA
ACTINASTRU* HANTZSCHII
V. FUJVIATIIE
ANASAENA
ANKISTPCCESWUS FALCATUS
V. HIRABILIS
APHANIZCPENOK FLCS-AQUAE
ASTERIONCLLA FGRNCSA
CHPCQMCNAS
CHPOCHCNAS SPP.
CLCSTERIUM
CCCCCNEIS
COCCONEIS PLACENTULA
CQSCINCOISCUS ROTHII
V. SUeSALSA
CRUCIGENIA APICULATA
CRLC1CEMA FENESTRATA
CRYPTOCNAS EROSA
CRYPTOVCNAS MARSSONII
CRVFTC»*CNAS REFLEXA
CRYPTOJ-CNAS SPP.
CtCLCTELLA
CYCLCTELLA PENENCHIMANA
CYMATOPLEURA
CY^BELLA
CACTYLCCCCCOPSIS
CACTYLCCCCCOPSIS IRREGULARIS
DIFLC\EIS INTERRUPTA ?
CIPLCNEIS PUELLA
EPIT^t^•IA
EPITfEMlA ?
EUGLEN*
FORM
CEL
FIL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
1
5
*C
1
i
2.9
0.8
2.1
17.6
2.1
0.3
2.1
0.8
2.9
3.7
8.2
ALGAL
UNITS
PER ML
X
481
131
X
350
2929
350
X
44
350
X
131
481
612
X
X
1355
X
X
-------
ATCHAFALAYA
STOPET NUMBER: H008000
CONTINUED
•vj
CO
12 il 75
TAXA
EUGLENA ACUS
EUCLENA GRACILIS
FLAGELLATE fl
FLAGELLATE «2
GLCEOCYSTIS
GLOEOCYSTIS PLANCTGNICA
GCHPHONEMA
GCPFHOKEPA CCNSTPICTUM
GGPPHONEMA OLIVACEUM
GYPOSIGPA
KIRCHNEPIELLA
MELCSIPA
PELGSIRA DISTANS
MELOSIPA GRANULATA
MELOSIRA GRANULATA
V. ANGLSTISSIMA
MELOSIRA GRANULATA
V. ANGtSTISSIMA F. SPIRAL IS
MEPISMCPECIA
MERISMOPEDIA TENUISSIMA
MICRACTIMUM
MICPCCYSTIS
MICRCCYSTIS INCERTA
KAVICULA II
NAVICULA #2
NAVICULA *3
NAVICULA CINCTA
NAVICULA GASTRUM
NAVICULA SPP.
NI1ZSCHIA
MTZSCHIA *2
NITZSCHIA LORENZIANA ?
FORM
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
COL
CCL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
2
*C
0.3
13.2
2.6
0.5
1.6
0.8
3.2
ALGAL
UNITS
PER ML
X
X
X
44
2185
437
X
87
262
131
X
525
X
X
-------
ATCHAfALAYA
STCRET NUMBER: HC08000
CONTINUED
12 11 75
TAXA
SPP.
NITZSCHI/i
OOCYSTIS
COCYSTIS PUSH-LA
CSCILLATGRIA
OSCILLATORIA LIHNET1CA
PALMELLCID COLONY
PECIASTPLM CUPLEX
PECIASTRLM DUPLEX
V. CLATHRATUM
PEOIASTRUM SIMPLEX
PERIDINIUM UMBONATUM
PHACLS CURVICAUCA
PHGRHIDIUM
PINNULARIA ?
PINNULARIA GIBBA
PTERGMONAS
RAPHIDIGPSIS
SCENEDESMUS ABUMCANS
SCENEOESMUS
SCENEOESMOS
SCENEOESMUS
SCENEDESHLS
SCENEOESMUS
SCENEOESHUS
SCHRGEDERIA
SKELETCKEMA
STEPHAKCOISCUS
STEPHANODISCUS
STEPhANCDISCUS
SURIRELLA
SYNEDRA ULNA
SYKECRA ULNA
V. QXYRHYKCHUS
BICALCATUS
BIJUGA
DENTICULATUS
OIMCRPHUS
PROTU3ERANS
CUACRICAUOA
SETIGERA
POTAMOS
ASTRAEA
NIAGARAE
,
FORM
ALGAL
UNITS
S ZC PER ML
CEL Ml 16. 31 2710
CEL
CEL
FIL
FIL
COL
COL
COL
COL
CEL
CEL
FIL
CEL
CEL
CEL
FIL
COL
COL
CCL
COL
CCL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
3
9.7
l.l
2.6
1.1
0.5
0.5
1.6
0.3
X
1617
X
X
X
X
175
437
X
X
175
87
87
X
262
44
X
-------
ATCHAFALAYA
STORET NUMBER: H008000
CONTINUED
TAXA
SYNURA ?
TETRAECRCN MINIMUM
TETRASTRUM ELEGAhS
TETRASTRUM STAUROGENIAEFORME
TRACHELOHCNAS INTERMEDIA
12 11 75
FORM
CEL
CEL
CCL
COL
CEL
S
I
1
1
1
1
tc
1
1
0.31
0.31
0.31
ALGAL
UNITS
PER ML
X
X
44
44
44
en
TOTAL
16611
-------
STCRET NUMBER: H013000
NYGAARD TROPHIC STATE INDICES
DATE 11 22 74 12 10 74 01 17 75
MYXOPHYCEAN 4.00 E 2.00 E 4.00 E
CHLCRCPHYCEAN 11.0 E 6.40 E 7.50 E
EUGLENOPHYTE 0.18 ? 0.12 7 0.09 7
DIATOM i.20 E 0.40 E 0.7C E
COMPOUND 19.6 E 11.0 E 16.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 11 22 74 12 10 74 01 17 75
GENUS
SPECIES
14
07
26
07
20
07
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 11 22 74 12 10 74 01 17 75
AVERAGE DIVERSITY
H
1.73
NUMBER OF TAXA S
NUMBER OF SAMPLES COMPOSITED H
MAXIMUM DIVERSITY HAXH
TOTAL DIVERSITY D
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
fEAN NUfBER CF INCIVIDUALS/TAXA
NLMBER/ML OF PCST ABUNDANT TAXON K 103507.00
4.06
3.46
72.00
l.CO
6.17
D 231122.81
N 133597.00
J 0.28
L 1855.51
94.00
1.00
6.55
94522.72
47912.00
0.62
509. 7C
10483.00
38.00
1.00
5.25
18334.54
52SS.OO
0.66
13S.45
1635.00
-------
ATCHAFALAYA
STCRET NUMBER: H013000
CONTINUED
11 22 74
12 1C 74
01 17 75
TAXA
AC TINA STRUM
ACTINASTRUM HANTZSCH1I
V. FLUVIATILE
AMPHORA
AKAEAENA
ANABAENCPSIS CIRCULARIS
ANABAENOPSIS RACI8ORSKII
ANKISTPGOESPUS FALCATUS
AMU STRODE SMUS FALCATUS
V. MIRA8ILIS
APHANIZCfENCN GRACILE ?
APHANOTt-ECE NIDLLANS
CARTERIA
CENTRIC DIATOM
ChAETOCEROS ?
CHitTCCEBOS ELMCREI
CHLAMYOCMCNAS GLCBOSA
CHLORELLA
CHLCROGCMUM
CHLCRCGCNIUM ELGNGATUM
CHROCMCNAS 92
CLCSTERIUM
CGCCCNEIS PLACENTULA
CGELASTRUM ?
CCSMARIUM
CRLCIGENIA FENESTRATA
CRUCIG6NIA TETRAP60IA
CRVFTCMCNAS
CRYPTOMCKAS EROSA
CRYPTOKCKAS MARSSONII
CYANOPHYTAN FILAMENT
FORM
COL
CEL
CEL
FIL
FIL
FIL
CEL
CEL
FIL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
COL
COL
CEL
CEL
CEL
FIL
ALGAL
UMTS
S *C PER ML
3
2
I
0.4
0.2
0.3
1.3
0.4
1.6
0.1
0.9
1.9
0.1
0.1
X
X
570
285
428
1711
570
2139
143
X
1141
2566
143
X
143
77.51103507
ALGAL
UNITS
S 1C PER KL
4
0.1
O.I
1.3
6.7
0.2
C.3
0.5
0.1
1.4
1.0
28
28
X
60S
3209
X
111
X
X
X
166
221
X
55
664
470
ALGAL
UNITS
S XC PER ML
3
1.0
1.0
3.5
0.5
8.0
X
52
53
X
185
X
X
X
26
422
-------
ATCHAFALAYA
STORE! NUMBER: H013000
CONTINUED
CO
11 22 74
12 10 74
01 17 75
TAXA
CYCLOTELLA PENENGHIKIAKA
CYPSELLA VENTRICOSA
CACTYLGCOCCOPSIS
DICTYOSPHAERIUM
DICTYOSPHAERIUM PULChELLUM
01NCFLAGELLATE CYST
CIPLONEIS SMITHII
EPITHEHIA TURGICA
EUASTRtM
EUGLENA
EUGLENA fl
EUGLENA *2
EUGLENA
EUGLENA
EUNOTIA
V. MINOP
FLAGELLATE
FLAGELLATE
FLAGELLATE
FRAGILARIA
FR/GILARIA
ACUS
SPP.
PECTINALIS
#2
#5
CONSTRUENS
CONSTRUENS
V. SUBSALINA
GCLENKIMA
GCLENKINl* RADIATA
OCKPHONEPA ANGUSTATtr*
V. PRCCUCTA
GCf'FHCKECA PARVliL'J*
GCI-PriONEHA SPP.
GYfNOOINIUM OROINATUK
GYPCSIGMA SACRUM
KIRCHNERIELLA
Klf-CHNEPlELLA LUNAR1S
FORM
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
A
tc
0.4
5.5
0.5
0.5
0.1
ALGAL
UNITS
PER ML
1 570
1
I 7414
I 713
X
713
143
X
S
3
*C
1.6
0.1
4.7
0.8
0.1
0.2
8.9
1.5
0.1
0.3
O.I
1.7
ALGAL
LNITS
PER ML
774
55
2240
360
X
X
X
26
X
X
X
83
X
4287
719
28
X
X
let
X
X
28
830
X
S
1
xc
4.0
1.5
3C.9
0.5
ALGAL
UMTS
PER ML
1 211
79
X
X
1635
26
-------
ATCHAFALAYA
STCRET NUMBER: HC13CCO
CONTINUED
11 22 74
12 10 74
01 17 75
TAXA
SUBSALSA
LAGERHEIMIA
LEFOCINCLIS
LYhGBYA
LYKGBYA LAGERHEIPII
MELOSIRA OISTANS
MELCSI PA GRANULATA
HELOSIRA GRANULATA
V. ANGLSTISSIMA
PELGSIRA GRANULATA
V. ANGLSTISSIMA F.
MERISMCPECIA GLAUCA
MERISMOPEOIA
PEPISMOPEDIA
MERISMCPEDIA
HICRACTIMUM
MICROCYSTIS
MICROCYSTIS INCERTA
NAVICULA
NAVICULA CUSPIOAT4 ?
NITZSCHIA
MTZSCMA ?
MTZSCHIA
NITZSCHIA
NITZSCHIA
NITZSCHIA
NITZSCHIA
SPI-RALIS
MINIMA
PUNCTATA
TENUISSIHA
*1
• 2
FILIFCPMIS
HANTZSCHIANA
HOLSATICA
SPP.
NITZSCHIA
GOCYSTIS
CPHOCYTIUK CAPITATUM
V. LCfcGISPINUM
CSCILLATCRIA
CSC1LLATCRIA LIHNETICA
FORM
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
COL
COL
COL
COL
COL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
CEL
CEL
CEL
FIL
FIL
S
tc
0.3
0.5
0.1
0.2
0.1
0.1
ALGAL
UNITS
PER ML
X
X
X
X
428
713
143
X
285
143
143
S
2
5
1
ALGAL
UNITS
3CC PER ML
0.11 26
0.11 55
1
21.91 10483
3.5| 1687
1 X
1
0.81 387
1
1 x
0.6| 277
0.6| 277
I
2.81 1355
0.11 28
I X
4.31 2C47
1
1 X
1
1 x
1 x
1
0.11 55
1 x
0.1| 28
1.9| S13
1
1
1
20.21 9681
1
S
5
*C
3.0
1.5
0.5
0.5
9.5
2.0
4.5
ALGAL
UMTS
PER ML
X
158
79
X
26
X
26
501
106
X
237
-------
ATCHAFALAYA
STQRET MJMBER: HOIBCOO
CONTINUEC
00
o
11 22 74
12 10 74
01 17 75
"AHA
PECIASTRUM GIRACIATUM
V. LGKGECCRNUTUP
PEDIASTRUM DUPLEX
PECIASTRUM DUPLEX
V. CLA1HRATUM
PECIASTRUM DUPLEX
V. RETICULATUM
PECIASTRUM SIMPLEX
PECIASTRUM SIMPLEX
V. OUCDENARIUM
PECIASTRUM TETRAS
PECIASTRUM TETRAS
V. TETRACDCN
FEKNATE II
PENNATE *2
PENNATE §3
PHACUS PYRUM
PlhNULARIA GENTILIS
FTERCMCNAS
RAFHIGICPSIS CUPVATA
RHCPALOCIA 6IB8A
SCENEOESMUS A6UNCANS
SCENEOES^CS ACUMINATUS
SCENEOESMUS ACUTUS
SCESEDESfUS ANOPALUS
SCEKEOESHUS ARMATUS
SCENEOESfUS ARMATUS
V. 3ICALCATUS
SCENEDESKtS ARMATUS
V. SOGLARIENSIS F. EIC/SUDATUS
SCENEDESMLS BICALDATUS
SCENEOESMUS BIJUGA
FORM
COL
COL
COL
CCL
COL
COL
COL
CGL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
COL
CCL
COL
COL
CCL
COL
COL
CCL
COL
s
5
zc
0.1
0.4
0.1
1.6
0.3
0.2
0.1
ALGAL
UNITS
PER ML
X
143
X
X
X
X
570
143
X
X
2139
428
285
X
143
X
X
S
*C
0.2
0.1
0.1
0.1
2.1
0.2
0.7
ALGAL
UMTS
PER ML
X
83
28
28
X
55
X
5S6
X
X
111
331
S
ZC
ALGAL
UNITS
PER ML
X
X
X
-------
ATCHAFALAYA
STCRET NUMBER: HOISOQO CONTINUEC
11 22 74
12 10 74
01 17 75
00
TAXA
SCENEDESMUS BRASILIENSIS
SCENEDESMUS DENT 1CULATUS
V. LINEARIS
SCENEDESMUS DIMORPHUS
SCENEDESMUS GPOLIENSIS
SCENEDESHUS OVALTERKUS
SCENEDESPUS PROTUBERANS
SCENEDESMUS QUAORICAUOA
SCHROECERIA SETICERA
SKELETCNEfA POTAPCS
SPERMATGZOOPSIS
STAURASTRUM ftl
STAtRASTRUM #2
STAURASTRUH CUSPIOATUM ?
STAURASTRUM TETRACEPUM
STEPHANQOISCUS
STEPHAKCDISCUS ASTRAEA
SYNEDRA ACtS
SYNEDRA SPP.
SYNECRA ULNA
V. OXYRHYNCHUS
TETRAECRON
TETRAECRCN CAUCATUM
V. LUNGISPINUM
TETRAEDRCN GRAC1LE
TETPAECRCN ^INIMUf
TETPAECRCN CINIHUM
V. SCROBICULATUf
TFTRAECRCN PliTICUM
T£TRAEC«CN MUTICUM
F. PUKCTULATUM
TFTRAEDRON PENTAEORICUf*
FORM
COL
CCL
COL
CCL
COL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
*C
0.5
1.6
C.2
0.3
0.1
0.1
0.3
ALGAL
UNITS
PER ML
713
X
X
2139
285
428
143
X
143
428
X
X
S
tc
0.2
1.3
0.9
1.2
1.3
0.6
0.1
0.1
0.1
1.2
0.2
0.1
ALGAL
UMTS
PER PL
83
X
609
443
553
60S
277
28
28
28
X
X
553
X
X
X
111
28
S
2
4
SC
2.5
13.9
6.5
4.0
0.5
ALGAL
UNITS
PER ML
X
132
739
343
211
X
26
-------
00
ro
ATCHAFALAYA
STORE! NUHBfR: HO13000
CONTINUED
11 22 74
12 10 74
01 17 75
TAXA
TETRAEDRGN REGULAR?
V. INCUS
TETRASTRUH ELEGAI>S
TFTRASTRUH HETERACANTHUM
TETRASTRUM STAURCGEN1A6FORME
TRACHELCMCNAS CYLINCPICA
TRACHELCHCNAS INTERMEDIA
TRACHELCHCNAS QBLQNGA 7
TRACHELCMCNAS PLAYFAIRII
TRAChELGMOKAS VOLVOC1NA
TCTAL
FORM
CEL
COL
COL
COL
CEL
CEL
CEL
CEL
CEL
S
SC
0.1
0.2
0.2
ALGAL
UMTS
PER ML
X
143
X
X
285
X
X
X
285
S XC
1
1
1
t
1 0.8
1
1 0.2
1
t
1
ALGAL
UNITS
PER *L
X
387
83
S
*C
0.5
ALGAL
UNITS
PER ML
26
133597
47912
5299
-------
ATCHAFALAYA
STCRET NUMBER: HC130CO
CONTINUED
NYGAARO TRCPHIC STATE INCICES
GATE 12 11 75
MYXOPHVCEAN 2.75 E
CHLCROPHYCEAN 5,25 E
EUGLENCPHYTE 0.03 ?
DIATOM 1.00 E
COMPOUND 10.7 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 12 11 75
CO
GENUS
SPECIES
20
07
SPECIES DIVERSITY AND ABUNDANCE INDICES
AVERAGE DIVERSITY
NUMBER CF TAXA
NUMBER OF SAMPLES COMPOSITED
DATE
H
S
M
KAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY D
TOTAL NUMBER CF INDIVIDUALS/ML N
EVENESS COMPCNENT J
MEAN NUMBER OF INDIVIDUALS/TAXA L
NUMBER/ML CF MOST ABUNDANT TAXON «
12 11 75
3.78
33.00
1.00
5.04
52504.20
13890.00
0.75
420.51
2685.00
-------
ATCHAFALAYA
STCRET MJHBER: H013000
CONTINUED
00
12 11 75
TA>A
ACTINASTRUH
ACTINAETRUH HANTZSCHII
V. FLUVIATILE
AMPHORA
ANABAENA
ANABAEKCFSIS CIRCULARIS
ANABAENOPSIS RACIBORSKII
ANKISTRQOESMUS FALCATUS
ANKISTPCOESMUS FALCATUS
V. MIPABILIS
APHAM20CENCN GRACILE ?
APHANOTHECE NIDULANS
CARTER IA
CENTRIC CIATCM
CHAETOCEROS ?
CHAETOCEROS ELMOREI
CHLAHYCGMONAS GLCBCSA
CHLORELLA
CHLCROGCMUM
CHLCROGCNILI* ELCMGATUM
CHRGOMC^sAS *1
CHRCCMCNAS #2
CLGSTERIUM
COCCCNEIS PLACENTULA
CCELASTRUM ?
CCSfARIUM
CRCC1GEMA FENESTRATA
CRLCIGENIA TETRAPEDIA
CRYPTOMCNAS
CRYPTCHCNAS EROSA
CRYPTOMCKAS MARSSONII
CYANOPHYTAN FILAMENT
FGRM
CCL
CEL
CEL
FIL
FIL
FIL
CEL
CEL
FIL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
COL
COL
CEL
CEL
CEL
FIL
S
3
XC
6.7
12.2
0.4
1.3
0.8
7.1
ALGAL
UNITS
PER ML
<33*
16S3
X
1 58
1 175
1 117
I 992
1
1
1
-------
AfCHAFALAYA
STCRET NUMBER: HC13000
CONTINUEC
12 11 75
C3
cn
TAX*
CYCLOTELLA HENENGHINI ANA
CYHBELLA VENTRICOSA
CACTYLOCCCCCPSIS
CICTYOSPHAERIUM
DICTYOSFMERIUH PULCKELLUM
CINQFLAGELLATE CYST
OIFLCNE1S SMITH 1 1
EPITHEMIA TURGIOA
EUASTRUM
EUGLENA
ffl
*2
ACLS
SPP.
PECTINALIS
II
92
*5
CCNSTRUENS
CCNSTFUENS
EUGLENA
EUGLENA
EUGLENA
EUGLENA
EUNOTIA
V. MINCP
FLAGELLATE
FLAGELLATE
FLAGELLATE
FR4GILARIA
FR/GILARIA
V. SUeSALINA
GCLENKINIA
GGLENKIMA RADIATA
GCFPHONEHA ANGUSTATUM
V. PRCCUCTA
GCPPHONEPA PARVULUM
GOfFHOhEMA SPP.
GYl-NCDINIUt' OROINATU^
GYRCSIGMA MACRUM
KlRCt-NERIELLA
K1RCHNERIELLA LUKARIS
ORM
CEL
CEL
CEL
COL
CCL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
ZC
2.9
6.7
ALGAL
UMTS
PER ML
X
409
934
-------
ATCHAFALAYA
STCRET NUMBER: H013000 CONTINUED
oo
12 11 75
TAX A
LAGERHEICIA SUBSALSA
LEPOCINCLIS
LYNGBYA
LYNGBYA LAGERHEIMI
MELOSIRA DISTANS
PELCSIFA GRANULATA
MELOSIRA GRANULATA
V. ANCLSTISSIMA
WELOSIPA GRANULATA
V. ANGLSTISSIMA F.
PERISMOPEOIA GLAUCA
MERISHOPEDIA
MERISMOPEOIA
MERISHCFECIA
MICRACTINIUM
MICROCYSTIS
HICRCCYSTIS
NAVICULA
NAVICULA CtSPIDATA ?
NITZSCHIA
NITZSCHIA ?
NITZSCHIA
MTZSCHIA
NITZSCHIA
MTZSCHIA
NITZSCHIA
SPIRAL IS
MIMKA
PUNCTATA
TENUISSIHA
INCERTA
• 1
#2
FILIFQRMIS
HANTZSCHIAKA
HOLSATICA
SPP.
NITZSCHIA
COCYSTIS
CPHIOCYTIUM CAPITATUM
V. LCNGISPINUM
OSCILLATCRIA
OSCILLATCRIA LIMNET ICA
FORM
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
COL
CCL
COL
COL
CGL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CCL
CEL
CEL
CEL
FIL
FIL
ALGAL
UNITS
S »C PER ML
2
4
0.8
15.5
1.7
0.4
3.4
1.3
19.3
X
117
2159
X
233
58
467
175
2685
X
-------
ATCHAFALAYA
STORET NUMBER: HC13000
CONTINUED
12 11 75
TAXA
PECIASTRUM BIRADIATUM
V. LOKCECCRNUTUM
PECIASTRtM DUPLEX
PECIASTRCM DUPLEX
V. CLAThRATUM
PECIASTRtM DUPLEX
V. RETICULATUM
PECIASTRUM SIMPLEX
PECIASTRUM SIMPLEX
V. DUCDEKARIUM
03 PEDIASTRUM TETRAS
•>J PECIASTRUM TETRAS
V. TETPACCON
PENNATE *1
PENNATE i2
PENNATE §3
PHACUS PYRUM
PINNULIRIA GENTILIS
PTEROMCNAS
RAPHIDICPSIS CURVATA
PHCPALCCIA GIBBA
SCEKEDESMUS ABUNCANS
SCENEDESMUS ACUMINATUS
SCENEDESMLS ACUTUS
SCENEOESMUS ANOMALUS
SCENEDESMUS ARMATUS
SCENEDESMUS ARMATUS
V. BICAtCATUS
SCEKEDESKLS ARMATUS
V. BCGLARIENSIS F. BICAUDATtS
SCENECESMUS BICAUCATUS
SCENEDESHLS BIJUGA
FORM
COL
COL
COL
COL
CCL
COL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CCL
COL
CCL
COL
CCL
COL
CCL
COL
COL
S
*c
0.4
2.5
ALGAL
UNITS
PER ML
X
X
58
350
-------
ATCHAFALAYA
STCRET NUMBER: HC13COO
CONTINUED
12 11 75
00
CD
TAXA
SCENEDESPUS BRASIL IEKSIS
SCENEOESMLS DENTICLLATUS
V. LINEARIS
SCENEDESPLS DIMQPPHUS
SCENEOESHUS OPOL1ENSIS
SCENEOESfUS CVALTERNUS
SCENEOESMUS PROTU8ERANS
SCENEDESPUS QUADRICAUDA
SCHRCECERIA SETICERA
SKELETCNEHA POTAMOS
SPERMATCZOQPSIS
STALftASTRUM *1
STAURASTRUM «2
STAURASTRtM CUSPIOATUM ?
STAURASTRUM TETRACERUM
STEPHANCOISCUS
STEPHANCOISCOS ASTRAEA
SYNECRA ACLS
SYNECRA SPP.
SYNECRA ILNA
V. OXYRHYKCHUS
TETRAEDPCN
TEThAECRCN CAUDATUM
V. LONCISPINUM
TETRAECPCN GRACILE
TETRAEORCK MINIMUM
TETPAECRCN MNIMUM
V. SCRQBICULATUf"
TETRAECPCN KUTICUM
TETPAECRCN MUTICUM
F. PUKCTULATUM
TETPAECRCN PENTAEORICUM
FORM
COL
COL
CCL
COL
COL
CCL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
xc
2.9
5.0
5.0
1.3
0.8
ALGAL
UNITS
PER ML
409
700
700
175
X
117
-------
ATCHAFALAYA
STCRET NU*BER: HC13000
CONTINUEC
12 11 75
CO
UD
TAXA
TETRAECRCN REGULARE
V. INCUS
TETRASTRUM ELEGANS
TETRASTRUM HETERACANTHUM
TETRASTRUH STAUROGENIAEFQRHE
TRACHELQfGNAS CYLINORICA
TRACHELCMCNAS INTERMEDIA
TRACHELCMCNAS Q8LONGA ?
TRAChELOMCNAS PLAYFAIR1I
TRACHELOCNAS VCLVCCINA
FORM
CEL
COL
COL
CCL
CEL
CEL
CEL
CEL
CEL
S
XC
0.4
0.8
ALGAL
UMTS
PER ML
X
5fi
117
TOTAL
13890
-------
NAME: VERRET
STORE! NUMBER: 2216
DATE
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATCM
COMPOUND
NYGAARD TROPHIC STATE INDICES
03 20 7* 05 29 74 08 21 74
03/0 E
05/0 E
0.25 E
1.50 E
13/0 E
11.0 E
21.0 E
0.16 ?
0.67 E
41.0 E
10.0
20.0
0.27 E
1.00 E
43.0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 03 20 74 05 29 74 08 21 74
ID
O
GENOS
SPECIES
14
03
24
OS
25
04
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUH9ER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INOIVI DUALS/TAX A
NUM3ER/ML JF MJST ABUNDANT TAXON
03 20 74 05 29 74 Od 21 74
H
S
M
HAXH
0
N
J
L
K
2.77
18.00
4.00
4.17
26079.55
9415.00
0.66
523.06
3772.00
1.89
54.00
3.00
5.75
253677.69
134221.00
0.33
2485.57
93324.00
2.62
59.00
4.00
5.83
329098.20
125610.00
C.45
2123.98
68499.00
-------
LAKE NAME: VERRET
STCRET NUMBER: 2216
CONTINUED
03 20 74
05 29 74
08 21 74
CIRCULAR IS
ELENKIMI
PHILIPPINENSIS
RACIBORSKII
TAXA
ANABAENA
ANABAENA 01
ANABAENOPSIS
ANABAENOPSIS
ANABAENOPSIS
ANABAENOPSIS
ANABAENCPSIS
ANKI STRODESMUS FALCATUS
APhANIZCMENON FLOS-AQUAE
CARTERIA COROIFORMIS
CENTRIC DIATOM
CHLAMYDCMONAS #1
CHLAMYDCPONAS CIENKGHSKII
CHLOROGONIUN
CLCSTERIDIUM ?
COELASTRUM CAMBRICUM
V. INTERMEDIUM
CCELASTRUM SPHAERICUK
CGSHARIUM
CRUCIGENIA
CRliCIGENIA TETRAPECIA
CRYPTOMCNAS
CRYPTCMCNAS EROSA
CYCLOTELLA
CYLINORCSPERMUM ?
DACTYLOCCCCOPSIS IRREGULARIS
EUASTPUM DENTICULATE
EUGLENA
EUGLENA ACtS
FLAGELLATE #1
FLAGELLATE #9
FLAGELLATES
FORM
CEL
FIL
FIL
FIL
FIL
FIL
FIL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
COL
CGL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
3
2
ZC
15.2
1.2
2.3
0.8
16.71
ALGAL
UNITS
PER ML
1429
110
220
73
1575
S
3
5
2
*C
0.2
0.2
3.3
1.7
1.3
1.5
0.3
0.1
0.1
0.3
13.2
0.1
0.7
ALGAL
UNITS
PER ML
266
X
266
4436
2306
1686
2040
355
89
89
444
X
17742
X
177
976
S
1
31
5
ALGAL
UNITS
%C PER ML
1
0.9| 1139
O.lt 163
1.41 1790
1
2.31 2929
1
1 X
1
0.31 325
2.51 3091
1 X
0.51 651
0.4| 488
1
1
0.4| 488
1
1 X
1 x
0.4) 466
1
0.61 814
1 X
0.51 651
1
1
1 X
0.3) 325
1
O.ll 163
1
-------
LAKE NAME: VERRET
STCRET NUMBER: 2216
CONTINUED
03 20 74
05 29 74
08 21 74
vo
ro
TAXA
FRANCEIA OVALIS
GLENODINIUM GYMN001NIUM
GLENODINIUM GYMNCDINIUM
V. BISCUTELLIFORME
GCLENKINIA
GYMNODINIUM ORDINATU*
GYRCSIGMA
KIPCHNEPIELLA
LYNGBYA CIRCULAR IS
LYNGBYA LIMNETICA
MELOSIRA *4
MELOSIRA DISTANS
»«ELCSIP* GRANULATA
HELOSIRA GRANULATA
V. ANGLSTISSIHA F. SPIRALIS
MERISMOPEOIA TENUISSIMA
MICRACTINIUM
MICPCCYSTIS
MICROCYSTIS INCERTA
NAVICULA
NAVICULA CASCADENSIS
NEPHROCYTIUM
MT2SCHIA
NITZSCHIA ACIC'JLARIS
NITZSCHIA HOLSATICA
NI7ZSCHIA PALEA
OSCILLATORIA
CSCILLATORIA GEMINATA ?
PAKOOPINA HORUM
PECIASTROM DUPLEX
V. RETICULATUM
PEDIAS7RLM SIMPLEX
V. OUOOENARIUM
FOftM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
COL
CCL
COL
COL
CEL
CEL
CGL
CEL
CEL
CEL
CEL
FIL
FIL
COL
COL
COL
s
5
zc
3.9
0.8
0.8
4.7
1.2
ALGAL
UNITS
PER ML
366
73
73
440
110
S
4
1
-------
LAKE NAME! VERRET
STCRET NUMBER: 2216
CONTINUED
to
03 20 74
05 29 74
08 21 74
TAXA
PECIASTRUM TETRAS
V. TETRAODON
PENNATE DIATOMS
PERIDINIUM
PEPIDINIUM PUSILLUM
PERIDINIUH QUADRIDENS
PHACUS ACUHINATUS ?
PHACUS ANQKALUS
PhACUS GLA8ER
PHACUS MEGALQPSIS
PHACUS PSEUDONORDSTEDTII
RAPHIDIOPSIS CURVATA
SCENEDESMUS *2
SCENEOESMUS ABUNDANS
SCENEOESMUS BICAUDATUS
SCENEDESMUS DIMORPHLS
SCENEOESMUS OBLIQUUS
SCENEOcSPUS PROTU9ERANS
SCENEObSMCS OUADRICAUDA
SCENEOESMUS SPP.
SCHROEOERIA SETIGtRA
SPERMATCZOOPSIS
STEPHANOOISCUS
STEPHANCOISCUS ASTRAEA
SURIRELLA
SURIRELLA LINEARIS
SYNEDRA
TETRAEORCN GRACILE
TfcTRAECRCN MINIMUM
TETRAEDRON MINIMUM
V. SCRGB1CULATUM
TETFAEDRC^ MUTICUM
FORM
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CQL
COL
COL
COL
COL
CEL
COL
COL
CEL
CEL
CEL 1
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
1
4
*C
40.1
0.8
9.0
U2
0.4
0.4
ALGAL
UNITS
PER ML
3772
73
843
110
37
37
S
*C
0.1
0.1
0.5
0.2
0.1
0.6
0.1
ALGAL
UNITS
PER ML
X
89
X
X
X
X
89
621
266
177
X
X
X
798
177
S
4
*C
0.3
0.3
7.6
C.I
0.1
0.1
0.4
1.7
1.6
0.5
0.3
ALGAL
UNITS
PER ML
325
325
X
X
X
X
9600
163
163
X
163
X
488
2115
X
X
1952
651
325
-------
i
LAKE NAME: VERRET
STORET NUMBER: 2216
CONTINUED
03 20 74
05 29 74
08 21 74
IO
TAXA
TETRAEORON REGULARE
TETRAEDRCN REGULARE
V. INCUS
TETRASTRUM HETERACANTHUM
TETPASTRUM STAUROGENIAEFORME
TRJCHELCMCNAS
TRACHELOHONAS «1
TRACHELCMONAS VOLGENSIS
TRACHELCMGKAS VOLVCCINA
TREUBARIA SETIGERUM
TREUBARIA TRIAPPENDICULATA
TOTAL
FORM
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
S
*c
0.4
0.4
ALGAL
UNITS
PER ML
37
37
S
*C
0.1
0.1
0.1
0.1
0.1
ALGAL
UNITS
PER ML
89
89
89
X
177
177
S *C
1 0.1
I
I
1
1 0.1
I
1
I
1
1
1
ALGAL
UNITS
PER ML
163
X
163
X
X
X
9415
134221
125610
CD
O
-------
TECHNICAL REPORT DATA
(Please read Instructions on the reverse before completing)
1EW-W3-73-001
2.
3. RECIPIENT'S.ACCESSION'NO.
4. TITLE AND SUBTITLE
DISTRIBUTION AND IMPORTANCE OF PHYTOPLANKTON IN THE
ATCHAFALAYA BASIN
5. REPORT DATE
January 1978
6. PERFORMING ORGANIZATION CODE
7. AUTHOR(S)
S.C. Hern, W.D. Taylor, L.R. Williams, V.W. Lambou,
M.K. Morris, F.A. Morris, J.W. Hilgert
8. PERFORMING ORGANIZATION REPORT NO.
9. PERFORMING ORG "VNIZATION NAME ANO ADDRESS
Environmental Monitoring and Support Laboratory
Office of Research and Development
U.S. Environmental Protection Agency
Las Vegas, Nevada 89114
10. PROGRAM ELEMENT NO.
1BD613A
11. CONTRACT/GRANT NO.
12. SPONSORING AGENCY NAME AND ADDRESS
13. TYPE OF REPORT AND PERIOD COVERED
U.S. Environmental Protection Agency—Las Vegas, NV
Office of Research and Development
Environmental Monitoring and Support Laboratory
Las Vegas, Nevada 89114
In-house
14. SPONSORING AGENCY CODE
EPA-600/07
15. SUPPLEMENTARY NOTES
16. ABSTRACT
This report presents the species and abundance of phytoplankton in the
Atchafalaya Basin. From 86 phytoplankton samples examined, 107 genera and 287
species of algae were identified. Occurrence and dominant occurrence of phyto-
plankton genera and species are listed. The Nygaard's Trophic State Index
(Nygaard 1949), Palmer's Organic Pollution Index (Palmer 1969), as well as species
diversity and abundance indices are included. Also, study areas inside and
outside the Basin were compared and contrasted for chemical, physical and biological
characteristics. From the above data the following conclusions were made:
1) phytoplankton play a minor role in the overall productivity.of the Basin
proper due to the high concentration of suspended sediments in the water,
2) phytoplankton production was nearly an order of magnitude greater in areas
studied outside the Basin than within the Basin, and 3) diatoms and flagellates
were the dominant algal groups within the Basin while flagellates and blue-green
algae were the dominant algae groups outside the Basin proper.
7.
KEY WORDS AND DOCUMENT ANALYSIS
DESCRIPTORS
b. IDENTIFIERS/OPEN ENDED TERMS
c. COSATI Field/Group
*aquatic microbiology
lake
*phytoplankton
water quality
Atchafalaya Basin
Louisiana
Nygaard's trophic indices
Palmer's organic pollu-
tion indices
Species diversity and
abundange indices
eutropnication
06 C
08 H
13 B
ECURITY CLASS (This Report)
UNCLASSIFIED
8. DISTRIBUTION STATEMENT
RELEASE TO PUBLIC
21. NO. OF PAGES
202
i (This page)
22. PRICE
EPA Form 2220-1 (9-73)
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