U.S. ENVIRONMENTAL PROTECTION AGENCY
NATIONAL EUTROPHICATION SURVEY
WORKING PAPER SERIES
DISTRIBUTION OF PHYTOPLANKTON
IN MISSISSIPPI LAKES
WORKING PAPER NO. 635
CORVALLIS ENVIRONMENTAL RESEARCH LABORATORY - CORVALLIS, OREGON
and
ENVIRONMENTAL MONITORING & SUPPORT LABORATORY - LAS VEGAS, NEVADA
-------
DISTRIBUTION OF PHYTOPLANKTON
IN MISSISSIPPI LAKES
WORKING PAPER NO. 635
-------
DISTRIBUTION OF PHYTOPLANKTON IN MISSISSIPPI LAKES
by
Llewellyn R. Williams1, W. D. Taylor1, F. A. Hiatt2, S. C. Hern1,
J. W. Hilgert2, V. W. Lambou1, F. A. Morris2,
R. W. Thomas1, and M. K. Morris2.
iWater 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
Working Paper No. 685
National Eutrophication Survey
Office of Research and Development
U.S. Environmental Protection Agency
March 1977
-------
Table of Contents
Foreword 111
Introduction 1
Materials and Methods 3
Lake and Site Selection 3
Sample Preparation 4
Examination 5
Quality Control 5
Results 6
Nygaard's Trophic State Indices 6
Palmer's Organic Pollution Indices 8
Species Diversity and Abundance Indices 9
Species Occurrence and Abundance 11
Literature Cited 12
Appendix: Summary of Phytoplankton Data 13
-------
111
FOREWORD
The National Eutrophication Survey was initiated in 1972 in
response to an Administration commitment to investigate the nationwide
threat of accelerated eutrophication to freshwater lakes and reservoirs.
The Survey was designed to develop, in conjunction with State environmental
agencies, information on nutrient sources, concentrations, and
impact on selected freshwater lakes as a basis for formulating
comprehensive and coordinated national, regional, and State management
practices relating to point source discharge reduction and nonpoint
source pollution abatement in lake watersheds.
The Survey collected physical, chemical, and biological data
from 815 lakes and reservoirs throughout the contiguous United
States. To date, the Survey has yielded more than two million
data points. In-depth analyses are being made to advance the rationale
and data base for refinement of nutrient water quality criteria
for the Nation's freshwater lakes.
-------
INTRODUCTION
The collection and analysis of phytoplankton data were included
in the National Eutrophication Survey in an effort to determine
relationships between algal characteristics and trophic status
of individual lakes.
During spring, summer, and fall of 1973, the Survey sampled
250 lakes in 17 states. Over 700 algal species and varieties were
identified and enumerated from the 743 water samples examined.
This report presents the species and abundance of phytoplankton
in the 5 lakes sampled in the State of Mississippi (Table 1).
The Nygaard's Trophic State (Nygaard 1949), Palmer's Organic Pollution
(Palmer 1969), and species diversity and abundance indices are
also included.
-------
Table 1. Lakes Sampled 1n the State of Mississippi
STORET i LAKE NAME COUNTY
2801 Arkabutla Reservoir Desoto, Tate
2802 Enid Lake Yalo Busha, Panola
2804 Ross Barnett Reservoir Hinds, Madison, Rankln
2805 Sardls Lake Panola, Lafayette
2806 Grenada Lake Grenada, Yalo Busha
-------
MATERIALS AND METHODS
LAKE AND SITE SELECTION
Lakes and reservoirs Included 1n the Survey were selected through
discussions with State water pollution agency personnel and U.S.
Environmental Protection Agency Regional Offices (U.S. EPA 1975).
Screening and selection strongly emphasized lakes with actual or
potential accelerated eutrophication problems. As a result, the
selection was limited to lakes:
(1) Impacted by one or more municipal sewage treatment plant
outfalls either directly into the lake or by discharge to an
inlet tributary within approximately 40 kilometers of the
lake;
(2) 40 hectares or larger in size; and
(3) With a mean hydraulic retention time of at least 30 days.
Specific selection criteria were waived for some lakes of particular
State interest.
Sampling sites for a lake were selected based on available
information on lake morphometry, potential major sources of nutrient
input, and on-site judgment of the field Hmnologlst (U.S. EPA 1975).
Primary sampling sites were chosen to reflect the deepest portion of
each major basin 1n a test lake. Where many basins were present,
selection was guided by nutrient source information on hand. At each
sampling site, a depth-Integrated phytoplankton sample was taken.
Depth-integrated samples were a uniform mixture of water from the
surface to a depth of 15 feet (4.6 meters) or from the surface to the
lower limit of the photic zone representing 1 percent of the incident
light, whichever was greater. If the depth at the sampling site was
less than 15 feet (4.6 meters), the sample was taken from just off the
bottom to the surface. Normally, a lake was sampled three times in 1
year, providing information on spring, summer, and fall conditions.
-------
SAMPLE PREPARATION
Four mill litters (ml) of Ac1d-LugoTs 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 a given lake. One composite sample was put Into
storage and the other was used for the examination.
Prior to examination, the composite samples were concentrated by
the settling method. Solids were allowed to settle for at least 24
hours prior to siphoning off the supernatant. The volume of the
removed supernatant 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 remaining
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 concentrations 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 samole
material on a coverglass, heating 1n a muffle furnace at 400 C for 45
minutes, and mounting 1n Hyrax. Finally, the mounts were sealed with
clear fingernail polish.
Backup samples, 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.
-------
EXAMINATION
The phytoplankton samples were examined with the aid of binocular
compound microscopes. A preliminary examination was performed to
precisely Identify and 11st 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 1n 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, blue-green filament,
Navicula #1). Diatom slides were examined using a standard light
microscope. If greater resolution was essential to accurately
identify the diatoms, a phase-contrast microscope was used.
After the species 11st was compiled, phytoplankton were
enumerated using a Neubauer Counting Chamber with a 40x objective lens
and a lOx ocular lens. All forms within each field were counted. The
count was continued until a minimum of 100 fields had been viewed, or
until the dominant form had been observed a minimum of 100 times.
QUALITY CONTROL
Internal quality control checks on species Identifications and
counts were performed on a regular basis between project phycologists
at the rate of 7 percent. Although an Individual had primary
responsibility for analyzing a sample, taxonomlc problems were
discussed among the phycologlsts.
Additional quality control checks were performed on the Survey
samples by Dr. G. W. Prescott of the University of Montana at the rate
of 5 percent. Quality control checks were made on 75 percent of these
samples to verify species Identifications while checks were made on
the remaining 25 percent of the samples to verify genus counts.
Presently, the agreement between quality control checks for species
Identification and genus enumerations 1s satisfactory.
-------
RESULTS
The Appendix summarizes all of the phytoplankton data collected
from the State by the Survey. It 1s organized by lake, Including an
alphabetical phytoplankton species 11st with concentrations for
Individual species given by sampling date. Results from the
application of several Indices are presented (Nygaard's Trophic State,
Palmer's Organic Pollution, and species diversity and abundance).
Each lake has been assigned a four-digit STORET number. [STORET
(STOrage and RETrleval) is the U.S. EPA's computer system which
processes and maintains water quality data.] The first two digits of
the STORET number Identify the State; the last two digits Identify the
lake.
NYGAARD'S TROPHIC STATE INDICES
Five Indices devised by Nygaard (1949) were proposed under the
assumption that certain algal groups are Indicative of levels of
nutrient enrichment. These indices were calculated in order to aid in
determining the surveyed lakes' trophic status. As a general rule,
Cyanophyta, Euglenophyta, centric diatoms, and members of the
Chlorococcales are found 1n waters that are eutrophlc (rich 1n
nutrients), while desmids and many pennate diatoms generally cannot
tolerate high nutrient levels and so are found 1n ollgotrophic waters
(poor in nutrients).
In applying the indices to the Survey data, the number of taxa in
each major group was determined from the species 11st for each sample.
The ratios of these groups give numerical values which can be used as
a biological Index of water richness. The five indices and the ranges
of values established for Danish lakes by Nygaard for each trophic
state are presented 1n Table 2. The appropriate symbol, (E) eutrophlc
and (0) ollgotrophic, follows each calculated value in the tables 1n
the Appendix. A question mark (?) was entered in these tabfes when
the calculated value was within the range of both classifications.
-------
Table 2. Nygaard's Trophic State Indices
adapted from HutcMnson (1967)
Index Calculation OUgotropMc EutropMc
Myxophycean Myxophyceae
Desmldeae
Chlorophycean Chlorococcales
Desmldeae
Diatom Centric Diatoms
Pennate Diatoms
Euglenophyte Euglenophyta
Myxophyceae + Cnlorococcales
Compound Myxophyceae + Chlorococcales +
Centric Diatoms + Euglenophyta
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
Desmideae
-------
PALMER'S ORGANIC POLLUTION INDICES
Palmer (1969) analyzed reports from 165 authors and developed
algal pollution indices for use in rating water samples with high
organic pollution. Two lists of organic pollution-tolerant forms
were prepared, one containing 20 genera, the other, 20 species (Tables
3 and 4). Each form was assigned a pollution index number ranging
from 1 for moderately tolerant forms to 6 for extremely tolerant
forms. Palmer based the index numbers on occurrence records and/or
where emphasized by the authors as being especially tolerant of
organic pollution.
Table 3. Algal Genus Pollution Index (Palmer 1969)
Anacystis
AnkistrodesmuB
Ch lamydomonas
Chlorella
CloBterium
Cyclotella
Euglena
Gomphonema
Lepocinclis
Melosira
Pollution
Index
1
2
4
3
1
1
5
1
1
1
Micractinium
Naviaula
Nitzechia
Oecillatoria
Pandorina
Phacus
Phormidium
Scenedesmus
Stigeoclonium
Synedra
Pollution
Index
1
3
3
5
1
2
1
4
2
2
Table 4. Algal Species Pollution Index (Palmer 1969)
Ankistrodesmua falcatue
Arthpoapipa jenneri
Chlopella vulgaris
Cyclotella meneghiniana
Euglena gracilie
Euglena viridia
Gomphonema parvulum
Melosira variane
Naviaula aryptocephala
Nitzechia acioularis
Pollution
Index
3
2
2
2
1
6
1
2
1
1
Pollution
Index
Nitzschia palea 5
Oscillatoria chlorina 2
Osaillatoria limoaa 4
Oecillatoria princeps 1
Oscillatoria putrida. 1
Oscillatoria tenuis 4
Pandorina morwn 3
Scenedeemus quadricauda 4
Stigeoclonium tenue 3
Synedra ulna 3
-------
In analyzing a water sample, any of the 20 genera or species of
algae present 1n concentrations of 50 per ml or more are
recorded. The pollution Index numbers of the algae present are
totaled, providing a genus score and a species score. Palmer
determined that a score of 20 or more for either Index can be taken as
evidence of high organic pollution, while a score of 15 to 19 1s taken
as probable evidence of high organic pollution. Lower figures suggest
that the organic pollution of the sample 1s not high, that the sample
is not representative, or that some substance or factor Interfering
with algal persistence 1s present and active.
SPECIES DIVERSITY AND ABUNDANCE INDICES
"Information content" of biological samples 1s being used
commonly by biologists as a measure of diversity. Diversity 1n this
connection means the degree of uncertainty attached to the specific
identity of any randomly selected Individual. The greater the number
of taxa and the more equal their proportions, the greater the
uncertainty, and hence, the diversity (Plelou 1966). There are
several methods of measuring diversity, e.g., the formulas given by
Brlllouin (1962) and Shannon and Weaver (1962). The method which is
appropriate depends on the type of biological sample on hand.
Plelou (1966) classifies the types of biological samples and
gives the measure of diversity appropriate for each type. The Survey
phytoplankton samples are what she classifies as larger samples
(collections 1n Pielou's terminology) from which random subsamples can
be drawn. According to Pielou (1966), the average diversity per
individual for these types of samples can be estimated from the
Shannon-Wiener formula (Shannon and Weaver 1962):
S
H = -Z P, log¥ P.,
1=1 1 x 1
where P 1s the proportion of the 1th taxon 1n the sample, which is
calculated from n^/N; n^ 1s the number of Individuals per ml
of the 1th taxon, N is the total number of individuals per ml and S 1s
the total number of taxa.
However, Basharin (1959) and Plelou (1966) have pointed out that
H calculated from the subsample 1s a biased estimator of the sample H,
and if this bias 1s to be accounted for, we must know the total number
of taxa present in the sample since the magnitude of this bias depends
on 1t.
-------
10
Pielou (1966) suggests that 1f the number of taxa 1n the
subsample falls only slightly short of the number 1n the larger
sample, no appreciable error will result 1n 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 Survey
samples undoubtedly contain a fair number of rare phytoplankton taxa
which were not encountered.
In the Shannon-Wiener formula, an Increase 1n the number of taxa
and/or an Increase 1n 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 1n 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 1n number per ml and since logarithms to the base
2 were used 1n our calculations, H is expressed 1n 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 1n the
calculations since at least one Individual of the taxon must have been
present in the collection.
A Survey sample for a given lake represents a composite of all
phytoplankton collected at different sampling sites on a lake during a
given sampling period. Since the number of samples (M) making up a
composite 1s a function of both the complexity of the lake sampled and
its size, it should affect the richness of taxa component of the
diversity of our phytoplankton collections. The maximum diversity
(MaxH) (i.e., when the Individuals are distributed among the taxa as
evenly as possible) was estimated from Iog2 S, the total diversity (D)
was calculated from HN, and the evenness component of diversity (J)
was estimated from H/MaxH (Pielou 1966). Also given 1n 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 1n 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 1n the sample) instead of in "bits", I.e., 1n 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, 1t can
be used to compare different samples, independent of the number of
-------
11
taxa 1n each. The diversity 1n 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 1n sits
is equal to logs S or 1. Therefore diversity 1n sits per Individual
is numerically equivalent to J, the evenness component for the Shannon-
Wiener formula.
SPECIES OCCURRENCE AND ABUNDANCE
The alphabetic phytoplankton species 11st for each lake,
presented 1n the Appendix, gives the concentrations of Individual
species by sampling date. Concentrations are 1n cells, colonies, or
filaments (CEL, COL, FIL) per ml. An "X" after a species name
indicates the presence of the species on that date 1n such a low
concentration that it did not show up in the count. A blank space
indicates that the organism was not found 1n the sample collected on
that date. Column S is used to designate the examiner's subjective
opinion of the five dominant taxa 1n a sample, based upon relative
size and concentration of the organism. The percent column (%C]
presents, by abundance, the percentage composition of each taxon.
-------
12
LITERATURE CITED
Basharin, G. P. 1959. On a statistical estimate for the entrophy of a
sequence of Independent random variables, pp. 333-336. In N.
Artin (ed.), Theory of Probability and Its Applications
(translation of "Teorlya Veroyatnosel 1 ee Premenenlya") 4.
Society for Industrial and Applied Mathematics, Philadelphia.
Brillouln, L. 1962. Science and Information Theory (2nd ed.).
Academic Press, New York. 351 pp.
Hutchlnson, G. E. 1967. A Treatise on Limnology. II. Introduction
to Lake Biology and the Llmnoplankton. John Wiley and Sons,
Inc., New York. 1,115 pp.
Nygaard, G. 1949. Hydroblologlcal studies of some Danish ponds and
lakes. II. (K danske Vidensk. Selsk.) B1ol. Sc1. 7:293.
Palmer, C. M. 1969. A composite rating of algae tolerating organic
pollution. 0. Phycol. 5:78-82,
Plelou, E. C. 1966. The measurement of diversity 1n different types
of biological collections. J. Theor. B1ol. 13:131-144.
Prescott, G. W. 1970. How to Know the Freshwater Algae. William C.
Brown Company, Dubuque. 348 pp.
Sager, P. E. and A. D. Hasler. 1969. Species diversity 1n laucustrlne
phytoplankton. I. The components of the Index of diversity from
Shannon's formula. Amer. Natur. 103(929): 51-59
Shannon, C. E. and W. Weaver. 1962. The Mathematical Theory of
Communication. University of Illinois Press, Urbana. 117 pp.
U.S. Environmental Protection Agency. 1975. National Eutrophicatlon
Survey Methods 1973-1976. Working Paper No. 175. Environmental
Monitoring and Support Laboratory. Las Vegas, Nevada, and
CorvalUs Environmental Research Laboratory, CorvalUs, Oregon.
91 PP.
Zand, S. M. 1976. Indexes associated with Information theory 1n water
quality. Journal WPCF. 48(8): 2026-2031.
-------
13
APPENDIX
SUMMARY OF PHYTOPLANKTON DATA
The Appendix format was computer generated. Because 1t was only
possible to use upper case letters 1n 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 uncertainty. 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.
-------
LAKE NAME: ARKA6UTLA R'ES.
STOPET NUMBER: 2801
NYGAARD TROPHIC STATE INDICES
DATE 06 13 73 08 28 73 11 01 73
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
02/0 E
01/0 E
1.33 E
02/0 E
09/0 E
03/0 E
02/0 E
1.20 E
5.00 E
16/0 E
3.00 E
1.00 E
1.25 E
3.00 E
12,0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 06 13 73 08 28 73 11 01 73
GENUS
SPECIES
06
00
02
00
06
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INDIVIDUALS/TAXA
NUMBER/ML OF MOST ABUNDANT TAXON
06 13 73 08 28 73 11 01 73
H
S
M
MAXH
D
N
J
L
K
2.82
16.00
3.00
A. 00
2538. CO
900.00
0.71
56.25
232.00
2.46
24.00
3.00
4.53
2988.90
1215.00
0.54
50.63
633.00
3.27
17.00
3.00
4.09
1988.16
608.00
0.80
35.76
152.00
-------
LAKE NAME: ARKABUTLA RES.
STORET NUMBER: 2801
CCNTINUED
06 13 73
08 28 73
11 01 73
TAXA
ANABAENA
CENTRIC DIATOM
CLCSTERIUM #1
CRYPTOMONAS
CRYPTOMONAS EROSA
CRYPTCMGNAS REFLEXA
CYANOPHYTAN FILAMENT
CYCLCTELLA MENEGHINIANA
CYCLGTELLA SPP.
CYCLOTELLA STELLIGERA
CYMBELLA
DACTYL CCCCCOPSIS
DACTYLOCOCCOPSIS IRREGULARIS
EUGLENA #1
EUGLENA ACUS
EUGLENA GRACILIS
FLAGELLATE #1
FLAGELLATE #9
GLENODINIUM OCULATUM
GYMNCDINIUM ?
GYMNODINIUM ORDINATUM
LYNGBYA
KALLCMCNAS ACAROIDES
MELOSIRA DISTANS
MELOSIPA GRANULATA
MELOSIRA GRANULATA
V. ANGUSTISSIMA
MICRCCYSTIS INCERTA
OSCILLATORIA LIMNETICA
PENNATE DIATOM
PHACUS CAUDATUS
PHACUS DENNISII ?
FORM
FIL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
COL
FIL
CEL
CEL
CEL
S
2
I
3
5
4
*C
3.21
6.4
25.8
12.9
11.3
3.2
6.4
24.2
ALGAL
UNITS
PER ML
29
58
X
232
116
X
102
X
X
29
58
218
S
3
5
1
4
*C
6.3
6.3
6.3
6.3
2.1
52.1
6.3
ALGAL
UNITS
PER ML
76
X
76
X
X
X
X
76
X
76
25
X
633
76
X
X
X
X
S
2
5
1
4
3
*C
11.0
2.8
13.8
25.0
2.8
2.8
13.8
5.6
5.6
2.8
8.4
ALGAL
UNITS
PER ML
67
17
84
X
152
X
17
17
84
34
34
17
51
X
-------
LAKE NAME: ARKABUTLA RES.
STCRET NUMBER: 2801
CONTINUED
06 13 73
08 28 73
11 01 73
TAXA
PTERCMONAS
FTERCMCNAS ANGULCSA
SCENEDESMUS OENTICULATUS
SCENEDESMUS QUAORTCAUDA
TETRAEORON MINIMUM
V. SCROBICULATUM
TRACHELOMONAS PULCHELLA
TRACHELCMONAS URCEOLJTA
TRACHELOMONAS VOLVCCINA
TREUBARIA TRIAPPENCICULATA
FORM
CEL"
CEL
COL
CCL
CEL
CEL
CEL
CEL
CEL
s
%c
6.4
ALGAL
UNITS
PER ML
X
X
58
X
S
2
%C
4.2
8.3
2.1
ALGAL
UNITS
PEP ML
X
51
X
101
25
X
S
*c
2.8
2.8
ALGAL
UNITS
PER ML
17
17
X
TOTAL
900
1215
608
CT>
-------
LAKE NAME: ENID LAKE
STORET NUMBER: 2802
NYGAARO TROPHIC STATE INDICES
DATE 06 12 73 06 27 73 11 01 73
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
3.00 E
1.00 E
0.50 E
4.00 E
10. 0 E
1. 00 E
1.67 E
1.37 E
0.50 E
7.33 E
04/0 E
03/0 E
0.43 E
0.50 E
13/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 06 12 73 08 27 73 11 01 73
GENUS
SPECIES
01
00
04
02
02
00
SPECIES DIVERSITY AND ABUNDANCE INDICES
DATE 06 12 73 08 27 73 11 01 73
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER CF SAMPLES CCMPOSITED
MAXIMUM DIVERSITY MAXH
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INDIVIDUALS/TAXA
NUMBER/ML OF MOST ABUNDANT TAXON
H
S
M
;H
D
N
J
L
K
3.14
16.00
3.00
4.00
1466.38
467.00
0.79
29.19
116.00
2.79
37.00
3.00
5.21
6439.32
2308.00
0.54
62.38
1124.00
2.23
23.00
3.00
4.52
5018.28
2201.00
0.50
95.70
1024.00
-------
LAKE NAME: ENID LAKE
STCPET NUMBER: 2802
CONTINUED
06 12 73
08 27 73
11 01 73
TAXA
ANABAENA
ANKISTPODESMUS
APHANIZCHENCN ? FLOS-AQUAE
APHANIZCfENON FLCS-AGUAE
CLOSTERIUM
COELASTRUM PICROPORUM
CRUCIGENIA TETRAPEDIA
CPYPTQMCNAS
CRYPTOMCNAS OVATA
CRYPTOMONAS REFLEXA
CYCLOTELLA MENEGHNIANA
CYCLCTELLA STELLIGER*
CYMBELLA
CYST
DACTYLOCOCCOPSIS IRREGULARIS
EUASTRUM DENTICULATUN
EUDORINA ELEGANS
EUGLENA ? #2
EUGLENA (HI
EUGLENA #3
EUGLENA 04
EUGLENA ACUS
FLAGELLATE #1
LYNGBYA
MALLCMCNAS ACAROIDES
MELOSIRA DISTANS
MELOSIRA GRANULATA
NELOSIPA ITALICA
MERISMOPEDIA TENUISSIMA
KICRCCYSTIS INCERTA
NAVICULA #1
NAVICULA ANGLICA
V. SUBSALSA
FORM
FIT
CEL
FIL
FIL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
ALGAL
UNITS
S %C PEP ML
3
4
5
2
1
13.9
5.6
5.6
8.4
8.4
16.7
24.8
X
65
X
26
26
39
X
X
39
78
X
116
ALGAL
UNITS
S *C PER ML
1
2
3
4
2.0
13.8
0.6
9.2
1.3
3.3
0.6
48.7
3.9
3.3
0.6
46
319
15
X
213
30
76
X
X
X
15
X
X
1124
91
76
15
X
ALGAL
UNITS
S *C PER ML
3
5
2
I
2.3
1.2
8.1
4.6
2.3
46.5
19.8
1.2
X
51
26
179
X
102
X
51
1024
435
26
X
-------
LAKE NAME: ENID LAKE
STCRET NUMBER: 2802
CONTINUED
06 12 73
08 27 73
11 01 73
TAXA
NITZSCHIA
NITZSCHIA #1
NITZSCHIA TRYBLICNELLA ?
CFHIOCYTIUM CAPITATUM
OSCILLATORIA LIMNETICA
PAKDORINA PROTUBERANS
PEDIASTRUM DUPLEX
V. GRACILIMUM
PEDIASTRUM DUPLEX
V. RETICULATUM
PENNATE DIATOMS
PERIDINIUM INCONSPICUUM
PERIDINIUM PENARCIFORME
PHACUS
PHACUS GLABER
PHACUS LCNGICAUDA
PHACUS PLEURONECTES
PINNULARIA BRAUNII
V. AMPHICEPHALA
PINNULARIA SUBCAPITATA
V. PAUCISTRIATA
PTERCMCNAS ANGULCSA
SCENEDESMUS DENT1CULATUS
SCENEDESMUS QUADRICAUDA
STAURASTRUM TETRACERUM
SURIRELLA
SYNEDRA
SYNEDRA #1
SYNEDRA ACUS
TETRAEDRON REGULARE
V. INCUS
TRACHELCMONAS
FORM
CEL
CEL
CEL
CEL
FIL
COL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
S
?C
2.8
2.8
5.6
ALGAL
UNITS
PER ML
13
•
13
26
S
5
%C
0.6
0.6
0.6
2.0
0.6
2.6
3.3
ALGAL
UNITS
PER ML
15
15
X
15
46
X
X
X
X
X
15
X
61
76
X
X
S
4
*C
13.9
ALGAL
UNITS
PER ML
X
X
X
X
307
X
X
X
X
X
X
-------
LAKE NAME: ENID LAKE
STORET NUMBER: 2802
CONTINUED
TAXA
TRACHELCMONAS
TRACHELOMONAS
TRAOELOMONAS
TRACHELOMONAS
06 12 73
08 27 73
11 01 73
INTERMEDIA
PULCHELLA
URCEOLATA
VCLVCCINA
FORM
clt "
CEL
CEL
CEL
S %C
1
I 5.6
1
1
ALGAL
UNITS
PER ML
1
1 26
1
1
ALGAL
UNITS
S *C PER ML
1 1.3| 30
1 1
I 0.6| 15
1 1 X
1
1
IS
1 1
1 1
1 1
1 1
ALGAL
UNITS
*C PER ML
1
1
1
1
TOTAL
467
2308
2201
-------
LAKE NAME: ROSS BURNETT RES.
STOPET NUMBER: 2804
NYGAARD TROPHIC STATE INDICES
DATE 06 14 73 08 27 73 11 02 73
MYXOPHYCEAN 06/0 F 4.00 E 2.25 E
CHLOROPHYCEAN 07/0 E 3.50 E 3.75 E
EUGLENOPHYTE 0.38 E 0.33 E 0.12 ?
DIATOM 6.00 E 0.60 E 0.50 E
COMPOUND 24/0 E 11.5 E 7.75 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 06 14 73 08 27 73 11 02 73
GENUS
SPECIES
01
00
07
00
22
04
ro
SPECIES DIVERSITY AND ABUNDANCE INDICES
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITE?
MAXIMUM DIVERSITY
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INDIVIDUALS/TAXA
NUMBER/ML OF MOST ABUNDANT TAXON
DATE
06 14 73 08 27 73 11 02 73
H
S
M
MAXH
D
N
J
L
K
2.21
32.00
4.00
5.00
2934.88
1328.00
0.44
41.50
865.00
2.42
36.00
4.00
5.17
14435.30
5965.00
0.47
165.69
2419.00
4.13
54.00
4.00
5.75
33147.38
8026.00
0.72
148.63
1569.00
-------
LAKE NAME: ROSS 8ARNETT RES
STORET NUMBER: 2804
CONTINUED
06
73
08 27 73
11 02 73
TAXA
ANABAENA
ANABAENA ? #2
ANABAENA #1
ANABAENCPSIS
ANKISTRODESMUS
ANKISTPODESMUS ?
APHANIZCMENCN FLCS-AQUAE
ATTHEYA
CHLAPYDCMCNAS
CHLCROGCNIUK
CHLOFOPHYTAN COCCOID CELL
COELASTPUM MICROPORUM
CCELASTRUM RETICULATUM
COSMARIUM
CRUCIGENIA
CRUCIGENIA
CRYPTOMONAS
CRYFTCMCNAS
CRYPTOMONAS
V. REFLEXA
CRYPTOMONAS OVATA
CRYPTOMONAS REFLEXA ?
CYCLOTELLA MENEGKINIANA
CYCLCTELLA SPP.
CYCLOTELLA STELLIGERA
CYMBELLA
DACTYLOCCCCOPSIS
DINOBRYON BAVARICUM
EPIThEMIA
EUASTRUM
EUGLENA
EUGLENA #1
FORM
FIL
FIL
FIL
CEL
CEL
FENES^RATA
TETRAPEDIA
EROS A
EROSA
CEL
CEL
CEL
CEL
COL
COL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
s
5
3
*C
1.4
1.4
1.4
1.4
1.4
4.0
ALGAL
UNITS
PER ML
18
X
18
18
18
18
53
X
X
S
4
*C
3.3
0.3
0.3
0.5
0.5
3.3
ALGAL
UNITS
PER ML
X
194
16
16
X
32
32
194
X
X
S
1
2
4
35C
3.0
0.6
0.3
0.5
0.6
3.5
5.3
19.5
2.11
0.3|
0.2|
ALGAL
UNITS
PER ML
244
X
51
X
X
26
39
51
283
X
X
424
X
1569
167
X
26
13
ro
ro
-------
LAKE NAME: ROSS EARNETT RES,
STORET NUMBER: 2904
CONTINUED
06
73
08 27 73
11 02 73
TAXA
EUGLENA #2
EUGLENA GRACILIS
FLAGELLATE #1
FLAGELLATE #7
FRANCEIA DROESCHERI
FRANCEIA QUACRISETA
GLENODINIUM OCULATUM
GOLENKINIA
GOLENKIMA RAOIATA
GOMPHONEKA ANGUSTATUM
GYMNODINIUM
GYMNODINIUN OROINATUM
GYROSIGMA ?
KIRCHNERIELLA
KIRCHNERIELLA CCNTOPTA
LYNGBYA
LYNGBYA LIMNET1CA
MALLCMCNAS
KALLCMCNAS ACAROIOES
MELOSIRA
MELOSIRA OISTANS
MELOSIPA GRANULATA
MELOSIPA GRANULATA
V. ANGLSTISSIMA
MELOSIRA ITAL1CA
MERISMOPEDIA TENUISSIMA
MICROCYSTIS
MICRCCYSTIS
MICROCYSTIS
NAVICULA
NAVICULA #1
NAVICULA #2
AERUGTNOSA
INCERTA
FORM
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
COL
COL
CEL
CEL
CEL
S
1
*C
4.0
1.4
5.3
65.1
ALGAL
UNITS
PER ML
53
18
X
71
865
X
X
X
Q
"
S
3
5
*C
0.8
0.3
0.8
6.8
3.51
0.3
2.4
0.3
ALGAL
UNITS
PER ML
48
X
X
X
16
X
48
X
X
403
210
16
145
16
X
1 X
1 x
S
3
5
*C
9.0
-
0.3
0.5
0.3
7.1
4.0
0.2
12.0
1.9
4.8
9.1
1.9
ALGAL
UNITS
PER ML
720
26
39
26
566
322
13
X
965
154
386
X
733
154
ro
CO
-------
LAKE NAME: ROSS BARNETT RES,
STORE! NUMBER: 2804
CONTINUED
06 14 73
08 27 73
11 02 73
TAXA
NITZSCHIA
NITZSCHIA
NITZSCHIA
NITZSCHIA
NITZSCHIA
ACICULARIS
HOLS AT 1C A
PALEA
SPP.
OSCILLATORIA
OSCILLATORIA LIMNETICA
PANDORINA PROTUBERANS
PEDIASTPUM
PEDIASTRUM DUPLEX
V. CLATHRATUM
PEDIASTPUM DUPLEX
V. RETICULATUM
PERIDINIUM INCONSPICUUM
PHACUS CURVICAUDA
RAPHIDIOPSIS ? CURVATA
SCENEDESMUS ABUNDANS
SCENEDESMUS
SCENEDESMUS
SCENEDESMUS
SCENEDESMUS
SCENEDESMUS
SPHAEROCYSTIS
SPIRULINA
STAURASTRUM #1
STAURASTRUM #2
STEPHANODISCUS
SURIRELLA
SYNEDRA
SYNURA ?
TETRAEDPCN CAUDATUM
V. LCNGISPINUM
BICALDATUS
BIJUCA
DENTICULATUS
DIMORPHUS
QUADRICAUDA
SCHROETERI
FORM
CEL"
CEL
CEL
CEL
CEL
FIL
FIL
COL
COL
COL
COL
CEL
CEL
FIL
COL
COL
COL
COL
COL
COL
COL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
1C
1.4
1.4
1.4
2.6
5.3
ALGAL
UNITS
PER ML
X
18
18
X
18
X
35
X
X
X
71
X
S
1
2
1C
0.5
40.6
0.3
0.5
34.1
0.3
ALGAL
UNITS
PER ML
32
2419
16
32
X
2032
16
X
S
*C
3.2
1.0
0.3
0.2
0.6
1.3
1.0
0.3
1.9
0.2
0.6
0.2
0.6
ALGAL
UNITS
PER ML
X
X
X
257
77
26
X
13
51
142
77
26
154
13
X
51
X
13
51
ro
-------
LAKE NAME: ROSS EARNETT RSS,
STCRET NUMBER: 2804
CONTINUED
TAXA
TETRAEDRON MUTICUM
TRACHELCMCNAS
TRACHELCMONAS INTERMEDIA
TRAOELCMONAS PULCHELLA
TRACHELCMONAS URCEOLATA
TRACHELCMONAS VOLVOCINA
TOTAL
FORM
C?T
CEL
CEL
CEL
CEL
CEL
06
73
08 27 73
11 02 73
ALGAL
UNITS
S ?C PER ML
1 1
1 1
1 1 X
1 !
4| 1.4| 18
1 1 X
1328
S
*C
0.5
ALGAL
UNITS
PEP ML
32
5965
S
ALGAL
UNITS
*C PER ML
0.3| 26
1
1
0.3| 26
1
0.3| 26
8026
ro
en
-------
LAKE NAME: SARDIS LAKE
STOPET NUMBER: 2805
NYGAARD TROPHIC STATE INDICES
DATE 06 13 73 08 27 73 11 01 73
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATCM
CCMPCUND
02/0 E
01/0 E
0.33 E
1.33 E
08/0 E
2.00 E
0/01 0
1.50 E
3.00 E
8.00 E
2.50 E
1.50 E
0.25 E
1.25 E
7.50 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 06 13 73 08 27 73 11 01 73
GENUS
SPECIES
01
00
01
00
04
00
ro
SPECIES DIVERSITY AND ABUNDANCE INDICES
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER OF SAMPLES COMPOSITED
MAXIMUM DIVERSITY
TOTAL DIVERSITY
TCTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
MEAN NUMBER OF INDIVIOUALS/TAXA
NUMBER/ML CF MOST ABUNDANT TAXON
DATE
06 13 73 08 27 73 11 01 73
H
S
M
MAXH
D
N
J
L
K
1.05
16.00
4.00
4.00
3535.35
3367.00
0.26
210.44
2782.00
1.33
15.00
4.00
3.91
2276.96
1712.00
0.34
114.13
1289.00
1.79
29.00
4.00
4.86
4390.87
2453.00
0.37
84.59
1699.00
-------
LAKE NAME: SARDIS LAKE
STCRET NUMBER: 2805
CCNTINUED
06 13 73
08 27 73
11 01 73
TAXA
ANABAENA
ANABAENA PLANCTONTCA
ANKISTRODESMUS FALCATUS
CENTRIC DIATOM
CERATIUF HIRUNDINELLA
CHLOPOPHYTAN COLONY
CLCSTERIUM
CRYPTOMONAS
CRYPTOMCNAS
CRYPTOMONAS
CYANOPHYTAN
CYANOPHYTAN
#1
REFLEXA
COCCOID CELLED COLONY
FILAMENT
CYCLOTELLA STELLIGERA
CYMBELLA
DINOBRYCN BAVARICUM
EUASTRUM
EUGLENA
EUGLENA #1
FLAGELLATE #1
FLAGELLATE #2
FLAGELLATE #9
FLAGELLATES
LAGERHEINIA
LEPOCINeLI?
LYNGBYA LIMNETICA 1
KALLCMCNAS
MELOSIRA OISTANS
NELOSIPA GRANULATA
MELCSIRA GRANULATA
V. ANGLSTISSIMA
PELOSIRA ITALICA
NAVICULA
FORM
FIL
FIL
CEL
CEL
CEL
COL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
S
2
3
4
1
%C
0.9
0.4
6.1
5.6
2.6
82.6
ALGAL
UNITS
PER ML
X
X
29
X
15
X
205
X
X
'
190
88
2782
S
3
4
1
5
2
*C
5.9
4.7
75.3
2.3
9.4
ALGAL
UNITS
PER ML
X
X
101
81
.
X
1289
40
X
161
S
3
5
2
4
1
*C
4.9
0.7
6.3
0.7
0.7
69.3
1.4
4.2
7.7
ALGAL
UNITS
PER ML
X
X
X
X
120
X
X
X
17
154
17
X
17
X
X
1699
X
X
34
103
189
X
X
-------
LAKE NAME: SARDIS LAKE
STCRET NUMBER: 2805
CONTINUED
06 13 73
08 27 73
11 01 73
TAXA
CSCILLATOPIA LIMMETICA
PEDIASTRUM DUPLEX
V. RETICULATUM ?
PENNJTE DIATOMS
PERIDINIUM INCONSPICUUM
PERIDINIUM UMBONATUM ?
PHACUS ORBTCULARIS ?
RHIZOSOLENIA
SCHRCEDERIA SETIGERA
STEPHANODISCUS
SYNE OR A
SYNEDRA #1
TABELLARIA FEME STRATA
TRACHELCMONAS DUBIA ?
TCTAL
FORM
^m^^-^^m
FIL
COL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
s
5
%C
1.3
0.4
ALGAL
UNITS
PER ML
X
43
15
X
3367
1
IS
*c
2.3
ALGAL
UNITS
PER ML
X
X
X
X
40
X
1712
S
ZC
0.7
0.7
2.8
ALGAL
UNITS
PER ML
X
X
17
X
17
69
2453
ro
CO
-------
LAKE NAME: GRENADA LAKE
STCRET NUMBER: 2806
NYGAARD TRCPHIC STATE INDICES
DATE 06 14 73 08 29 73 11 02 73
MYXOPHYCEAN
CHLOROPHYCEAN
EUGLENOPHYTE
DIATOM
COMPOUND
02/0 E
0/0 0
0/02 ?
1.50 E
05/0 E
5.00 E
4.00 E
0.56 E
2.50 E
19.0 E
06/0 E
0/0 0
0.93 E
2.00 E
17/0 E
PALMER'S ORGANIC POLLUTION INDICES
DATE 06 14 73 08 29 73 11 02 73
GENUS
SPECIES
01
00
01
00
01
00
ro
SPECIES DIVERSITY AND ABUNDANCE INDICES
AVERAGE DIVERSITY
NUMBER OF TAXA
NUMBER QF SAMPLES COMPOSITED
MAXIMUM DIVERSITY
TOTAL DIVERSITY
TOTAL NUMBER OF INDIVIDUALS/ML
EVENESS COMPONENT
OF INDIVIDUALS/TAXA
MOST ABUNDANT TAXCN
DATE
MEAN NUMBER
NUMBER/ML OF
06 14 73 08 29 73 11 02 73
H
S
M
MAXH
0
N
J
L
K
1.95
9.00
3.00
3.17
2591.55
1329.00
0.62
147.67
772.00
2.77
28.00
3.00
4.81
1282.51
463.00
0.58
16.54
141.00
1.52
27.00
3.00
4.75
3734.64
2457.00
0.32
91.00
1796.00
-------
LAKE NAME: GRENACA LAKE
STCPET NUMBER: 2805
CONTINUED
06 14 73
08 28 73
11 02 73
TAXA
ANABAENA #2
ANABAEN/ PLANCTONICA
ANKI STRODE SMUS
CRYPTOMONAS
CPYPTQMCNAS OVATA
CYCLOTELLA MENEGHINIANA
CYCLOTELLA STELL1GERA
CYMBELLA
DINCBRYON BAVARICUM
DINOFLAGELLATE CYST
EUGLENA #1
EUGLENA GRACIL1S
EUGLENA CXYURIS
FLAGELLATE #1
GLENODINIUM OCULATUM ?
GLENOOINIUK PENAPOIFORME
GYMNODINIUM ORDINATUH
KIRCHNERIELLA CCNTOPTA
LYNGBYA
HALLCMCNAS ACAROIOES
MELOSIRA
#4
OISTANS
GRANULATA
GRANULATA
V. ANGUSTISSIMA
MELOSIRA ITALICA
MERISMOPEDIA TENUISSIMA
PICPOCYSTIS AERUCINOSA
NTTZSCHIA ?
NITZSCHIA ACICULARIS
OSCILLATORIA
fELOSIRA
MELOSIRA
PELOSIPA
MELOSIRA
FORM
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
FIL
CEL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
FIL
s
~5~
11
3
4
2
*C
1 4.2
15.91
0.9
11.4
' .
3.5
4.2
58.1
ALGAL
UNITS
PER ML
1 56
211
12
X
152
47
56
772
S
3
2
1
4
5
?C
~~2l2~
13.2
2.2
26.1
2.2
4.3
30.5
6.5
8.6
ALGAL
UNITS
PER ML
_, --
X
X
61
X
10
X
X
X
121
X
10
20
141
30
X
40
X
X
S
^
3
5
2
1
?C
"oTs
2.0
0.4
0.8
0.8
0.8
0.4
0.4
0.4
15.8
73.1
0.4
1.6
0.4
ALGAL
UNITS
PER ML
19~
X
X
49
10
19
X
19
X
19
10
10
X
X
10
388
1796
10
X
39
10
-------
LAKE NAME: GRENACA LAKE
STCRET NUMBER: 2806
CONTINUED
06 14 73
08 28
11 02 73
TAXA
OSCILLATORIA LIMCSA
PANDCRIKA NCRUM
PENNATE DIATOM
PENN/TE DIATOMS
PHACUS CAUCATUS
PHACLS SUECICUS ?
PINNULARIA BRAUNII
V. AMPHICEPHALA
PTERCMONAS
SCENEDESPUS DENTICULATUS
V. LINEARIS
SPHAEROCYSTIS SCHROETERI
STAURASTRUM LEPTCCLADUM
TRACHELOMONAS INTERMEDIA
TRACHELCMONAS PULCHELLA
TRACHELCMONAS URCEOLATA
TRACHELCMONAS VOLVOCINA
FORM
FIL
COL
CEL
CEL
CEL
CEL
CEL
CEL
COL
COL
CEL
CEL
CEL
CEL
CEL
S
%C
1.7
ALGAL
UNITS
PEP ML
23
-
'
S
*C
2.2
2.2
ALGAL
UNITS
PER ML
X
X
X
10
X
X
X
X
10
S
?C
0.4
0.8
0.4
0.4
ALGAL
UNITS
PEP ML
10
19
X
10
X
10
TOTAL
1329
463
2457
------- |