May 2

In this issue

EPA Updates	P.1

News	P.2

HABs Advisories	P.3

Useful Resources	P.3

Upcoming Events	P.3

Recenty Published P.4
Articles

Mention of trade names, products,
or services in this newsletter does

not convey and should not be
interpreted as conveying official
EPA endorsement, approval, or
recommendation for use.

More HABs information is available on
EPA's

CvanoHABs in Water Bodies website

EPA Updates!

HABs News - Research - Resources - Tools

Getting Ready: What To
Do Before, During, and
After a CyanoHAB

EPA's Cyanotoxins Preparedness and Response Toolkit (CPRT)
is an online tool containing resources that drinking water systems
and waterbody managers can use to be prepared before a
cyanoHAB event, and to respond to cyanotoxins in drinking water
and/or cyanobacteria and their toxins in recreational waters. The
CPRT includes:

•	Cyanobacteria/Cyanotoxins Management Plan template,
including worksheets and checklists to plan before and during
a bloom event;

•	Frequently Asked Questions on cyanoHABs, Drinking Water
Health Advisories, and EPA's Recommended Recreational
Water Quality Criteria or Swimming Advisories for
Microcystes and Cylindrospermopsin;

•	Links to communication tools for effective risk
communication during cyanotoxin events;

•	CyanoHABs incident response questionnaire to use when a
cyanotoxins event is suspected or confirmed; and

•	Post-incident technical support questionnaire to evaluate the
effectiveness of the response.

The resources in the toolkit can be filled out electronically,
downloaded, and shared.

The CPRT is available to download on EPA's CPRT webpage


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NEWS ON HABs

Cyanobacterial Blooms and Associated
Illnesses: A Clinician Training Module
for Physicians and Healthcare
Providers

The Association of State and Territorial Health Officials (ASTHO) recently posted online a clinician
toolbox intended for use by health agency staff when providing training about cyanobacterial
blooms to health care providers. The training module is aimed to help clinicians recognize signs and
symptoms associated with cyanobacterial bloom-associated illnesses; describe how to diagnose
cyanobacterial bloom-associated illnesses, including cyanotoxin exposures; know where to find
cyanobacterial bloom advisories; and explain the importance of reporting cyanobacterial bloom-
associated illnesses to the state health agency.

The ITRC guidance includes useful interactive
cyanobacterial blooms:

Monitoring Tool: Provides monitoring
methods for cyanobacteria and cyanotoxins

ITRC's Strategies for Preventing and
Managing Harmful Cyanobacterial
Blooms interactive Tools

tools for monitoring and managing

Management Criteria Tool: Helps evaluate in-
take management strategies that prevent
future HCBs or intervene in active blooms.

Select the criteria that describes your needs, situation and/or water body:

Strategy Type

Waterbody Type

Type of HCB

a

Intervention

a

Pond

~

Planktonic

~

Prevention

~

Lake or Reservoir

~

Benthic





~

River





Management Strategy

Documented Effectiveness

Depth

Surface Area

Trophic State

Turbidity

Ar.iriifiratiop

Planktonic - Limited; Benthic -
Umited

Shallow

Small

Any Trophic
Status

Generally
Clear

mechanical mixers

Planktonic - Substantial;
Benthic - Not Applicable

Deep

Small or
Large

Any Trophic
Status

Clear to
Turbid

Barlev and rice straw

Planktonic - Substantial;
Benthic - Limited

Shallow or
Deep

Small or
Large

Any Trophic
Status

Clear to
Turbid

flocculation

Planktonic - Substantial;
Benthic - Umited

Shallow or
Deep

Small or
Large

Any Trophic
Status

Clear to
Turbid

CoDoer aloaecides

Planktonic • Substantial;
Benthic - Substantial

Shallow or
Deep

Small or
Large

Any Trophic
Status

Clear to
Turbid

Dredging

Planktonic - Limited; Benthic -
Limited

Shallow or
Deep

Small or
Large

Any Trophic
Status

Clear to
Turbid

Floating wetlands

Planktonic - Limited; Benthic -
Limited

Shallow

Small or
Large

Eutrophic

Clear to
Turbid

Food web manioulation

Planktonic • Substantial;
Benthic - No Available Data

Shallow or
Deep

Small or
Large

Any Trophic
Status

Clear to
Turbid

Hrt.ir.hm*,

Planktonic - Substantial;
Benthic - Umited

Shallow

Small or
Large

Eutrophic

Clear to
Turbid

Hydrodynamic cavitation

Planktonic - Emerging; Benthic
- No Available-

Shallow

Small

Any Trophic
Status

Clear to
Turbid

2


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Reported Blooms, Beach Closures, and Health
Advisories* - April 2022

*lncludes blooms, cautions, warnings, public health advisories, closings, and detections over state
thresholds due to the presence of algae and/or toxins. This is not a comprehensive list; not all blooms have
been reported and/or not all lakes are actively monitored.

Go to EPA's interactive Tracking CyanoHABs Story Mar to access the data underlying the map points and for
more information.











Seattle

o



- " "Lpke
Superior

Montreal

o

Toronto



~ /

UNITED

	Detroit Boston

Chicago o o

^ Nevi%ort<



. ! If
3n ffanctsco

S TAT|S

St Louis



¦T v,





~
~

Bloom Los Angeles

Advisory

Dallas

Atlanta

~

Caution





~
~
~

~

Warning
Danger
Closing
Watch

Houston

>> o
Monterrey

•1

~ Miami

/ / 0

Click the state name to see the reported blooms for the month of April 2022:

California (9): Florida (17); Kansas (1); New Jersey (2); Oregon (1); Rhode Island (2); South
Carolina (2)

Upcoming Virtual Events

12th International Conference on Toxic Cyanobacteria
May 22-27, 2022 in Toledo, Ohio

Benthic HABs Discussion Group Webinar
June 1, 2022 from 12:30pm - 2:00pm PDT

Pathogens and Natural Toxins e-Conference
July 1- August 31, 2022

GlobalHAB symposium on automated in situ
observations of plankton
August 22-26, 2022

U.S. Symposium on Harmful Algae
October 23-28, 2022 in Albany, NY

Additional Useful
Resources

Guide for Public
Health Response
to Cyanobacteria!
Harmful Algae in

Recreational
Freshwater in

Texas

3


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Recently Published Articles*

Septic system-groundwater-surface water couplings in waterfront communities contribute to
harmful algal blooms in Southwest Florida

Rachel A. Brewton, Lisa B. Kreiger, Kevin N. Tyre, Diana Baladi, Lynn E. Wilking, Laura W. Herren,
Brian E. Lapointe, Science of The Total Environment, 2022, 155319.

Genomic insights into the biosynthesis and physiology of the cyanobacterial neurotoxin 3-N-
methyl-2,3-diaminopropanoic acid (BMAA)

Maria Jose Q. Mantas, Peter B. Nunn, Geoffrey A. Codd, Daniel Barker, Phytochemistry, Volume
200, 2022,113198.

A critical review on the interaction of iron-based nanoparticles with blue-green algae and their
metabolites: From mechanisms to applications

Yangyang Yang, Xiulei Fan, Jiankun Zhang, Shuyun Qiao, Xun Wang, Xueyang Zhang, Lingzhan Miao,
Jun Hou, Algal Research, Volume 64, 2022, 102670.

Graphene-Mediated removal of Microcystin-LR in chitosan/graphene composites for treatment
of harmful algal blooms

Sarah Grace Zetterholm, Luke Gurtowski, Jesse L. Roberts, Sheila McLeod, Brianna M. Fernando,
Chris S. Griggs, Chemosphere, Volume 300, 2022, 134583.

Gene expression changes in Daphnia magna following waterborne exposure to cyanobacterial
strains from the genus Nostoc

Petar G. Davidovic, Dajana J. Blagojevic, Gospava G. Lazic, Jelica B. Simeunovic, Harmful Algae,
Volume 115, 2022, 102232.

Electrochemical biosensor with aptamer/porous platinum nanoparticle on round-type micro-
gap electrode for saxitoxin detection in fresh water

Jeong Ah Park, Namgook Kwon, Eunhae Park, Younghun Kim, Hongje Jang, Junhong Min, Taek Lee,
Biosensors and Bioelectronics, Volume 210, 2022, 114300.

The influence of Lake Okeechobee discharges on Karenia brevis blooms and the effects on
wildlife along the central west coast of Florida

Margot K. Vermeylen, Toby G. Knowles, Heather W. Barron, Harmful Algae, Volume 115, 2022,
102237.

Air, land, and water variables associated with the first appearance and current spatial
distribution of toxic Prymnesium parvum blooms in reservoirs of the Southern Great Plains, USA

Shisbeth Tabora-Sarmiento, Reynaldo Patino, Carlos Portillo-Quintero, Cade Coldren, Science of
The Total Environment, 2022, 155567.

How reliable is chlorophyll-a as algae proxy in lake environments? New insights from the
perspective of n-alkanes

Yong He, Xiangyu Wang, Fuliu Xu, Science of The Total Environment, 2022, 155700.
https: //doi.org/10.1016/j .scitotenv.2022.155700

*Articles are retrieved monthly from Science Direct research database searching for the following key words:
cyanobacteria, cyanotoxins, harmful algal blooms, HAB(s), etc.


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