lake erie update--2013 dr. jeffrey m. reutter director, ohio sea grant college program
TRANSCRIPT
Lake Erie Update--2013
Dr. Jeffrey M. ReutterDirector, Ohio Sea Grant College
Program
Blue-green Algae Bloom circa 1971, Lake Erie
Photo: Forsythe and Reutter
June 22, 1969
Lake Erie wasn’t always the Walleye Capital of the World
• Phosphorus reductions from point sources (29,000 metric tons to 11,000).
What brought about the rebirth (dead lake to Walleye
Capital)?
Spr
ing
TP
load
, M
aum
ee R
.2012
TP loading during March-June 2012 was one of the lowest on record, resulting in a much smaller algal bloom.
Source: Tom Bridgeman, UT
Photos: Jeff Reutter
Microcystis, Stone Lab, 8/10/10
Photo: NOAA Satellite Image
October 9, 2011
Microcystis near Marblehead
October 9, 2011
Photo: Richard Kraus, United States Geological Survey
Microcystis, Stone Lab, 9/20/13
2013 Microcystis open water bloom
2013 open water bloom was second only to 2011 over last 12 years. Source: Tom Bridgeman, UT.
2013 Forecast: Significant bloom.similar to 2003, much milder than 2011
2013
• Reference Dose = amount that can be ingested orally by a person, above which a toxic effect may occur, on a milligram per kilogram body weight per day basis.
Toxicity of Algal Toxins Relative to Other Toxic Compounds
found in Water
Dioxin (0.000001 mg/kg-d)
Microcystin LR (0.000003 mg/kg-d)
Saxitoxin (0.000005 mg/kg-d)
PCBs (0.00002 mg/kg-d)Cylindrospermopsin (0.00003 mg/kg-d)
Methylmercury (0.0001 mg/kg-d)
Anatoxin-A (0.0005 mg/kg-d)
DDT (0.0005 mg/kg-d)
Selenium (0.005 mg/kg-d)
Alachlor (0.01 mg/kg-d)Cyanide (0.02 mg/kg-d)
Atrazine (0.04 mg/kg-d)Fluoride (0.06 mg/kg-d)Chlorine (0.1 mg/kg-d)Aluminum (1 mg/kg-d)Ethylene Glycol (2 mg/kg-d)
Botulinum toxin A (0.001 mg/kg-d)
Toxin Reference Doses
• Serious problem in US and Canada• 21 states and Canada in 2012• Global problem• Chaired Loadings and Targets
Subcommittee for Ohio P Task Force• Now US Co-Chair of the Loadings and
Targets Task Team of Annex 4 (nutrients) Subcommittee of GLWQA
• Weather can determine how we experience a bloom
Are HABs only a Lake Erie and Ohio Problem?
11 years of satellite data provide bloom extent
Data from MERIS 2002-2011, MODIS 2012
high
medium
low
2013 prediction for western Lake Erie:similar to 2003, <1/5 of 2011, 2X 2012
low medium high
concentration
2013 may resemble 20032011 for comparison
9/14/13
October 12, 2013
R. Stumpf, NOAA National Center for Coastal Ocean Science
2013• Only blooms in 2011 and 2013 extended well
into October. • Toxins appeared in treated drinking water in
2013.• Meris vs. Modis Limitations• Greater recognition of of their role by
agriculture community, but clearly not enough action.– When nutrients leave fields they are pollutants.– Goal should be no nutrients leaving fields
1972 Great Lakes Water Quality Agreement
• Signed by President Nixon & Prime Minister Trudeau
• Purpose: – Control Pollution– Research Problems– Measure Cleanup Progress
• Standing Reference (Task) for IJC– Established Great Lakes Regional Office in
Windsor & advisory boards
• Results: Ban of phosphorus in detergents, increased treatment levels, point source controls & dramatic improvements
New Agreement Signed in 2012
June 2009 The U.S and Canada agree to renegotiate the Great Lakes Water Quality Agreement
Great Lakes Water Qual Agreement--2012
• 10 Annexes• Each annex has several Task Teams• Gail and I serve on Annex 4—Nutrients
– I am US Co-chair the Objectives and Loadings Task Team
– Nutrient problems are different in each basin of Lake Erie and in each Great Lake
• I also serve on Annex 2—LaMPs
For more information:Dr. Jeff Reutter, Director
Ohio Sea Grant and Stone Lab
Ohio State Univ.
1314 Kinnear Rd.
Col, OH 43212
614-292-8949
Stone Laboratory
Ohio State Univ.
Box 119
Put-in-Bay, OH 43456
614-247-6500
Image: Ohio Sea Grant
Southernmost
Shallowest and Warmest
Photo: Ohio Sea Grant
• 80% of water from upper lakes• 10% direct precipitation• 10% from Lake Erie tributaries
–Maumee • Largest tributary to Great Lakes
–Drains 4.5 million acres of ag land
• 3% of flow into Lake Erie
80:10:10 Rule
Superior Michigan Huron Erie Ontario0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Residential Cropland PastureForest Brush/Wetland
Major Land Uses in The Great Lakes
Therefore,
• The 80% we get from the upper lakes and the 10% that represents precipitation is likely much cleaner than the 10% that comes in from the small tributaries around Lake Erie. Why—those lakes have lots of forest cover and very little agriculture.
• More sediment• More nutrients (fertilizers and sewage)• More pesticides• (The above 3 items are exacerbated by
storms, which will be more frequent and severe due to climate change.)
• And Lake Erie is still biologically the most productive of the Great Lakes—And always will be!!
Because of Land Use, Lake Erie Gets:
Lake Superior: 50% of the water and 2% of the fish
Lake Erie: 2% of the water and 50% of the fish
(Not exact, but instructive)
50:2 Rule
• Sedimentation• Phosphorus and nutrient loading
– Harmful algal blooms– Western, Central, and Eastern Basin Differences– Different problems in different lakes (possibly more
difficult than Lake Erie)
• Aquatic invasive species• Dead Zone—exacerbated by nutrients• Climate Change—Makes the others worse• Coastal Economic Development
Lake Erie’s 7 Biggest Problems/Issues
(see Twine Line, Spring/Summer, 2012)
Events Leading to the Great Lakes Water Quality Agreement
• 1940-1960 Rapid industrial growth - excessive nutrient loading, high algal growth, low oxygen & massive fish kills
• 1946 IJC Reports on Pollution of Connecting Channels (1950)
• DDT and other pesticides cause deformities; reproductive failure in fish and birds
• 1964 IJC Reports on Pollution in Lake Erie & Lower Lakes (1970)
• Lake Erie declared dead & Cuyahoga River Fire (1969)
• Intense public outcry over the environment
Organization
3 international agreements between U.S. and Canada serve as platform for managing most water resources
The IJC and the Governments share common goals of the agreement, but have different responsibilities.
The IJC monitors progress and reports to the governments.
The Governments are responsible for implementing the agreement.
IJC reports are released to both the governments and the public; the IJC depends upon public opinion to compel government action.
Oversight & Implementation
Background—CSMI
• Cooperative Monitoring Initiative (CMI) started in 2002 to coordinate monitoring
• Expanded mandate of CMI to include research coordination resulted in CSMI in 2006
• In 2009, connecting channels (including St. Lawrence) were added to CSMI process
• CSMI follows a 5 year rotational cycle• CSMI does NOT set priorities
Rotational CSMI Cycle
* Canada will participate in another lake
LakeSuperior
LakeHuron Lake
Ontario
LakeErie
LakeMichigan*
CSMI Cycle
Ohio Sea Grant Projects 2014-16R/MD-002• Beneficial reuse of dredged material in manufactured soil blending: Economic/logistical and
performance considerations• PI: Elizabeth Dayton, Ohio State University
R/ES-012 • Impacts of climate change on public health in the Great Lakes due to harmful algae blooms• PI: Jay Martin, Ohio State University
R/ER-097• Should nitrogen be managed in Lake Erie? The potential role of nitrogen fixation by cyanobacteria• PI: Darren Bade, Kent State University
R/ER-104• Source tracking and toxigenicity of Planktothrix in Sandusky Bay• PI: George S. Bullerjahn, Bowling Green State University
R/PS-049• Mapping drain tile and modeling agricultural contribution to nonpoint source pollution in the
western Lake Erie basin• PI: Kevin Czajkowski, University of Toledo•
R/ER-103• The role of nitrogen concentration in regulating cyanobacterial bloom toxicity in a eutrophic lake• PI: Justin Chaffin, Ohio State University
•