Nutrient limitation dynamics of western lake erie cyanoHAB biomass and toxin production

2021 ◽  
Author(s):  
Barnard Malcolm ◽  
Justin Chaffin ◽  
Haley Plaas ◽  
Greg Boyer ◽  
Bofan Wei ◽  
...  
Keyword(s):  
Nutrient Limitation ◽  
Lake Erie ◽  
Toxin Production ◽  
Western Lake ◽  
Western Lake Erie

scholarly journals Roles of Nutrient Limitation on Western Lake Erie CyanoHAB Toxin Production

Toxins ◽  
2021 ◽  
Vol 13 (1) ◽  
pp. 47
Author(s):  
Malcolm A. Barnard ◽  
Justin D. Chaffin ◽  
Haley E. Plaas ◽  
Gregory L. Boyer ◽  
Bofan Wei ◽  
...  
Keyword(s):  
Nutrient Limitation ◽  
Biomass Production ◽  
Lake Erie ◽  
Harmful Algal Bloom ◽  
Toxin Production ◽  
Western Basin ◽  
N Limitation ◽  
P Limitation ◽  
Western Lake ◽  
Western Lake Erie

Cyanobacterial harmful algal bloom (CyanoHAB) proliferation is a global problem impacting ecosystem and human health. Western Lake Erie (WLE) typically endures two highly toxic CyanoHABs during summer: a Microcystis spp. bloom in Maumee Bay that extends throughout the western basin, and a Planktothrix spp. bloom in Sandusky Bay. Recently, the USA and Canada agreed to a 40% phosphorus (P) load reduction to lessen the severity of the WLE blooms. To investigate phosphorus and nitrogen (N) limitation of biomass and toxin production in WLE CyanoHABs, we conducted in situ nutrient addition and 40% dilution microcosm bioassays in June and August 2019. During the June Sandusky Bay bloom, biomass production as well as hepatotoxic microcystin and neurotoxic anatoxin production were N and P co-limited with microcystin production becoming nutrient deplete under 40% dilution. During August, the Maumee Bay bloom produced microcystin under nutrient repletion with slight induced P limitation under 40% dilution, and the Sandusky Bay bloom produced anatoxin under N limitation in both dilution treatments. The results demonstrate the importance of nutrient limitation effects on microcystin and anatoxin production. To properly combat cyanotoxin and cyanobacterial biomass production in WLE, both N and P reduction efforts should be implemented in its watershed.

Projected Changes to the Trophodynamics of PCBs in the Western Lake Erie Ecosystem Attributed to the Presence of Zebra Mussels (Dreissena polymorpha)

1998 ◽  
Vol 32 (24) ◽  
pp. 3862-3867 ◽  
Author(s):  
Heather A. Morrison ◽  
Frank A. P. C. Gobas ◽  
Rodica Lazar ◽  
D. Michael Whittle ◽  
G. Douglas Haffner
Keyword(s):  
Dreissena Polymorpha ◽  
Lake Erie ◽  
Zebra Mussels ◽  
Western Lake ◽  
Projected Changes ◽  
Western Lake Erie

Environmental Factors Affecting the Strength of Walleye (Stizostedion vitreum vitreum) Year-Classes in Western Lake Erie, 1960–70

1975 ◽  
Vol 32 (10) ◽  
pp. 1733-1743 ◽  
Author(s):  
Wolf-Dieter N. Busch ◽  
Russell L. Scholl ◽  
Wilbur L. Hartman
Keyword(s):  
Water Level ◽  
Lake Erie ◽  
Stizostedion Vitreum ◽  
Low Oxygen ◽  
Brood Stock ◽  
Factors Affecting ◽  
Spawning Area ◽  
Western Lake ◽  
Class Strength ◽  
Western Lake Erie

Commercial production of walleyes (Stizostedion vitreum vitreum) from western Lake Erie declined from 5.9 million pounds in 1956 to 140,000 pounds by 1969. Since 1956, marked irregularity in year-class success has developed. Only four year-classes were considered good during 1959–70. The rate and regularity of water warming during the spring spawning and incubation periods in 1960–70 had a positive effect on the density of egg deposits and the resulting year-class strength. Rates of warming were not themselves detrimental, but rather the extended length of the incubation period in cool springs increased the exposure of eggs to such negative influences as dislodgment from the spawning reefs by strong current action generated by spring storms, or siltation and low oxygen tensions. The annual brood stock size had much less influence on year-class strength than did water temperature. Reproductive success was unrelated to fluctuations in size of suitable reef spawning area caused by changes in water level. Apparently the usable spawning area at any water level is more than adequate to serve the limited walleye brood stocks.

Freshwater mussel community response to warm water discharge in western Lake Erie

2013 ◽  
Vol 39 (3) ◽  
pp. 449-454 ◽  
Author(s):  
Nick J. Bryan ◽  
Christina V. Florence ◽  
Todd D. Crail ◽  
Daryl L. Moorhead
Keyword(s):  
Lake Erie ◽  
Water Discharge ◽  
Freshwater Mussel ◽  
Community Response ◽  
Warm Water ◽  
Western Lake ◽  
Western Lake Erie

A novel method for tracking western Lake Erie Microcystis blooms, 2002–2011

2013 ◽  
Vol 39 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Thomas B. Bridgeman ◽  
Justin D. Chaffin ◽  
Jesse E. Filbrun
Keyword(s):  
Lake Erie ◽  
Western Lake ◽  
Microcystis Blooms ◽  
Novel Method ◽  
Western Lake Erie
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