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1 March 2010 Lyngbya wollei in Western Lake Erie
Thomas B. Bridgeman, Wanda A. Penamon
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We report on the emergence of the potentially toxic filamentous cyanobacterium, Lyngbya wollei as a nuisance species in western Lake Erie. The first indication of heavy L. wollei growth along the lake bottom occurred in September 2006, when a storm deposited large mats of L. wollei in coves along the south shore of Maumee Bay. These mats remained intact over winter and new growth was observed along the margins in April 2007. Mats ranged in thickness from 0.2 to 1.2 m and we estimated that one 100-m stretch of shoreline along the southern shore of Maumee Bay was covered with approximately 200 metric tons of L. wollei. Nearshore surveys conducted in July 2008 revealed greatest benthic L. wollei biomass (591 g/m2 ± 361 g/m2 fresh weight) in Maumee Bay at depth contours between 1.5 and 3.5 m corresponding to benthic irradiance of approximately 4.0–0.05% of surface irradiance and sand/crushed dreissenid mussel shell-type substrate. A shoreline survey indicated a generally decreasing prevalence of shoreline L. wollei mats with distance from Maumee Bay. Surveys of nearshore benthic areas outside of Maumee Bay revealed substantial L. wollei beds north along the Michigan shoreline, but very little L wollei growth to the east along the Ohio shoreline.

© 2009 Elsevier B.V.
Thomas B. Bridgeman and Wanda A. Penamon "Lyngbya wollei in Western Lake Erie," Journal of Great Lakes Research 36(1), 167-171, (1 March 2010).
Received: 22 July 2009; Accepted: 25 November 2009; Published: 1 March 2010

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Great Lakes
Harmful Algal Bloom
Lake Erie
Lyngbya wollei
Plectonema wollei
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