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Tiny Predator has Large Effect on Lake Huron
News release from the U.S. Geological Survey.

An invasive species, the spiny water flea, is likely a primary driver of changes in Lake Huron’s food web over the past decade, according to a new U.S. Geological Survey study.

The USGS research suggests that consumption of prey by invertebrates is outweighing consumption by fish in Lake Huron, and one invertebrate in particular – the invasive Bythotrephes, or spiny water flea – is likely a primary driver of changes in the food web. This predator ate 78 percent of all zooplankton prey consumed at the study sites, said Dr. David B. Bunnell, USGS scientist and lead author of the report.


 
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Biofoulers Global Management Costs the US $277 Million Annually - Biofoulers are organisms that accumulate underwater on hard surfaces, to the detriment of property and economically important activities, such as shipping, power generation, and water treatment. While plants and algae can act as freshwater biofoulers, the study focused on the impact of animals. Eleven groups known to cause problems were investigated, among them mussels, clams, snails, crustaceans, sponges, and insects.


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