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Lake Erie hypoxic zone doesn't affect all fish the same, study finds
Date:1/10/2011

en, move up in the water column or even benefit from increased algae growth, which could lead to more invertebrate prey for fish."

Höök used observed climatic conditions and U.S. Environmental Protection Agency data to estimate daily temperatures and oxygen levels at varying depths over 18 years. Then, researchers used bioenergetic models, which use data about each species' needs in order to survive, to determine when and at what depth fish species' habitats were affected by hypoxia.

Höök said more work is needed to understand the organisms' responses to changes in habitat quality. His research group is developing more complex models to see how hypoxia-induced movements by fish may affect predator-prey relationships and other issues related to hypoxia.


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Contact: Brian Wallheimer
bwallhei@purdue.edu
765-496-2050
Purdue University
Source:Eurekalert  

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