Developing fish trophic interaction indicators of climate change for the Great Lakes

Scheduled completion date: April 2014
LCC funding: $147,907
Richard Kraus, U.S. Geological Survey

The project addresses regional climate change effects on aquatic food webs in the Great Lakes, and will develop fishery management tools that characterize food web changes to support efficient monitoring and adaptive management. Researchers are developing a comparative analysis of trophic interactions in fisheries from three ecotones of Lake Erie representing scenarios that may occur in other Great Lakes if current climate trends continue. Cool water fish guilds in Lake Erie’s central basin are seasonally squeezed vertically in the water column and horizontally towards the eastern basin, and into shallower waters by hypoxia. This seasonal change forces cool and cold water fish guilds to overlap with consequences to food web dynamics. Researchers will use standard dietary and biochemical techniques to identify critical food web pathways and analytical metrics that can serve as synoptic measures of the effect of these physical forces on food web structure and fishery resources.

Upper Midwest and Great Lakes LCC

The Upper Midwest and Great Lakes LCC envisions a conservation community that while governed by their unique purposes and missions, collaborates on sustaining lands and waters that support natural and cultural resources and the services they provide. Our mission is to support and sustain this conservation community by facilitating communication, coordination and collaboration to bridge cutting-edge scientific research with natural resources management.
 

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Ashley Spratt Communications Coordinator ashley_spratt@fws.gov 573-234-2132 ext. 104
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