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GLIN==> Seminar - Ann Arbor



NOAA GREAT LAKES SEMINAR SERIES

Title: Functional and Structural Shifts in the Near-shore Algal Community of the 
Great Lakes: The Response to Exotic Mussels.

Speaker: Rex L. Lowe, Department of Biological Sciences, Bowling Green State 
University, Bowling Green, OH

Date:  March 25, 2003

Time:  10:30 a.m.

Where:
GLERL Main Conference Room
2205 Commonwealth Blvd.
Ann Arbor, MI  48105
For directions:
       http://www.glerl.noaa.gov/facil/triptik.html

Abstract:

Invasion of the Great Lakes by exotic dreissenid mussels has
led to profound changes in the structure and function of the biota of
the littoral zone. The filter feeding activity of dense populations
of dreissenids is associated with increased light penetration,
reduction of planktonic algae, proliferation of benthic algae and a
shift in the quality and quantity of benthic consumers. This
phenomenon has now been documented for the four lower Great Lakes.
Rocky shoals of oligotrophic Lake Michigan are now experiencing
unprecidented proliferations of the "nuisance" alga Cladophora
leading to the establishment of trophic "hot spots" in the littoral
zone. The implications for the fisheries are yet to be explored.

Contact:
Rochelle Sturtevant
Phone: 734-741-2287
E-mail: rochelle.sturtevant@noaa.gov


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