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*Anastasija Zaiko* from the Coastal Research and Planning Institute Klaipeda University, Klaipeda, Lithuania, will be giving a seminar on Wednesday, July 12 as a part of the NOAA/ University of Michigan Great Lakes Seminar Series.

Please find details of her talk listed below.

Title: The Curonian Lagoon: two hundred years with the zebra mussel /Dreissena plymorpha/

Speaker: *Anastasija Zaiko*, Coastal Research and Planning Institute Klaipeda University

Date: Wednesday July 12

Time: 1030 AM

Location: NOAA/ GLERL
2205 Commonwealth Blvd., Ann Arbor, MI, 48105
The Curonian Lagoon, a large shallow (mean depth 3.8 m) and nearly freshwater body situated in the south-eastern part of the Baltic Sea, was invaded by several Ponto-Caspian Species in the beginning of the 19th century after the water link between the Nemunas and Dnepr rivers was established. The invasion of the zebra mussel /Dreissena polymorpha /had the most pronounced effect on the Curonian Lagoon ecosystem. The impact can be traced at different levels: from a local bottom community to the biogeochemical cycle of the whole ecosystem.

The zebra mussel, as a main habitat forming animal species, to a great extent determines the taxonomic and functional guild structure of the local bottom communities. Its community covers about ¼ of the lagoon’s bottom. The area covered by its shell deposits is even larger. The highest macrozoobenthos diversity is found there. There is also a gradient in species composition detected moving from bare sediments through shell deposits and towards the living zebra mussel community.

An invasibility analysis of different habitats within the Lithuanian offshore and coastal waters indicated that the most invaded habitats are those modified by zebra mussel or its shell deposits.

Another aspect of zebra mussel effect – its impact on the material flow at the ecosystem scale. The /D. polymorpha/ clearance and biodeposition rates are interpolated to the entire Lagoon ecosystem using experimental and modeling approach.

If you have any questions or concerns, please email me at kanika.suri@noaa.gov; or call 734-741-2147.

For more information about the seminar series, please visit our website at http://www.glerl.noaa.gov/news/seminars/



Kanika Suri
Web Designer Associate

NOAA Great Lakes Environmental Research Laboratory
2205 Commonwealth Blvd.,
Ann Arbor, MI

Tel: (734) 741-2147
Fax: (734) 741-2055


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