Chapter

Great Lakes Ecosystems: Invasions, Food Web Dynamics, and the Challenge of Ecological Restoration

James F. Kitchell and Greg G. Sass

in The Vanishing Present: Wisconsin's Changing Lands, Waters, and Wildlife

Published by University of Chicago Press

Published in print September 2008 | ISBN: 9780226871714
Published online February 2013 | e-ISBN: 9780226871745 | DOI: http://dx.doi.org/10.7208/chicago/9780226871745.003.0012
Great Lakes Ecosystems: Invasions, Food Web Dynamics, and the Challenge of Ecological Restoration

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This chapter focuses on major changes in the food web dynamics of Lakes Superior and Michigan that arose due to fisheries management programs and nonnative species invasions. It emphasizes both native and nonnative species representing three trophic levels: (i) top predators in the food web (sea lamprey, stocked Pacific salmon, the native lake trout, and their prey); (ii) expansion of invading zooplankton-feeding fishes (alewife and rainbow smelt) at the middle of the food web; and (iii) declines in primary productivity following the invasion by zebra mussels.

Keywords: Lake Superior; Lake Michigan; fisheries management programs; sea lamprey; stocked Pacific salmon; lake trout; alewife; rainbow smelt; zebra mussels

Chapter.  4933 words.  Illustrated.

Subjects: Biodiversity and Conservation Biology

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