State Water Resources Research Institute Program

Project ID: 2007ME152B
Title: Response of a linked lake-stream system to dam removal and restoration of migratory fish. Project Type: Research
Start Date: 3/01/2008
End Date: 2/28/2009
Congressional District: 2nd
Focus Categories: Conservation, Ecology, Nutrients
Keywords: conservation, dams, fish ecology, insects, isotopes, lakes, nutrients, streams, zooplankton
Principal Investigators: Simon, Kevin Scott; Coghlan, Stephen ; Hart, David D.
Federal Funds: $ 4,900
Non-Federal Matching Funds: $ 93,851
Abstract: The installation of dams and other barriers in rivers has blocked the inland movement of migratory fish that may have played a critical ecological role in Maine's inland waters. The removal of dams for restoration purposes is an increasingly popular, but poorly assessed approach to restoring ecological integrity of freshwater ecosystems by reestablishing migratory routes for fish. This project will evaluate the role of migratory fish in lakes and streams and the response of key biological and chemical indicators of ecosystem health to dam removal and subsequent restoration of migratory fish passage in Sedgeunkedunk Stream, Maine. The delivery of marine derived nutrients from migratory fish and their influence on stream and lake communities will be assessed before and after dam removal. The location, timing, and size of the study system provide a unique opportunity to generate information that can be used by stakeholders to guide future river restoration efforts and to understand the role of migratory fish in maintaining the ecological integrity of Maine's inland waters.

Progress/Completion Report, PDF

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