Beavers and the wetlands they create play a complex role in the dynamics of low-gradient streams of the Upper Midwest, especially where dams alter important habitat for trout. Here I will provide information about a long-term study addressing how beaver dams change instream and riparian habitat in trout streams throughout Wisconsin; the transient versus permanent nature of beaver dams; how beaver dams affect short-term trout population and fish community dynamics; and the influence of beaver dams on stream temperature.
Matthew Mitro, WDNR
Recorded February 3, 2023.
Matthew Mitro is a coldwater fisheries research scientist with the Wisconsin Department of Natural Resources. Based in Madison, Matt has been working with the DNR on statewide trout fisheries issues since 2003. Matt has also worked for the EPA’s Atlantic Ecology Division and the Atlantic States Marine Fisheries Commission, and he earned his Ph.D. in fisheries at Montana State University studying rainbow trout recruitment in the Henry’s Fork.