The Effects of Lunker Structures on Brook Trout and Brown Trout Abundances in Rosenow Creek, Wisconsin
Loading...
Authors
Campbell, Caroline
Issue Date
1998
Type
Thesis
Language
en_US
Keywords
Alternative Title
Abstract
Numbers of brook trout, a salmonid species native to Wisconsin, have been
declining in recent years. Although the mechanism of their disappearance has not yet
been proven, it is suspected that the introduction of brown trout to streams previously
occupied only by brook trout is having a major impact. We hypothesized that brown
trout were displacing brook trout in optimal stream habitat. Rosenow Creek was chosen
as a study site on account of its being divided into a section of artificial habitat,
characterized by lunker structures, and a section of natural habitat. Fish abundances and
stream habitat were studied. Brown trout were found to occupy optimal stream areas of
high velocity and high undercut area, while brook trout occupied marginal upstream areas
of low velocity.
Description
v, 24 p.
Citation
Publisher
Kalamazoo College
License
U.S. copyright laws protect this material. Commercial use or distribution of this material is not permitted without prior written permission of the copyright holder.