A section of Bear Creek in northwestern Wisconsin was relocated to accommodate new highway construction. The 850-m section of the stream was shortened to 650 m and fashioned with five broad bends and a uniform width and depth. Sandy substrate and lack of coarse particulate organic matter within the new channel delayed colonization by aquatic insects. The absence of snags, boulders, and cobbles in the design of the new channel reduced available habitat. Substrate stabilization and colonization of available habitats was determined to be complete 5.5 years after channelization, when the 22 dominant insect taxa were similar to the control sites. The changes in insect population and substrate type during the six year study are addressed.
Narf, Richard P.
"Aquatic Insect Colonization and Substrate Changes in a Relocated Stream Segment,"
The Great Lakes Entomologist: Vol. 18
, Article 4.
Available at: http://scholar.valpo.edu/tgle/vol18/iss2/4