HR: 1330h
AN: NB33E-03    [Abstracts]
TI: The Impact of Restoration Efforts on the Geomorphology, Substrate, and Organic Matter Budgets of Three West Michigan Streams.
AU: * Wright, A L
EM: strilera@student.gvsu.edu
AF: Biology Department and Annis Water Resources Institute, Grand Valley State University, 1 Campus Drive, Allendale, MI 49401-9403 United States
AU: Stout, N Y
EM: stoutn@gvsu.edu
AF: Biology Department and Annis Water Resources Institute, Grand Valley State University, 1 Campus Drive, Allendale, MI 49401-9403 United States
AU: Gressick, N J
EM: biologistnick@yahoo.com
AF: Biology Department and Annis Water Resources Institute, Grand Valley State University, 1 Campus Drive, Allendale, MI 49401-9403 United States
AU: Snyder, E B
EM: snydeeri@gvsu.edu
AF: Biology Department and Annis Water Resources Institute, Grand Valley State University, 1 Campus Drive, Allendale, MI 49401-9403 United States
AB: The structure and function of stream ecosystems is largely determined by the physical habitat of the stream. Anthropogenic addition of fine sediment from eroding stream banks and improper road stream crossings can have many negative consequences, including a reduction in substrate heterogeneity, masking of fish spawning gravels and reduction of habitat. Our objective is to examine the consequences of stream restoration efforts on the sediment composition of three streams. Specifically this includes an assessment of substrate before and after, and above and below restoration sites as well as changes in substrate composition from headwaters to mouth. Initial results from a subset of 10 restoration sites suggest that fine sediments are more ubiquitous downstream of erosion sources (p<0.05 for 16 mm, 500, 250 and 125 um for weight and/or volume; ANOVA). In addition, there was a trend for restoration efforts in the form of road stream crossing improvement, to increase sand substrate - likely as a result of construction. Although the initial increase in fine sediments downstream from the road stream crossing seems negative it is expected continued monitoring will show an improvement in substrate.
DE: 9810 New fields (not classifiable under other headings)
SC: North American Benthological Society [NB]
MN: 2005 Joint Assembly