HR: 16:00h
AN: NB24A-03    [Abstracts]
TI: Macroinvertebrate Community Response to the Elimination of Concentrated Feedlot Runoff to a Headwater Stream
AU: * Snitgen, J L
EM: jsnitgen@oneidanation.org
AF: Oneida Environmental, Health and Safety, 3759 W. Mason Street, P.O. Box 365 , Oneida, WI 54155
AU: Moren, M M
EM: mmoren@oneidanation.org
AF: Oneida Environmental, Health and Safety, 3759 W. Mason Street, P.O. Box 365 , Oneida, WI 54155
AB: During rainfall and snow melt events, a first order, cold-water stream was receiving varying amounts of liquefied manure from a concentrated feed lot. Stream restoration efforts included the implementation of best management practices to prevent further discharge of the water/manure mixture to the stream. Physical, chemical and biological data were collected pre-construction and two years post-construction of the containment system at a fixed location downstream of the feedlot. Hilsenhoff Biotic Index scores improved significantly, from 6.79 or "Fairly Poor" before the installation of the manure containment system, to 5.28 or "Good" after the installation of the manure containment system. Taxa richness improved from 25 to 34 and the EPT score improved from 0 to 4. Key words: macroinvertebrate, community response, manure, feedlot runoff, stream restoration
DE: 9810 New fields (not classifiable under other headings)
SC: North American Benthological Society [NB]
MN: 2005 Joint Assembly