Show simple item record

dc.contributor.authorDodge, Michelleen_US
dc.contributor.authorDorset, Jenniferen_US
dc.coverage.spatialMaple River - East Branchen_US
dc.coverage.spatialMaple Riveren_US
dc.date.accessioned2007-06-14T21:43:46Z
dc.date.available2007-06-14T21:43:46Z
dc.date.issued1991en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/54260
dc.description.abstractAquatic invertebrates drift from one location to another in order to find more suitable habitat, food, or escape from predation. Our objective in measuring the colonization of aquatic invertebrates was to test whether these are constant over time. We choose two sites, above and below a dammed lake on the East Maple River, and three locations within those sites, main current shade, main current sunny, and deadfall area. Three lidded baskets with five rocks within them were buried at each location. Weekly one basket from each location was removed and invertebrates tallied for three weeks. The water chemistry tests performed at each site were extremely similar. General trends observed show that the invertebrates prefer the upstream site over the downstream site possibly due to the slower current upstream allowing the organisms to drop out of the water column into the baskets. The sunny habitat apparently was chosen most often perhaps because of higher primary production. The family Simuliidae comprised the greatest proportion of organisms overall. This may be due to no preference of location selection by the Simuliids. Three weeks of data is not enough to fully develop these hypotheses, but it appears that there are different colonization time scales for each of the sites for unknown reasons.en_US
dc.format.extent523350 bytes
dc.format.extent3144 bytes
dc.format.mimetypeapplication/pdf
dc.format.mimetypetext/plain
dc.relation.haspartGraphen_US
dc.relation.haspartMapen_US
dc.relation.haspartTable of Numbersen_US
dc.subjectStreamsen_US
dc.titleVariation in standing crop and species composition with stream reach, colonization time, and habitat on the Maple River, Emmet County, Michigan, USA.en_US
dc.typeWorking Paperen_US
dc.subject.hlbsecondlevelNatural Resource and Environmenten_US
dc.subject.hlbtoplevelScienceen_US
dc.contributor.affiliationumBiological Station, University of Michiganen_US
dc.contributor.affiliationumcampusAnn Arboren_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/54260/1/2696.pdfen_US
dc.description.filedescriptionDescription of 2696.pdf : Access restricted to on-site users at the U-M Biological Station.en_US
dc.owningcollnameBiological Station, University of Michigan (UMBS)


Files in this item

Show simple item record