Show simple item record

dc.contributor.authorSmith, Alexen_US
dc.coverage.spatialMaple Bay - Douglas Lakeen_US
dc.coverage.spatialMaple River - East Branchen_US
dc.coverage.spatialDamsiteen_US
dc.coverage.spatialLake Kathleenen_US
dc.coverage.spatialMaple Riveren_US
dc.date.accessioned2007-06-14T23:36:08Z
dc.date.available2007-06-14T23:36:08Z
dc.date.issued2005en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/55074
dc.description.abstractWe looked similarities in sets of phytoplankton species between Douglas Lake and Lake Kathleen in Cheboygan County, MI, connected by the Maple River. We also compared changes in density and diversity of phytoplankton flowing through a natural lake opening (between Douglas Lake and the upper Maple River) with changes in phytoplankton flowing across the Maple River Dam (separating Lake Kathleen from the lower Maple River). We took plankton tows and water samples at four sites: in Douglas Lake, downriver from Douglas Lake, in Lake Kathleen, and downriver from Lake Kathleen. By identifying species of plankton found in the tows and counting the number of cell/ml in our water samples using Palmer-Maloney cells, we obtained lists of species, their absolute densities, and overall diversity for each site. These data were compared between sites. The two lakes were found to support smiilar collections of species, likely indicating a communication of species via the Maple River. We found an increase in the density of plankters as they moved through the natural lake opening, wich was significant for diatoms (t=3.284, df=6, p=0.017) but not for soft algae. This may have been due to the colonization of the lake but not the river by zebra mussels. All plankton other than diatoms and Dinobryon sertularia droppped sharply in density as they crossed the dam (t=8.545, df=6, p<0.001), making for a considerable drop in diversity. We concluded that the turbidity of the dam-crossing likely eliminated many plankters from the river, while diatoms and D. sertularia were unaffected.en_US
dc.format.extent408302 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.subjectPhycologyen_US
dc.titleThe effects of rivers and manmade impoundments on freshwater phytoplankton communities in northern lower Michigan.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/2027.42/55074/1/3519.pdfen_US
dc.description.filedescriptionDescription of 3519.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