Show simple item record

dc.contributor.authorMakarewicz, Joseph C.
dc.contributor.authorLewis, Theodore W.
dc.contributor.authorBertram, Paul
dc.date.accessioned2021-09-07T20:44:55Z
dc.date.available2021-09-07T20:44:55Z
dc.date.issued1989-08-01
dc.identifier.urihttp://hdl.handle.net/20.500.12648/4126
dc.descriptionPERFORMING ORGANIZATION REPORT NO: GLNPO Report No. 01 -91 CONTRACT/GRANT NO.: R005007-01 Data files available from Drake Memorial Library, The College at Brockport, and will be made available online after digitization.
dc.description.abstractDuring the spring, summer and autumn of 1985, the structure of the phytoplankton and zooplankton communities in the offshore waters of Lake Michigan, Lake Huron and Lake Erie was monitored. In Lake Michigan, the presence of an oligotrophic rotifer association and the oligotrophic crustacean indicator species Diaptomus sicilis and Limnaealanus macrurus, the predominance of mesotrophic diatom species, and the abundance and biomass of plankton between that of Lake Huron and Lake Erie suggest that the offshore waters are currently in the oligotrophic-mesotrophic range. In Lake Huron, the presence of an oligotrophic rotifer assemblage, the domination of the calanoid copepods, the abundance of the oligotrophic Diaptomus sicilis, and relatively low zooplankton abundance suggest that the offshore waters continue to be oligotrophic. In Lake Erie, phytoplankton and zooplankton species composition and biomass suggest a more productive status than Lake Michigan and Lake Huron. Data support the classification of the Western Basin as meso-eutrophic, the Central Basin as mesotrophic and the Eastern Basin as oligo-mesotrophic. Significant changes in the composition of the zooplankton community with the appearance of the large cladoceran Daphnia pulicaria in Lake Erie are attributed to a change in planktivory. The planktivorous emerald and spottail shiners have dramatically declined in abundance, possibly due to a resurgence of the walleye and the salmonine stocking programs.
dc.language.isoen_US
dc.subjectGreat Lakes
dc.subjectLake Michigan
dc.subjectLake Huron
dc.subjectLake Erie
dc.subjectLimnology
dc.subjectEutrophication
dc.subjectCommunity Structure
dc.subjectPlankton
dc.subjectPhytoplankton
dc.subjectZooplankton
dc.subjectSpecies
dc.titlePhytoplankton and Zooplankton Composition, Abundance and Distribution and Trophic Interactions: Offshore Region of Lakes Erie, Lake Huron and Lake Michigan, 1985
dc.typearticle
refterms.dateFOA2021-09-07T20:44:55Z
dc.description.institutionSUNY Brockport
dc.source.statuspublished
dc.description.publicationtitleGovernment Documents (Water Resources)
dc.contributor.organizationThe College at Brockport
dc.contributor.organizationU.S. Environmental Protection Agency


Files in this item

Thumbnail
Name:
wr_misc/38/fulltext (1).pdf
Size:
2.765Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record