Protozoan communities, macrophyte vegetation and trophic status of northern Michigan wetland lakes

dc.contributor.authorHenebry, Michael S.en
dc.contributor.departmentZoologyen
dc.date.accessioned2016-05-23T15:20:03Zen
dc.date.available2016-05-23T15:20:03Zen
dc.date.issued1981en
dc.description.abstractFreshwater wetland lakes have long been ignored by biologists and limnologists. This was the first study to simultaneously sample protozoan communities, macrophyte vegetation, water chemistry and nutrient status, and primary productivity of the phytoplankton in each of the four major types of wetlands -- bogs, fens, marshes, and swamps. The following hypotheses were supported by data from this study: 1) that differences in plant communities, as measured by a coefficient of similarity, would be greater than differences in protozoan communities from the four different types of wetlands; 2) that common measures of trophic status -- primary productivity, chlorophyll a, and phosphorus and nitrogen nutrients -- would show that bog lakes were eutrophic; and 3) that there would be a positive correlation between the rate of colonization of polyurethane foam unit (PFU) artificial substrates by Protozoa and the trophic status of the wetland lakes. Other evidence of highly eutrophic conditions in the bogs studied were the high ratios of autotrophic to heterotrophic protozoa in the PFU samples, and the general appearance of some bog sites -- like that of·thick green soup. One bog was oligotrophic as indicated by the very slow rate of colonization of the PFUs placed in it. It was concluded that low pH, brown water bog lakes can span the full range from oligotrophy to eutrophy, and that bog lakes should probably not be labeled dystrophic, since that term implies an extreme degree of oligotrophy.en
dc.description.degreePh. D.en
dc.format.extentviii, 116, [2] leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/71134en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 7971278en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1981.H463en
dc.subject.lcshWetland ecology -- Michiganen
dc.titleProtozoan communities, macrophyte vegetation and trophic status of northern Michigan wetland lakesen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineZoologyen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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