The fisheries potential of a new prairie reservoir : a management perspective

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dc.contributor.authorCampen, Michael
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorRasmussen, Joseph B.
dc.date.accessioned2016-09-15T21:13:54Z
dc.date.available2016-09-15T21:13:54Z
dc.date.issued2016
dc.degree.levelMastersen_US
dc.description.abstractReservoirs are the predominant standing water in the prairie regions of North America and provide major sport fishing opportunities. Reservoirs are young aquatic ecosystems. This study investigates trophic dynamics of reservoirs from three different perspectives: littoral productivity by morphometry and hydrological regimes in reservoirs; zooplankton development and production in a new reservoir; and the impact on growth and recruitment of a top predatory fish lacking appropriate food resources. Water level fluctuations significantly reduce littoral productivity and shift trophic energy flows towards pelagic resources. Pelagic production is positively influenced by appropriate nutrients and increased water residence time. A lack of intermediate zooplanktivorous fish species weakens the link between pelagic primary production and higher trophic levels. The resulting simplified food webs reduce growth and recruitment of top predatory fish. Thus, management must consider introducing species capable of linking the various resources within a reservoir to optimize the fishery potential.en_US
dc.embargoNoen_US
dc.identifier.urihttps://hdl.handle.net/10133/4608
dc.language.isoen_CAen_US
dc.proquest.subject0306en_US
dc.proquest.subject0329en_US
dc.proquest.subject0793en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta : University of Lethbridge, Dept. of Biological Sciencesen_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectfood websen_US
dc.subjecthigh trophic level speciesen_US
dc.subjectlentic fish speciesen_US
dc.subjectlittoral communitiesen_US
dc.subjectpelagic forage fish speciesen_US
dc.subjectwater level fluctuationen_US
dc.titleThe fisheries potential of a new prairie reservoir : a management perspectiveen_US
dc.typeThesisen_US
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