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A comparison of yellow perch, walleye, and northern pike population characteristics in two saline-eutrophic lakes of southwestern Manitoba

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dc.contributor.author Hopky, G. E. en_US
dc.date.accessioned 2009-12-01T20:19:36Z
dc.date.available 2009-12-01T20:19:36Z
dc.date.issued 1982-08-01-01:09T00:00:00Z en_US
dc.identifier ocm72777951 en_US
dc.identifier.uri http://hdl.handle.net/1993/3475
dc.description.abstract Lake trophy and fish population characteristics were studied in two small saline lakes in southwestern Manitoba during the 1978 and 1979 open-water periods. Greater eutrophy in St. Dalmas Lake (area = 61.3 ha; T.D.S. = 2183 mg.1 -1) compared to S. Thomas Lake (area = 79.2 ha; T.D.S. = 1390 mg.1 -l) was related to highly localized edaphic conditions. A higher mean annual chlorophyll-a concentration and zooplankton biomass was observed in St. Dalmas. Consistent with lake trophic differences, the pooled abundance or biomass of the principal fish species in St. Dalmas (yellow perch Perca flavescens, and walleye Stizostedion vitreum vitreum) was greater than that of those in S. Thomas (northern pike Esox lucius, yellow perch and walleye). Perch predominated in both lakes, but their relative abundance and biomass was greater in St. Dalmas. Mark and recapture experiments showed greater walleye biomass (10.7 kg/ha) in St. Dalmas than the biomass of either S. Thomas walleye (0.9 kg/ha) or pike (5.5 kg/ha). These estimates are comparable to mean values reported for non-saline lake populations. A more diverse piscine community was observed in S. Thomas... en_US
dc.format.extent xi, 174 [i.e. 198] leaves : en_US
dc.format.extent 6357565 bytes
dc.format.mimetype application/pdf
dc.language en en_US
dc.language.iso en_US
dc.rights The reproduction of this thesis has been made available by authority of the copyright owner solely for the purpose of private study and research, and may only be reproduced and copied as permitted by copyright laws or with express written authorization from the copyright owner. en_US
dc.rights info:eu-repo/semantics/openAccess
dc.title A comparison of yellow perch, walleye, and northern pike population characteristics in two saline-eutrophic lakes of southwestern Manitoba en_US
dc.type info:eu-repo/semantics/masterThesis
dc.degree.discipline Zoology en_US
dc.degree.level Master of Science (M.Sc.) en_US


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