Examining the impacts of stream channelization on salmonid and aquatic invertebrate communities of a fifth-order montane river

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dc.contributor.authorLennox, Preston A.
dc.contributor.supervisorRasmussen, Joseph B.
dc.date.accessioned2014-02-06T17:20:20Z
dc.date.available2014-02-06T17:20:20Z
dc.date.issued2012
dc.degree.levelMasters
dc.descriptionix, 104 leaves : col. ill., col. maps ; 29 cmen_US
dc.description.abstractStream channelization is a common form of anthropogenic disturbance, whose impacts on cold water salmonid communities have received little attention in comparison to the body of work demonstrating its negative effects on low land, warm water systems. Here, I compared the effects of stream channelization on fish and invertebrate communities and their habitats in disturbed and undisturbed cold-water mountain streams in southern Alberta. I demonstrate that stream channelization has imposed significant alterations to stream habitat, most notably a loss of deep habitat, and that these alterations have led to a statistically significant decline in abundance and biomass of Rainbow Trout and Mountain Whitefish, as well as a significant decline aquatic invertebrate biomass. Because of the importance of monitoring fish abundance in deep pools, I used snorkel surveys instead of electrofishing. In shallow, disturbed streams, however, snorkel surveys may be less effective and should be used with caution.en_US
dc.identifier.urihttps://hdl.handle.net/10133/3363
dc.language.isoen_CAen_US
dc.publisherLethbridge, Alta. : University of Lethbridge, Dept. of Biological Sciences, c2012en_US
dc.publisher.departmentDepartment of Biological Sciencesen_US
dc.publisher.facultyArts and Scienceen_US
dc.subjectStream channelization -- Environmental aspects -- Alberta -- Crowsnest Riveren_US
dc.subjectStream channelization -- Research -- Alberta -- Crowsnest Riveren_US
dc.subjectSalmonidae -- Effect of human beings on -- Alberta -- Crowsnest Riveren_US
dc.subjectAquatic invertebrates -- Effect of human beings on -- Alberta -- Crowsnest Riveren_US
dc.subjectCrowsnest River (Alta.)en_US
dc.subjectDissertations, Academicen_US
dc.titleExamining the impacts of stream channelization on salmonid and aquatic invertebrate communities of a fifth-order montane riveren_US
dc.typeThesisen_US
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