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dc.contributor.supervisor Gillis, Darren (Biological Sciences) en_US
dc.contributor.author Charles, Colin
dc.date.accessioned 2013-07-03T20:40:03Z
dc.date.available 2013-07-03T20:40:03Z
dc.date.issued 2013-07-03
dc.identifier.uri http://hdl.handle.net/1993/21695
dc.description.abstract This thesis investigates the influence of predator movements upon habitat selection and foraging success. It deals with two very distinct datasets one from a marine system, the snow crab (Chionoecetes opilio) fishery, and the second from a freshwater system, an experimental rainbow trout (Oncorhynchus mykiss) aquaculture operation. Deriving a standardized measure of catch from logbook data is important because catch per unit effort (CPUE) is used in fisheries analysis to estimate abundance, but it some cases CPUE is a biased estimate. For the snow crab fishery, a relative abundance measure was developed using fisher movements and logbook data that reflected commercially available biomass and produced an improved relative abundance estimate. Results from the aquaculture dataset indicate that escaped farmed rainbow trout continue to use the cage site when waste feed is available, while native lake trout do not interact with the cage. Once access to waste feed is removed, both lake trout and escaped rainbow trout do not use the cage site. This thesis uses methods to identify patterns and behaviours using movement tracks to increase our understanding of predator habitat usage. en_US
dc.subject Abundance Index en_US
dc.subject Aquaculture en_US
dc.subject GLM en_US
dc.subject UDOI en_US
dc.subject Movement en_US
dc.subject Hidden Markov Models en_US
dc.subject Snow Crab en_US
dc.subject Rainbow Trout en_US
dc.subject CPUE en_US
dc.title An examination of predator habitat usage: movement analysis in a marine fishery and freshwater fish en_US
dc.degree.discipline Biological Sciences en_US
dc.contributor.examiningcommittee Blanchfield, Paul (Biological Sciences) Walker, David (Environment and Geography) en_US
dc.degree.level Master of Science (M.Sc.) en_US
dc.description.note October 2013 en_US


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