The ecology of Arctic cod (Boreogadus saida) and interactions with seabirds, seals, and whales in the Canadian Arctic

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dc.contributor.authorMatley, Jordan
dc.contributor.examiningcommitteeFisk, Aaron (Biological Sciences) Baydack, Rick (Environment and Geography)en_US
dc.contributor.supervisorDick, Terry (Biological Sciences)en_US
dc.date.accessioned2012-09-18T16:38:57Z
dc.date.available2012-09-18T16:38:57Z
dc.date.issued2012en_US
dc.date.issued2012en_US
dc.degree.disciplineBiological Sciencesen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractThis thesis investigates the foraging of Arctic cod (Boreogadus saida) and its predators during the summer in the Canadian Arctic. Findings included the identification of Arctic cod, ringed seal (Pusa hispida), beluga (Delphinapterus leucas), and narwhal (Monodon monoceros) diet shifts in response to seasonal prey availability; calculation of isotopic diet-tissue discrimination factors for Arctic cod, ringed seals, and whales based on local tissue and stomach content sampling; and determination of predatory cues to optimize foraging, such as the presence of schools. Additionally, I quantified seabird feeding and interspecific interactions such kleptoparasitism and found that black-legged kittiwakes (Rissa tridactyla) and northern fulmars (Fulmarus glacialis) captured cod directly but lost many to parasitic jaegers (Stercorarius parasiticus) and glaucous gulls (Larus hyperboreus). Finally, I determined that schools of cod were important prey sources for northern fulmars, glaucous gulls, and whales however non-schooling cod were a significant source for black-legged kittiwakes and ringed seals.en_US
dc.description.noteOctober 2012en_US
dc.identifier.citationMatley JK, Crawford R, Dick TA (2012) Observation of common raven (Corvus corax) scavenging Arctic cod (Boreogadus saida) from seabirds in the Canadian High Arctic. Polar Biology 35: 1119-1122 doi: 10.1007/s00300-011-1148-1en_US
dc.identifier.citationMatley JK, Fisk AT, Dick TA (2012) Seabird predation on Arctic cod during summer in the Canadian Arctic. Marine Ecology Progress Series 450:219-228 doi: 10.3354/meps09561en_US
dc.identifier.urihttp://hdl.handle.net/1993/8868
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.publisherInter-Researchen_US
dc.rightsopen accessen_US
dc.subjectforagingen_US
dc.subjectdieten_US
dc.subjectstable isotopesen_US
dc.subjectschoolen_US
dc.subjectpredatoren_US
dc.subjectfood weben_US
dc.subjectmigrationen_US
dc.subjectkleptoparasitismen_US
dc.subjectnicheen_US
dc.subjectdiet-tissue discrimination factoren_US
dc.subjectnorthern fulmaren_US
dc.subjectblack-legged kittiwakeen_US
dc.subjectglaucous gullen_US
dc.subjectparasitic jaegeren_US
dc.subjectringed sealen_US
dc.subjectnarwhalen_US
dc.subjectbelugaen_US
dc.titleThe ecology of Arctic cod (Boreogadus saida) and interactions with seabirds, seals, and whales in the Canadian Arcticen_US
dc.typemaster thesisen_US
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