INDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE

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dc.contributor.advisorMcKinnon, Laura
dc.contributor.authorHong, Milly
dc.date.accessioned2022-12-14T16:40:30Z
dc.date.available2022-12-14T16:40:30Z
dc.date.copyright2022-09-01
dc.date.issued2022-12-14
dc.date.updated2022-12-14T16:40:29Z
dc.degree.disciplineBiology
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractThe Alternative Prey Hypothesis (APH) states that predators switch to relatively more abundant prey when their main prey is scarce. Arctic lemming population cycles may indirectly affect predation risk on alternative prey such as shorebird nests as they share predators. I examined the indirect effects of arvicoline rodent cycles on Dunlin (Calidris alpina hudsonia) reproduction in Churchill, Manitoba. Using 10 years of field data, the study suggests collared lemming (Dicrostonyx richardsoni) cycles did not influence Dunlin nest success. Meadow vole (Microtus pennsylvanicus) cycles had an interactive effect with arctic fox (Vulpes lagopus) and red fox (Vulpes vulpes) abundance, indirectly affecting Dunlin nest success. North Atlantic Oscillations had a positive effect on Dunlin nest success. The results suggest that subarctic ecosystems are more complex than the High Arctic with multispecies trophic dynamics that can be used to predict the changing landscapes of the Arctic as the boreal forest expands northwards.
dc.identifier.urihttp://hdl.handle.net/10315/40762
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectBiology
dc.subjectEcology
dc.subjectZoology
dc.subject.keywordsDunlin
dc.subject.keywordsArctic
dc.subject.keywordsSubarctic
dc.subject.keywordsEcology
dc.subject.keywordsFox
dc.subject.keywordsRed fox
dc.subject.keywordsArctic fox
dc.subject.keywordsLemming
dc.subject.keywordsVole
dc.subject.keywordsPopulation cycles
dc.subject.keywordsHigh arctic
dc.subject.keywordsLow arctic
dc.subject.keywordsAlternative prey hypothesis
dc.subject.keywordsApparent competition
dc.titleINDIRECT EFFECTS OF LOW AMPLITUDE ARVICOLINE CYCLES ON DAILY NEST SURVIVAL OF DUNLIN (CALIDRIS ALPINA HUDSONIA) IN A RAPIDLY CHANGING CLIMATE
dc.typeElectronic Thesis or Dissertation

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