Investigating Indirect Anthropogenic Effects on Spatial Variation in Nest Predation Risk and Shorebird Nest Success in Churchill, Manitoba

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dc.contributor.advisorMcKinnon, Laura
dc.contributor.authorBrown, Taylor Marie
dc.date.accessioned2020-05-11T12:37:17Z
dc.date.available2020-05-11T12:37:17Z
dc.date.copyright2019-09
dc.date.issued2020-05-11
dc.date.updated2020-05-11T12:37:16Z
dc.degree.disciplineBiology
dc.degree.levelMaster's
dc.degree.nameMSc - Master of Science
dc.description.abstractNest predation risk increases at lower latitudes, and some shorebirds nesting at the southernmost limits of their ranges in Churchill, Manitoba tend to experience lower nest success than those at other Arctic sites. This study investigates whether proximity to human settlement affects predation risk, predator abundance and shorebird daily nest survival near Churchill by measuring these variables at varying distances from town. Camera traps at nests confirmed that foxes were important nest predators. A nests distance to town was negatively correlated with its distance to the nearest fox den. Predation risk decreased as distances from fox dens and Parasitic Jaeger nests increased, and at high abundances of avian predators. Shorebird daily nest survival tended to be lower near fox dens and higher with a camera present. Overall, these results suggest that shorebirds may benefit from proximity to town due to reduced fox denning activity close to town.
dc.identifier.urihttps://hdl.handle.net/10315/37356
dc.languageen
dc.rightsAuthor owns copyright, except where explicitly noted. Please contact the author directly with licensing requests.
dc.subjectEcology
dc.subject.keywordsAvian
dc.subject.keywordsEcology
dc.subject.keywordsPredator
dc.subject.keywordsPrey
dc.subject.keywordsAnthropogenic
dc.subject.keywordsShorebird
dc.subject.keywordsArtificial nest
dc.subject.keywordsArtificial nest experiment
dc.subject.keywordsPredator-prey relationship
dc.subject.keywordsNest survival
dc.subject.keywordsPlover
dc.subject.keywordsWhimbrel
dc.subject.keywordsSandpiper
dc.subject.keywordsDunlin
dc.subject.keywordsGodwit
dc.subject.keywordsDowitcher
dc.subject.keywordsArctic fox
dc.subject.keywordsParasitic jaeger
dc.subject.keywordsDiet
dc.subject.keywordsEgg
dc.subject.keywordsCamera trap
dc.subject.keywordsSubarctic
dc.subject.keywordsArctic
dc.subject.keywordsRed fox
dc.subject.keywordsDSR
dc.subject.keywordsDaily nest survival
dc.subject.keywordsHuman
dc.subject.keywordsSettlement
dc.subject.keywordsHudson bay
dc.subject.keywordsBreeding
dc.subject.keywordsIncubation
dc.subject.keywordsTemperature logger
dc.subject.keywordsHatch
dc.subject.keywordsPredation rate
dc.subject.keywordsDen
dc.subject.keywordsSurvey
dc.subject.keywordsHerring gull
dc.subject.keywordsCommon raven
dc.subject.keywordsSandhill crane
dc.titleInvestigating Indirect Anthropogenic Effects on Spatial Variation in Nest Predation Risk and Shorebird Nest Success in Churchill, Manitoba
dc.typeElectronic Thesis or Dissertation

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