The impacts of environmental variability and climate change on the migration and breeding phenology of a long-distance migratory songbird

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dc.contributor.authorShave, Amanda
dc.contributor.examiningcommitteeGarroway, Colin (Biological Sciences) Davoren, Gail (Biolgical Sciences) Koper, Nicola (Natural Resources Institute)en_US
dc.contributor.supervisorFraser, Kevin (Biological Sciences)en_US
dc.date.accessioned2017-09-07T18:28:44Z
dc.date.available2017-09-07T18:28:44Z
dc.date.issued2017
dc.degree.disciplineBiological Sciencesen_US
dc.degree.levelMaster of Science (M.Sc.)en_US
dc.description.abstractClimate change is advancing spring phenology but it remains unclear whether migratory birds are able to adjust their timing to match these changes. Purple martins (Progne subis) are long-distance migrants, and part of a functional taxon (aerial insectivores) that are undergoing population declines. My objectives were to: 1) determine if environmental variability during spring migration predicts individual timing of migration, and 2) determine if laying date is phenotypically plastic to spring temperatures. I found that spring migration phenology was not predicted by environmental factors and individual martins had repeatable spring migration timing. Laying date was earlier with warmer temperatures, fledgling numbers increased with earlier laying dates, and selection pressure for earlier breeding did not change with temperature. Overall, my results suggest that timing is constrained through much of the annual cycle, but purple martins can adjust to current climate conditions by varying their laying date with temperature during the breeding period.en_US
dc.description.noteOctober 2017en_US
dc.identifier.urihttp://hdl.handle.net/1993/32501
dc.language.isoengen_US
dc.rightsopen accessen_US
dc.subjectPurple Martinen_US
dc.subjectProgne subisen_US
dc.subjectClimate Changeen_US
dc.subjectBreeding Phenologyen_US
dc.subjectMigration Phenologyen_US
dc.subjectCitizen Scienceen_US
dc.titleThe impacts of environmental variability and climate change on the migration and breeding phenology of a long-distance migratory songbirden_US
dc.typemaster thesisen_US
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