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dc.contributor.authorKwon, Enubi
dc.contributor.authorEnglish, Willow B.
dc.contributor.authorWeiser, Emily L.
dc.contributor.authorFranks, Samantha E.
dc.contributor.authorHodkinson, David J.
dc.contributor.authorLank, David B.
dc.contributor.authorSandercock, Brett K.
dc.date.accessioned2018-07-24T17:01:38Z
dc.date.available2018-07-24T17:01:38Z
dc.date.issued2017
dc.identifier.urihttp://hdl.handle.net/10919/84321
dc.description.abstractBiological impacts of climate change are exemplified by shifts in phenology. As the timing of breeding advances, the within-season relationships between timing of breeding and reproductive traits may change and cause long-term changes in the population mean value of reproductive traits. We investigated long-term changes in the timing of breeding and within-season patterns of clutch size, egg volume, incubation duration, and daily nest survival of three shorebird species between two decades. Based on previously known within-season patterns and assuming a warming trend, we hypothesized that the timing of clutch initiation would advance between decades and would be coupled with increases in mean clutch size, egg volume, and daily nest survival rate. We monitored 1,378 nests of western sandpipers, semipalmated sandpipers, and red-necked phalaropes at a subarctic site during 1993–1996 and 2010–2014. Sandpipers have biparental incubation, whereas phalaropes have uniparental incubation. We found an unexpected long-term cooling trend during the early part of the breeding season. Three species delayed clutch initiation by 5 days in the 2010s relative to the 1990s. Clutch size and daily nest survival showed strong within-season declines in sandpipers, but not in phalaropes. Egg volume showed strong within-season declines in one species of sandpiper, but increased in phalaropes. Despite the within-season patterns in traits and shifts in phenology, clutch size, egg volume, and daily nest survival were similar between decades. In contrast, incubation duration did not show within-season variation, but decreased by 2 days in sandpipers and increased by 2 days in phalaropes. Shorebirds demonstrated variable breeding phenology and incubation duration in relation to climate cooling, but little change in nonphenological components of traits. Our results indicate that the breeding phenology of shorebirds is closely associated with the temperature conditions on breeding ground, the effects of which can vary among reproductive traits and among sympatric species.
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada
dc.description.sponsorshipNSERC: STPSC 357054
dc.description.sponsorshipAlaska Department of Fish and Game
dc.description.sponsorshipADF&G: State Wildlife Grant T-16
dc.description.sponsorshipOffice of Polar Programs of the National Science Foundation
dc.description.sponsorshipNSF: ARC-1023396
dc.format.mimetypeapplication/pdfen_US
dc.language.isoen_US
dc.publisherWiley
dc.rightsCreative Commons Attribution 4.0 International (CC BY 4.0)*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.subjectbreeding phenology
dc.subjectCalidris mauri
dc.subjectCalidris pusilla
dc.subjectclimate change
dc.subjectdaily nest survival
dc.subjectincubation duration
dc.subjectPhalaropus lobatus
dc.subjectseasonality
dc.titleDelayed egg-laying and shortened incubation duration of Arctic-breeding shorebirds coincide with climate coolingen_US
dc.typeArticle - Refereeden_US
dc.title.serialEcology and Evolution
dc.identifier.doihttps://doi.org/10.1002/ece3.3733
dc.identifier.volume7
dc.identifier.issue4
dc.type.dcmitypeTexten_US


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Creative Commons Attribution 4.0 International (CC BY 4.0)
License: Creative Commons Attribution 4.0 International (CC BY 4.0)