2015
DOI: 10.1139/cjz-2015-0016
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Linking the availability of cached food to climate change: an experimental test of the hoard-rot hypothesis

Abstract: Understanding how long-term changes in climate influence populations requires knowledge of the mechanisms by which climate influences individual success and population abundance. We explored the implications of warmer falls and winters on a nonmigratory, food-caching bird, the Gray Jay (Perisoreus canadensis (L., 1766)), in Algonquin Park, Ontario, by experimentally examining the influence of temperature on the caloric content and mass of simulated cached food. Using three sites in, north of, and south of Algo… Show more

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Cited by 19 publications
(30 citation statements)
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“…Such studies could take place in the field (e.g. [139]) or in the laboratory by borrowing many of the approaches used in the field of food science (e.g. [16,50,117]).…”
Section: Discussionmentioning
confidence: 99%
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“…Such studies could take place in the field (e.g. [139]) or in the laboratory by borrowing many of the approaches used in the field of food science (e.g. [16,50,117]).…”
Section: Discussionmentioning
confidence: 99%
“…Seven percent (7%) stored both high-and low-perishability food and only 2% (four species: the Bull-headed Shrike Lanius busephalus, Gray Jay, Siberian Jay Perisoreus infaustus and Wolverine Gulo gulo) were both long-term cachers and relied exclusively on high-perishability food (susceptibility score of 9). Population declines at the southern edge of ranges have already been documented for both Gray Jays [171] and Wolverines [6] and studies on both of these species also suggest that climate change could be contributing to population declines [62,139,171].…”
Section: Summary Of Trends and Susceptibility Estimatesmentioning
confidence: 95%
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“…While some might be able to withstand climate change due to favorable natural history traits, others might not. The increase in freeze-thaw cycles has also been suggested to be related to declines in gray jay at the southern edge of its range in the Canadian boreal forest (Sechley et al 2015). For a species like the Long-tailed Duck (Clangula hyemalis), which is globally assessed as vulnerable (Birdlife International 2012), regionally assessed as endangered (Helcom 2013), predicted to lose part of its breeding range in the study region in future due to climate change, and has several natural history traits that might make it extra vulnerable to climate change, urgent actions are needed.…”
Section: Discussionmentioning
confidence: 99%