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From process to pattern: how fluctuating predation risk impacts the stress axis of snowshoe hares during the 10-year cycle

Dates

Year
2011

Citation

Sheriff, Michael J., Krebs, Charles J., and Boonstra, Rudy, 2011, From process to pattern: how fluctuating predation risk impacts the stress axis of snowshoe hares during the 10-year cycle: Oecologia, v. 166, no. 3, p. 593-605.

Summary

Predation is a central organizing process affecting populations and communities. Traditionally, ecologists have focused on the direct effects of predation--the killing of prey. However, predators also have significant sublethal effects on prey populations. We investigated how fluctuating predation risk affected the stress physiology of a cyclic population of snowshoe hares (Lepus americanus) in the Yukon, finding that they are extremely sensitive to the fluctuating risk of predation. In years of high predator numbers, hares had greater plasma cortisol levels at capture, greater fecal cortisol metabolite levels, a greater plasma cortisol response to a hormone challenge, a greater ability to mobilize energy and poorer body condition. [...]

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  • Northwest Boreal Landscape Conservation Cooperative

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NWBLCC20160627

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Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1007/s00442-011-1907-2
ISSN http://sciencebase.gov/vocab/identifierScheme 0029-8549

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