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Cited by 43Wildlife Ecology and ConservationAnimal Ecology and Behavior StudiesIndigenous Studies and Ecology

Long-Term Control of Peary Caribou Numbers by Unpredictable, Exceptionally Severe Snow or Ice Conditions in a Non-equilibrium Grazing System

Miller, Frank L., Barry, Samuel J.·2009·ARCTIC
DOI 10.14430/arctic130
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Abstract

The number of Peary caribou (Rangifer tarandus pearyi) on the Queen Elizabeth Islands, Canadian High Arctic, is at an all-time known low. Yet some populations are still hunted, and there is no adequate monitoring program in place to determine the consequences. We evaluate information from the Peary caribou population on the south-central Queen Elizabeth Islands as a standard for an accurate and realistic assessment of what controls Peary caribou population dynamics. Between 1973 and 1997, major population crashes related to severe winter or spring weather are known to have occurred on the south-central Queen Elizabeth Islands in four caribou-years (i.e., 1 July–30 June). Population losses were 67% in 1973–74, 33% in 1994–95, 78% in 1995–96, and 83% in 1996–97. There is no evidence for direct density-dependent responses during either the favorable weather years of population growth or during any one of the years with a disastrous die-off. It appears that Peary caribou on the Queen Elizabeth Islands are living in a non-equilibrium grazing system driven mainly by abiotic factors (emergent properties), particularly by exceptionally unfavorable snow or ice conditions. Changing levels of predation by the High Arctic gray wolf (Canis lupus arctos) compound the uncertainty. In this High Arctic ecosystem, non-equilibrium–governed population dynamics plus wolf predation represents an appropriate conceptual model for Peary caribou populations on the Canadian High Arctic islands. The application of our findings to decision making, together with an adequate monitoring program by the responsible agencies, would promote the biological management and ecological conservation of Peary caribou on the Queen Elizabeth Islands.

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Crossref · 10.14430/arctic130

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  • These extreme weather events can reduce feed availability and increase the energetic cost of foraging, which may lead to increased mortality and decreased calf recruitment.

    “All can reduce feed availability and increase the energetic cost of foraging, which may lead to increased mortality and decreased calf recruitment (Parker et al. 1975; Gunn and Adamczewski 2003; Miller and Barry 2009).”

    From Muskox status, recent variation, and uncertain future (2020) · cites this paper as Miller and Barry 2009

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Authors
Miller, F. L., & Barry, S. J.
Venue
ARCTIC
Publisher
The Arctic Institute of North America
Published
2009-09-11
Volume
62
Issue
2
ISSN
  • 0004-0843 (ISSN-L)
  • 1923-1245
DOI
10.14430/arctic130
OpenAlex
W1997877393
Cited by
43
References
42
Citations by year
2025: 1 · 2024: 2 · 2023: 1 · 2021: 1 · 2020: 4 · 2019: 8 · 2018: 3 · 2017: 3 · 2016: 5 · 2015: 2 · 2014: 2 · 2013: 1 · 2012: 4
FWCI
2.92
Type
journal article
Language
en
Open access
closed
Locations
ARCTIC (publishedVersion)
Topics
  • Physical Sciences › Environmental Science › Ecology › Wildlife Ecology and Conservation
  • Physical Sciences › Environmental Science › Ecology › Animal Ecology and Behavior Studies
  • Health Sciences › Health Professions › General Health Professions › Indigenous Studies and Ecology
Keywords
Peary caribou, Rangifer tarandus pearyi, population dynamics, population collapse, snow and ice conditions, abiotic drivers, density dependence, Queen Elizabeth Islands, Canadian High Arctic, wildlife management, population monitoring

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