Homage to Hersteinsson and Macdonald: climate warming and resource subsidies cause red fox range expansion and Arctic fox decline

Climate change can have a marked effect on the distribution and abundance of some species, as well as their interspecific interactions. In 1992, before ecological effects of anthropogenic climate change had developed into a topical research field, Hersteinsson and Macdonald published a seminal paper...

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Vydáno v:Polar research Ročník 36; číslo sup1; s. 3 - 15
Hlavní autoři: Elmhagen, Bodil, Berteaux, Dominique, Burgess, Robert M., Ehrich, Dorothee, Gallant, Daniel, Henttonen, Heikki, Ims, Rolf A., Killengreen, Siw T., Niemimaa, Jukka, Norén, Karin, Ollila, Tuomo, Rodnikova, Anna, Sokolov, Aleksandr A., Sokolova, Natasha A., Stickney, Alice A., Angerbjörn, Anders
Médium: Journal Article
Jazyk:angličtina
Vydáno: Spånga Routledge 01.01.2017
Open Academia
Norwegian Polar Institute
Témata:
Animal behavior
Anthropogenic factors
BP: British Petroleum
Climate change
Contraction
Culling
Dens
Distribution
Ecological effects
Ecosystem assessment
Ecosystems
Environmental changes
Food
Food availability
Food resources
Food supply
Foxes
Global warming
Habitats
Hypotheses
Interactions
Interspecific
Interspecific relationships
IUCN: International Union for Conservation of Nature and Natural Resources
mesopredator release
Predation
Range extension
range shift
Refugia
resource subsidy
Species
Tundra
Vulpes lagopus
Vulpes vulpes
Canada
Alaska
United States > US
Arctic region
ISSN:1751-8369, 0800-0395, 1751-8369
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Popis
Shrnutí:Climate change can have a marked effect on the distribution and abundance of some species, as well as their interspecific interactions. In 1992, before ecological effects of anthropogenic climate change had developed into a topical research field, Hersteinsson and Macdonald published a seminal paper hypothesizing that the northern distribution limit of the red fox (Vulpes vulpes) is determined by food availability and ultimately climate, while the southern distribution limit of the Arctic fox (Vulpes lagopus) is determined by interspecific competition with the larger red fox. This hypothesis has inspired extensive research in several parts of the circumpolar distribution range of the Arctic fox. Over the past 25 years, it was shown that red foxes can exclude Arctic foxes from dens, space and food resources, and that red foxes kill and sometimes consume Arctic foxes. When the red fox increases to ecologically effective densities, it can cause Arctic fox decline, extirpation and range contraction, while conservation actions involving red fox culling can lead to Arctic fox recovery. Red fox advance in productive tundra, concurrent with Arctic fox retreat from this habitat, support the original hypothesis that climate warming will alter the geographical ranges of the species. However, recent studies show that anthropogenic subsidies also drive red fox advance, allowing red fox establishment north of its climate-imposed distribution limit. We conclude that synergies between anthropogenic subsidies and climate warming will speed up Arctic ecosystem change, allowing mobile species to establish and thrive in human-provided refugia, with potential spill-over effects in surrounding ecosystems.
Bibliografie:ObjectType-Article-1
SourceType-Scholarly Journals-1
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ISSN:1751-8369
0800-0395
1751-8369
DOI:10.1080/17518369.2017.1319109