Rapid ecosystem change and polar bear conservation
Identifieur interne : 000F47 ( Main/Exploration ); précédent : 000F46; suivant : 000F48Rapid ecosystem change and polar bear conservation
Auteurs : Andrew E. Derocher [Canada] ; Jon Aars [Norvège] ; Steven C. Amstrup [États-Unis] ; Amy Cutting [États-Unis] ; Nick J. Lunn [Canada] ; Péter K. Molnár [États-Unis] ; Martyn E. Obbard [Canada] ; Ian Stirling [Canada] ; Gregory W. Thiemann [Canada] ; Dag Vongraven [Norvège] ; Ystein Wiig [Norvège] ; Geoffrey York [Canada]Source :
- Conservation Letters [ 1755-263X ] ; 2013-09.
Abstract
Anthropogenic global warming is occurring more rapidly in the Arctic than elsewhere, and has already caused significant negative effects on sea ice‐dependent species such as polar bears. Although observed effects have thus far been gradual, the large amount of annual variation in the climate system may cause habitat changes in individual years that exceed the long‐term trend. Such years may be below critical thresholds necessary for feeding and result in unprecedented reductions in survival, reproduction, and abundance in some populations. Here, in anticipation of sudden negative population‐level effects, we provide an overview of proactive conservation and management options. Preplanning, consultation, and coordination of management responses will be necessary to reduce the risks to human safety and other effects of catastrophic declines in habitat. Advance consideration of the costs, legality, logistical difficulties, likelihood of success, and invasiveness of potential responses will be critical to minimizing short‐term negative effects while laying the groundwork for longer‐term conservation objectives.
Url:
DOI: 10.1111/conl.12009
Affiliations:
- Canada, Norvège, États-Unis
- Montana, New Jersey, Oregon
- Portland, Princeton (New Jersey)
- Université de Princeton
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Although observed effects have thus far been gradual, the large amount of annual variation in the climate system may cause habitat changes in individual years that exceed the long‐term trend. Such years may be below critical thresholds necessary for feeding and result in unprecedented reductions in survival, reproduction, and abundance in some populations. Here, in anticipation of sudden negative population‐level effects, we provide an overview of proactive conservation and management options. Preplanning, consultation, and coordination of management responses will be necessary to reduce the risks to human safety and other effects of catastrophic declines in habitat. Advance consideration of the costs, legality, logistical difficulties, likelihood of success, and invasiveness of potential responses will be critical to minimizing short‐term negative effects while laying the groundwork for longer‐term conservation objectives.</div></front></TEI><affiliations><list><country><li>Canada</li><li>Norvège</li><li>États-Unis</li></country><region><li>Montana</li><li>New Jersey</li><li>Oregon</li></region><settlement><li>Portland</li><li>Princeton (New Jersey)</li></settlement><orgName><li>Université de Princeton</li></orgName></list><tree><country name="Canada"><noRegion><name sortKey="Derocher, Andrew E" sort="Derocher, Andrew E" uniqKey="Derocher A" first="Andrew E." last="Derocher">Andrew E. Derocher</name></noRegion><name sortKey="Derocher, Andrew E" sort="Derocher, Andrew E" uniqKey="Derocher A" first="Andrew E." last="Derocher">Andrew E. Derocher</name><name sortKey="Lunn, Nick J" sort="Lunn, Nick J" uniqKey="Lunn N" first="Nick J." last="Lunn">Nick J. Lunn</name><name sortKey="Obbard, Martyn E" sort="Obbard, Martyn E" uniqKey="Obbard M" first="Martyn E." last="Obbard">Martyn E. Obbard</name><name sortKey="Stirling, Ian" sort="Stirling, Ian" uniqKey="Stirling I" first="Ian" last="Stirling">Ian Stirling</name><name sortKey="Stirling, Ian" sort="Stirling, Ian" uniqKey="Stirling I" first="Ian" last="Stirling">Ian Stirling</name><name sortKey="Thiemann, Gregory W" sort="Thiemann, Gregory W" uniqKey="Thiemann G" first="Gregory W." last="Thiemann">Gregory W. 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Amstrup</name></noRegion><name sortKey="Cutting, Amy" sort="Cutting, Amy" uniqKey="Cutting A" first="Amy" last="Cutting">Amy Cutting</name><name sortKey="Cutting, Amy" sort="Cutting, Amy" uniqKey="Cutting A" first="Amy" last="Cutting">Amy Cutting</name><name sortKey="Molnar, Peter K" sort="Molnar, Peter K" uniqKey="Molnar P" first="Péter K." last="Molnár">Péter K. Molnár</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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