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dc.contributor.authorHanssen, Sveinn Are
dc.contributor.authorMoe, Børge
dc.contributor.authorBårdsen, Bård-Jørgen
dc.contributor.authorHanssen, Frank Ole
dc.contributor.authorGabrielsen, Geir W.
dc.date.accessioned2023-07-10T10:05:04Z
dc.date.available2023-07-10T10:05:04Z
dc.date.created2013-09-06T13:47:20Z
dc.date.issued2013
dc.identifier.citationEcology and Evolution. 2013, 3 (10), 3554-3564.en_US
dc.identifier.issn2045-7758
dc.identifier.urihttps://hdl.handle.net/11250/3077451
dc.description.abstractAnthropogenic impact on the environment and wildlife are multifaceted and far-reaching. On a smaller scale, controlling for predators has been increasing the yield from local natural prey resources. Globally, human-induced global warming is expected to impose severe negative effects on ecosystems, an effect that is expected to be even more pronounced in the scarcely populated northern latitudes. The clearest indication of a changing Arctic climate is an increase in both air and ocean temperatures leading to reduced sea ice distribution. Population viability is for long-lived species dependent on adult survival and recruitment. Predation is the main mortality cause in many bird populations, and egg predation is considered the main cause of reproductive failure in many birds. To assess the effect of predation and climate, we compared population time series from a natural experiment where a trapper/down collector has been licensed to actively protect breeding common eiders Somateria mollissima (a large seaduck) by shooting/chasing egg predators, with time series from another eider colony located within a nature reserve with no manipulation of egg predators. We found that actively limiting predator activity led to an increase in the population growth rate and carrying capacity with a factor of 3–4 compared to that found in the control population. We also found that population numbers were higher in years with reduced concentration of spring sea ice. We conclude that there was a large positive impact of human limitation of egg predators, and that this lead to higher population growth rate and a large increase in size of the breeding colony. We also report a positive effect of warming climate in the high arctic as reduced sea-ice concentrations was associated with higher numbers of breeding birds. Carrying capacity, climate change, high Arctic, population growth rate, predator effects, sea ice, Svalbard.en_US
dc.description.abstractA natural antipredation experiment: predator control and reduced sea ice increases colony size in a long-lived ducken_US
dc.language.isoengen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjectCarrying capacityen_US
dc.subjectclimate changeen_US
dc.subjectpopulation growth rateen_US
dc.subjectpredatoreffectsen_US
dc.subjectsea iceen_US
dc.subjectSvalbarden_US
dc.subjecthigh Arcticen_US
dc.titleA natural antipredation experiment: predator control and reduced sea ice increases colony size in a long-lived ducken_US
dc.title.alternativeA natural antipredation experiment: predator control and reduced sea ice increases colony size in a long-lived ducken_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2013 The Authorsen_US
dc.source.pagenumber3554-3564en_US
dc.source.volume3en_US
dc.source.journalEcology and Evolutionen_US
dc.source.issue10en_US
dc.identifier.doi10.1002/ece3.735
dc.identifier.cristin1047536
cristin.unitcode7511,4,0,0
cristin.unitcode7511,2,0,0
cristin.unitcode7511,7,0,0
cristin.unitnameTromsø
cristin.unitnameAvdeling for terrestrisk økologi
cristin.unitnameFellestjenestene
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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