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dc.contributor.authorMesquita, Michel d. S.
dc.contributor.authorErikstad, Kjell E.
dc.contributor.authorSandvik, Hanno
dc.contributor.authorReiertsen, Tone
dc.contributor.authorBarrett, Robert T.
dc.contributor.authorAnker-Nilssen, Tycho
dc.contributor.authorHodges, Kevin I.
dc.contributor.authorBader, Jürgen
dc.date.accessioned2015-10-01T11:44:53Z
dc.date.available2015-10-01T11:44:53Z
dc.date.issued2015-04-29
dc.description.abstractPredicting the impact of global climate change on the biosphere has become one of the most important efforts in ecology. Ecosystems worldwide are changing rapidly as a consequence of global warming, yet our understanding of the consequences of these changes on populations is limited. The North Atlantic Oscillation (NAO) has been used as a proxy for “climate” in several ecological studies, but this index may not always explain the patterns of variation in populations examined. Other techniques to study the relationship between ecological time series and climate are therefore needed. A standard method used in climatology is to work with point maps, where point correlation, point regression or other techniques are used to identify hotspots of regions that can explain the variability observed in the time series. These hotspots may be part of a teleconnection, which is an atmospheric mode of variability that affects remote regions around the globe. The NAO is one type of teleconnection, but not all climate variability can be explained through it. In the present study we have used climate-related techniques and analyzed the yearly variation in the population growth of a Common Guillemot Uria aalge colony in the Barents Sea area spanning 30 years. We show that the NAO does not explain this variation, but that point analysis can help identify indices that can explain a significant part of it. These indices are related to changes of mean sea level pressure in the Barents Sea via the Pacific—forming a teleconnection-type pattern. The dynamics are as follows: in years when the population growth rate is higher, the patterns observed are that of an anomalous low-pressure system in the Barents Sea. These low-pressure systems are a source of heat transport into the region and they force upwelling mixing in the ocean, thus creating favorable conditions for a more successful survival and breeding of the Common Guillemot.en_US
dc.identifier.citationFrontiers in Ecology and Evolution 3:43 (2015)en_US
dc.identifier.cristinIDFRIDAID 1238044
dc.identifier.doi10.3389/fevo.2015.00043
dc.identifier.issn2296-701X
dc.identifier.urihttps://hdl.handle.net/10037/8167
dc.identifier.urnURN:NBN:no-uit_munin_7748
dc.language.isoengen_US
dc.publisherFrontiers Mediaen_US
dc.rights.accessRightsopenAccess
dc.subjectclimateen_US
dc.subjectCommon Guillemoten_US
dc.subjectNorth Atlantic Oscillationen_US
dc.subjectstatistical methodsen_US
dc.subjectpopulation growth raten_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480en_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480en_US
dc.titleThere is more to climate than the North Atlantic Oscillation: a new perspective from climate dynamics to explain the variability in population growth rates of a long-lived seabirden_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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