{"id":3586,"date":"2017-08-21T23:43:00","date_gmt":"2017-08-21T23:43:00","guid":{"rendered":"https:\/\/seapop.no\/?p=3586"},"modified":"2021-02-26T12:23:28","modified_gmt":"2021-02-26T11:23:28","slug":"migration-strategy-may-determine-climate-impact-on-eiders","status":"publish","type":"post","link":"https:\/\/seapop.no\/en\/2017\/08\/migration-strategy-may-determine-climate-impact-on-eiders\/","title":{"rendered":"Migration strategy may determine climate impact on eiders"},"content":{"rendered":"\n

Studying three different populations of common eiders, researchers have demonstrated that weather conditions on wintering grounds affect the survival of the birds. However, this comes about in different ways and there are different degrees of climate impact, not only between populations, but also among individuals within a population.<\/strong><\/strong><\/strong><\/strong><\/strong><\/p>\n\n\n\n

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Being able to answer how wild-ranging animals respond to climate change is of great importance to researchers and managers. One should, however, be careful when drawing conclusions for species without having tested for internal variation. This is well demonstrated in a French-Norwegian-Canadian study that was published recently. Data on female eiders from a sub-arctic population on the coast of North-Norway and two arctic colonies in Canada and Svalbard, were investigated, and the objective was to answer whether different migration strategies between and within populations would result in an equivalent variation in survival rate under the influence of changing climatic winter conditions. The three populations in question winter in different areas and experience very different winter climate, which, in this study was proxied using the North-Atlantic oscillation (NAO).<\/p>\n\n\n\n

Read the article:<\/h4>\n\n\n\n