WHERE DO THEY GO? YEAR-ROUND MOVEMENTS REVEAL A SHIFT IN THE DISTRIBUTION OF SOUTHERN GIANT PETRELS DURING WINTER

L. Krüger, E. Petersen, M. Petry
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Abstract

: We aimed to evaluate the year-round distribution of an Antarctic population of the Southern Giant Petrel Macronectes giganteus. Twelve BAS MK9 geolocators were recovered in November 2011 from animals tagged in January 2011. We applied month Fixed Kernel Densities and compared the geographical positions of individuals between breeding and non-breeding periods. During breeding, petrels remained predominantly above the 60ºS parallel, but during the non-breeding period they used mostly the areas below 60ºS, with many individuals using the coast of Argentina, west of Falkland Islands. Th e results are exciting in the sense that now the information on where the Southern Giant Petrels spend the winter will allow the understanding of the infl uences of climate and fi sheries over the population dynamics.
他们去了哪里?全年的迁徙揭示了南方巨海燕在冬季分布的变化
我们的目的是评估南极巨海燕(Macronectes giganteus)种群的全年分布。2011年11月从2011年1月标记的动物身上回收了12个BAS MK9地理定位器。采用月固定核密度法,比较了繁殖期和非繁殖期个体的地理位置。在繁殖期,海燕主要停留在南纬60度以上,但在非繁殖期,海燕主要栖息在南纬60度以下的地区,其中许多海燕栖息在福克兰群岛西部的阿根廷海岸。从某种意义上说,这些结果令人兴奋,因为现在关于南方巨海燕在哪里过冬的信息将使人们了解气候和渔业对种群动态的影响。
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