The Dynamics of the North Atlantic Subpolar Gyre Introduces Predictability to the Breeding Success of Kittiwakes
The Dynamics of the North Atlantic Subpolar Gyre Introduces Predictability to the Breeding Success of Kittiwakes
复制标题
北大西洋副极地环流的动力学为三趾鸥的繁殖成功提供了可预测性
DOI：
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发表时间：
2017
影响因子：
3.7
通讯作者：
S. Pacariz
中科院分区：
文献类型：
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作者：
H. Hátún;B. Olsen;S. Pacariz
由于开放的海洋副极地大西洋是世界上最可预测的地区之一，我们的结果保持承诺预测的一般生产海鸟种群在一个大的地理区域毗邻的北方北大西洋和北极地中海。自20世纪90年代中期以来，北大西洋的黑腿三趾鸥里萨三趾鸥种群数量明显减少，部分原因是繁殖季节一再失败。我们展示了法罗群岛三趾鸥殖民地的繁殖成功与副极地环流指数之间的密切联系。成功的繁殖会伴随着一个扩大的副极地环流的冬季，由此推断，冰岛西南部的浮游动物丰度增加。因此，在非繁殖季节和繁殖前季节，西北大西洋的环境条件可能很重要。此外，副极地环流动力学可能会影响当地的食物丰度在法罗群岛的货架上繁殖季节。
Since the open-ocean subpolar Atlantic is amongst the most predictable regions in the world, our results hold promise for predicting the general production to seabird populations over a large geographical region adjacent to the northern North Atlantic and the Arctic Mediterranean. Colonies of black-legged kittiwakes Rissa tridactyla in the North Atlantic have declined markedly since the mid-1990s, partly due to repeatedly failing breeding seasons. We show a close link between the breeding success of a kittiwake colony in the Faroe Islands and the subpolar gyre index. Successful breeding follows winters with an expanded subpolar gyre and, by inference, increased zooplankton abundances southwest of Iceland. The environmental conditions in the northwestern Atlantic during the non-breeding and pre-breeding seasons might therefore be important. Furthermore, the subpolar gyre dynamics might influence the local food abundance on the Faroe shelf during the breeding season.