Meta-population evidence of oriented chain migration in northern gannets (Morus bassanus)
Meta-population evidence of oriented chain migration in northern gannets (Morus bassanus)
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DOI：
10.1890/110194
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发表时间：
2012-06-01
影响因子：
10.3
通讯作者：
Gremillet, David
中科院分区：
文献类型：
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作者：
Fort, Jerome;Pettex, Emeline;Gremillet, David
虽然在许多陆地鸟类物种中已经确定了定向迁徙，但海鸟在繁殖季节后的迁徙通常被认为是分散的。我们使用地理定位标签，揭示繁殖后的运动和冬季分布的北方塘鹅（桑）在一个元种群规模。通过关注欧洲塘鹅的五个繁殖地，我们发现它们的繁殖地和越冬地由一条主要的飞行路线连接，该飞行路线沿着西欧和非洲的海岸。此外，最大冬季距离殖民地是相似的殖民地，尽管他们的纬度范围很广。与一般的意见，大型远洋鸟类，如塘鹅有无限的范围超出繁殖季节，我们的研究结果强烈建议定向链迁移北方塘鹅（一种模式，人口均匀向南移动），并强调元人口的方法研究海鸟运动的好处。我们认为，将这些进程纳入海洋管理计划对于改善海洋生物多样性养护工作至关重要。
Although oriented migrations have been identified in many terrestrial bird species, the post-breeding-season movements of seabirds are generally regarded as dispersive. We used geolocator tags to reveal post-breeding movements and winter distribution of northern gannets (Morus bassanus) at a meta-population scale. By focusing on five breeding colonies of European gannets, we show that their breeding and wintering grounds are connected by a major flyway running along the coasts of Western Europe and Africa. Moreover, maximum winter distance to colony was similar across colonies despite their wide latitudinal range. In contrast with the general opinion that large pelagic birds such as gannets have unlimited ranges beyond the breeding season, our findings strongly suggest oriented chain migration in northern gannets (a pattern in which populations move uniformly southward) and highlight the benefit of meta-population approaches for studying seabird movements. We argue that the inclusion of such processes in ocean management plans is essential to improve efforts in marine biodiversity conservation.