Lost at sea: genetic, oceanographic and meteorological evidence for storm-forced dispersal
Lost at sea: genetic, oceanographic and meteorological evidence for storm-forced dispersal
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迷失在海上：风暴迫使其扩散的遗传、海洋学和气象学证据
DOI：
10.1098/rsif.2011.0788
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发表时间：
2012
影响因子：
3.9
通讯作者：
Patricia L. M. Lee
中科院分区：
文献类型：
--
作者：
C. Monzón;C. Monzón;F. Dell’Amico;P. Morinière;A. Marco;L. López;G. Hays;R. Scott;R. Marsh;Patricia L. M. Lee
对于许多物种来说，幼年阶段存在大规模分散和/或个体长距离迁移，因此驱动这些各种广泛运动的过程具有重要的生活史后果。海龟是典型的长途旅行者之一，幼龟被认为是通过洋流分散的，而成年海龟则经常在遥远的繁殖地和觅食地之间穿梭。在这里，我们使用多学科海洋学、大气和遗传混合种群分析来表明幼海龟会在水流预测的地点“下游”遇到。然而，在某些情况下，幼海龟的异常现象更容易用风暴事件来解释，我们表明，根据盛行洋流，幼海龟可能会从预期的分散地迁移数千公里。因此，风暴可能是幼鸟遇到意想不到的区域的路线，这反过来又可能影响成鸟的迁徙。在气候变化情景下预测的暴风雨天气增加表明，风暴在海龟和其他生命阶段接近海洋表面的海洋群体的扩散中发挥着越来越大的作用。
For many species, there is broad-scale dispersal of juvenile stages and/or long-distance migration of individuals and hence the processes that drive these various wide-ranging movements have important life-history consequences. Sea turtles are one of these paradigmatic long-distance travellers, with hatchlings thought to be dispersed by ocean currents and adults often shuttling between distant breeding and foraging grounds. Here, we use multi-disciplinary oceanographic, atmospheric and genetic mixed stock analyses to show that juvenile turtles are encountered ‘downstream’ at sites predicted by currents. However, in some cases, unusual occurrences of juveniles are more readily explained by storm events and we show that juvenile turtles may be displaced thousands of kilometres from their expected dispersal based on prevailing ocean currents. As such, storms may be a route by which unexpected areas are encountered by juveniles which may in turn shape adult migrations. Increased stormy weather predicted under climate change scenarios suggests an increasing role of storms in dispersal of sea turtles and other marine groups with life-stages near the ocean surface.