North Atlantic Oscillation and timing of spring migration in birds
North Atlantic Oscillation and timing of spring migration in birds
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DOI：
10.1098/rspb.2002.2236
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发表时间：
2003-02-07
影响因子：
4.7
通讯作者：
Hüppop, K
中科院分区：
文献类型：
--
作者：
Hüppop, O;Hüppop, K
自1909年以来，候鸟一直被困在黑尔戈兰岛（北海东南部），在过去的四十年中，方法和采样工作保持不变。在12个短/中距离移民和12个长距离移民（23雀加上欧洲山鸡）样本量足以计算平均春季通过（MSP）的时间，并将这些与气候变化。除了一个物种，通过Helgoland途中到他们的繁殖区（主要是在斯堪的纳维亚半岛），表现出一种趋势，对早期的MSP时间，这是显着的7个短/中距离移民和10个长距离移民。平均迁移时间每年提前0.05-0.28天，短/中距离迁移与长距离迁移没有区别。在24种中的23种中，较早的msp时间与当地较温暖的msp温度相吻合（分别在两组的11种和7种中显着）。更令人吃惊的是，在过去四十年里，它与一个大规模现象-北大西洋涛动（NAO）-的关系。同样，在23的24个物种，较早的msp时间与较高的NAO指数（显着分别在9和12个物种）。NAO指数还可以解释春季迁移策略的差异和相似性，以及欧洲内部的迁移路线。
Migrant birds have been trapped on the island of Helgoland (southeastern North Sea) since 1909, with methods and sampling effort remaining unchanged throughout the last four decades. In 12 short/medium-distance migrants and 12 long-distance migrants (23 passerines plus the European woodcock) sample sizes were sufficient to calculate mean spring passage (msp) times and to relate these to climate change. All but one species, passing Helgoland en route to their breeding areas (mainly in Scandinavia), show a trend towards earlier msp-time, which is significant in 7 short/medium-distance migrants and 10 long-distance migrants. The msp-times advanced by 0.05-0.28 days per year, short/medium-distance migrants not differing from long-distance migrants. In 23 out of the 24 species, earlier msp-times coincide with local warmer msp-temperatures (significantly in 11 and 7 species of the two groups, respectively). Even more striking is the relation to a large-scale phenomenon, the North Atlantic Oscillation (NAO), during the last four decades. Again, in 23 out of the 24 species, an earlier msp-time coincides with higher NAO indices (significantly in 9 and 12 species, respectively). The NAO index can also explain differences and similarities in spring migration strategies, as well as migration routes within Europe.