Effects of spring temperature and volcanic eruptions on wader productivity
Effects of spring temperature and volcanic eruptions on wader productivity
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DOI：
10.1111/ibi.12449
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发表时间：
2017-04-01
期刊：
影响因子：
2.1
通讯作者：
Gill, Jennifer A.
中科院分区：
文献类型：
--
作者：
Gunnarsson, Tomas Gretar;Johannesdottir, Lilja;Gill, Jennifer A.
关键的人口参数往往显示出很大的年度变化，这可能对人口增长率产生重要影响。自2011年以来，我们对冰岛黑尾Godwits Limosa limosa islandica在其大部分繁殖范围内的生产力进行了年度估计。在此期间，火山爆发导致该地区广泛的灰尘沉积。我们表明，Godwit生产力随春季温度而变化，但在火山爆发的一年，生产力几乎为零。这一罕见但极端的事件可能只产生了短期影响，而亚北极地区的持续变暖可能是这一人口持续增长的更大驱动力。
Key demographic parameters often show substantial annual variation that can have important consequences for rates of population growth. Since 2011 we have conducted annual estimates of the productivity of Icelandic Black-tailed Godwits Limosa limosa islandica over a large part of their breeding range. During this period, a volcanic eruption resulted in extensive dust deposition across the region. We show that Godwit productivity varies with spring temperatures but in the year of the volcanic eruption, productivity was reduced to almost zero. This rare but extreme event is likely to have had only a short-term influence, whereas ongoing warming of sub-Arctic regions is potentially a more substantial driver of the continued growth of this population.