Climate change and habitat heterogeneity drive a population increase in Common Buzzards Buteo buteo through effects on survival
Climate change and habitat heterogeneity drive a population increase in Common Buzzards Buteo buteo through effects on survival
复制标题
气候变化和栖息地异质性通过影响生存而推动普通鵟种群数量的增加
作者：
Jonker;Chakarov;Krüger
气候条件的变化对野生种群的影响是最近许多研究的主题。大多数注意力集中在气候变化对低营养级物种的直接影响和气候变化的负面后果上。然而，更深入地了解气候变化如何影响顶级捕食者至关重要，因为它们是对生态系统产生不成比例影响的关键物种。研究顶级捕食者的生存需要来自长期研究的基于个体的数据，并且由于气候对较低营养水平的影响而变得复杂。在这里，我们评估气候如何影响普通BuzzardButeo buteo的生存。我们分析了1989年至2011年期间670名男性和669名女性的生存情况，在此期间，我们的研究人群翻了两番。我们使用标记-再捕获生存分析的个别reightings的繁殖成人，以确定最好的解释生存的环境因素。北大西洋涛动（NAO）指数的下降在很大程度上解释了人口增长的程度上增加了生存。这可能是由于田鼠在干燥的条件下和积雪覆盖下的生存率较高所致。雄性比雌性的生存率增加得更多，这可能是由于雄性对冬季食物供应的敏感性更高，这是由于它们的体重更小。然而，我们也发现，NAO的影响强烈依赖于个人生活的地区，特别是女性。这可能是由于我们研究区域某些地方的鹰鸮布。这项研究表明，气候变化可以通过与猎物的相互作用对较高营养水平的物种产生复杂的影响。
The effect of changing climatic conditions on wild populations has been the subject of much recent research. Most attention has been on the direct effects of climate changes on species of lower trophic levels and on the negative consequences of climate change. However, a deeper understanding of how climate change affects apex predators is vital, as they are keystone species that have a disproportionate effect on ecosystems. Studying survival in an apex predator requires individual‐based data from long‐term studies and is complicated by the integration of climatic effects on lower trophic levels. Here we assess how climate affects the survival of the Common BuzzardButeo buteo. We analysed the survival of 670 males and 669 females over the period 1989–2011, during which time our study population quadrupled. We used mark–recapture survival analysis of individual resightings of breeding adults to identify the environmental factors best explaining survival. A decrease in the North Atlantic Oscillation (NAO) index increased survival to an extent that largely explains the population increase. This might be caused by higher Common VoleMicrotus arvalissurvival in drier conditions and under snow cover. Buzzard survival appeared to increase more for males than for females, possibly due to the males' higher sensitivity to winter food availability resulting from their smaller body mass. However, we also found that the effect of NAO strongly depended on the area in which individuals lived, especially for females. This may have been caused by the recolonization of Eagle OwlsBubo buboin some parts of our study area. This study suggests that climatic changes can have complex effects on species of higher trophic levels via an interaction with their prey.
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影响因子：
2.4
作者：
Boerner, M.;Krueger, O.
通讯作者：
Krueger, O.
影响因子：
5.2
作者：
Chakarov, N.;Boerner, M.;Krueger, O.
通讯作者：
Krueger, O.
影响因子：
8.8
作者：
Borrvall, C;Ebenman, B
通讯作者：
Ebenman, B
影响因子：
3.4
作者：
Lehikoinen, Aleksi;Byholm, Patrik;Henttonen, Heikki
通讯作者：
Henttonen, Heikki
影响因子：
3.3
作者：
Wynn, Russell B.;Josey, Simon A.;Yesou, Pierre
通讯作者：
Yesou, Pierre