Following the water? Landscape-scale temporal changes in bat spatial distribution in relation to Mediterranean summer drought.
Following the water? Landscape-scale temporal changes in bat spatial distribution in relation to Mediterranean summer drought.
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DOI：
10.1002/ece3.4119
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发表时间：
2018-06
影响因子：
2.6
通讯作者：
Rebelo H
中科院分区：
文献类型：
--
作者：
Amorim F;Jorge I;Beja P;Rebelo H
了解生态资源的空间分布如何塑造人类改造景观中的物种多样性和丰度是保护生物学的中心主题。然而，研究往往忽略了这种模式可能会随着时间的推移而变化，从而可能错过关键的环境制约因素，物种的持久性。这可能是特别重要的高度移动的物种，如蝙蝠，能够跟踪空间资源分布的时间变化。在这里，我们测试的假设，蝙蝠在地中海景观受到强烈影响的季节性夏季干旱期间的水供应逐步减少。我们分析了景观组成和结构对蝙蝠多样性和活动的影响，在怀孕期间，哺乳期和哺乳期后，并确定了最有影响力的变量内和跨时期。水体对蝙蝠的积极影响最大，其次是河岸栖息地和坡度较大（>30%）的地区。然而，虽然在怀孕期间，只有小景观的影响，这些增加在哺乳期和哺乳期后，突出了一个逐步加强与水栖息地在夏季干旱。栖息地模型的空间投影显示，蝙蝠多样性和活动热点的景观分布随时间发生了显着变化。在怀孕期间，热点分布的空间格局弱定义，而在哺乳期，特别是泌乳后，有一个集中的热点沿着永久流动的水道。我们的研究强调，永久流动的水道对地中海景观中的蝙蝠保护至关重要，呼吁采取措施，以应对特别是由于气候变化，取水和筑坝而导致的持续退化。更一般地说，我们的研究强调了在栖息地选择研究中考虑时间维度的重要性，如果没有时间维度，就有可能忽视栖息地的重要性，这些栖息地只在一年中的某些时候对物种的持久性至关重要。
Understanding how the spatial distribution of ecological resources shapes species’ diversity and abundance in human‐modified landscapes is a central theme in conservation biology. However, studies often disregard that such patterns may vary over time, thereby potentially missing critical environmental constraints to species persistence. This may be particularly important in highly mobile species such as bats, which are able to track temporal variations in spatial resource distribution. Here we test the hypothesis that bats in Mediterranean landscapes are strongly affected by the progressive reduction in water availability during the seasonal summer drought. We analyzed the effects of landscape composition and structure on bat diversity and activity, during pregnancy, lactation, and postlactation periods, and identified the most influential variables within and across periods. Water bodies showed the strongest positive effect on bats, followed by riparian habitats and areas with steeper (>30%) slopes. However, while during pregnancy, there were only small landscape effects, these increased during lactation and postlactation, highlighting a progressively stronger association with water habitats during the summer drought. The spatial projection of habitat models showed that the landscape distribution of bat diversity and activity hotspots changed markedly over time. During pregnancy, the spatial pattern of hotspot distribution was weakly defined, while during lactation and particularly postlactation, there was a concentration of hotspots along permanently flowing watercourses. Our study highlights that permanently flowing watercourses are critical for bat conservation in Mediterranean landscapes, calling for measures to counteract their ongoing degradation due in particular to climate change, water abstraction and damming. More generally, our study underlines the importance of considering the temporal dimension in habitat selection studies, without which there is the risk of overlooking the importance of habitats that are key for species persistence only at certain times of the year.
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影响因子：
3.7
作者：
Amorim F;Carvalho SB;Honrado J;Rebelo H
通讯作者：
Rebelo H
DOI：
10.1007/s00360-005-0043-x
发表时间：
2006-03-01
影响因子：
2
作者：
Dietz, M;Kalko, EKV
通讯作者：
Kalko, EKV
影响因子：
1
作者：
Daniel, Shai;Korine, Carmi;Pinshow, Berry
通讯作者：
Pinshow, Berry
影响因子：
1
作者：
Dalhoumi, Ridha;Morellet, Nicolas;Aulagnier, Stephane
通讯作者：
Aulagnier, Stephane
影响因子：
4.8
作者：
ANTHONY, ELP;KUNZ, TH
通讯作者：
KUNZ, TH