The trans-boundary importance of artificial bat hibernacula in managed European forests
The trans-boundary importance of artificial bat hibernacula in managed European forests
复制标题
人工冬眠蝙蝠在欧洲管理森林中的跨界重要性
DOI：
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发表时间：
2014
影响因子：
3.4
通讯作者：
S. Kramer‐Schadt
中科院分区：
文献类型：
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作者：
C. Voigt;L. Lehnert;A. Popa‐Lisseanu;M. Ciechanowski;P. Estók;Florian Gloza;Tamás Görföl;Matthias Göttsche;Carsten Harrje;Meike Hötzel;Tobias Teige;Reiner Wohlgemuth;S. Kramer‐Schadt
许多欧洲迁徙的蝙蝠物种在大型空心树中冬眠，这是当今造林中日益减少的资源。在这里，我们报告的重要性，人造冬眠，以支持跨境人口的蝙蝠（Nyctalus蝙蝠），一个物种，在整个欧洲进行季节性的长距离运动。在冬季，我们调查了九个蝙蝠栖息地（八个人工和一个自然）在德国，并收集了小簇的毛皮，共608个人。然后，我们测量了毛皮角蛋白中不可交换氢的稳定同位素比率，并使用改进的isoscape起源模型估计了移民的起源，该模型包括预期飞行距离和迁移方向的信息。根据稳定同位素特征，78%的冬眠蝙蝠来自当地种群。其余22%的冬眠动物居住者来自遥远的人群，大多来自瑞典、波兰和波罗的海国家等北方或东部国家的地方。我们的研究结果证实，许多蝙蝠跨越一个或几个政治边界在迁移过程中。关于冬眠蝙蝠繁殖起源的数据也表明，人工栖息地不仅对当地而且对遥远的种群都很重要。在管理森林中保护自然和人工冬眠区可以支持迁徙蝙蝠的跨界种群，当空心树在管理森林中稀缺时。
Many European migratory bat species hibernate in large hollow trees, a decreasing resource in present day silviculture. Here, we report on the importance of man-made hibernacula to support trans-boundary populations of noctule bats (Nyctalus noctula), a species that performs seasonal long distance movements throughout Europe. In winter, we surveyed nine bat roosts (eight artificial and one natural) in Germany and collected small tufts of fur from a total of 608 individuals. We then measured the stable isotope ratios of the non-exchangeable hydrogen in fur keratin and estimated the origin of migrants using a refined isoscape origin model that included information on expected flight distances and migration directions. According to the stable isotope signature, 78 % of hibernating bats originated from local populations. The remaining 22 % of hibernacula occupants originated from distant populations, mostly from places in northern or eastern countries such as Sweden, Poland and Baltic countries. Our results confirm that many noctule bats cross one or several political borders during migration. Data on the breeding origin of hibernating noctule bats also suggest that artificial roosts may not only be important for local but also for distant populations. Protection of natural and artificial hibernacula in managed forests may support the trans-boundary populations of migratory bats when hollow trees are scarce in managed forests.