Roost-site Selection by Eastern Red Bats (Lasiurus borealis)
Roost-site Selection by Eastern Red Bats (Lasiurus borealis)
复制标题
东部红蝠 (Lasiurus borealis) 的栖息地选择
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
T. Nelson
中科院分区：
文献类型：
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作者：
K. Mager;T. Nelson
为调查东部红蝙蝠(Lasiurus Borealis)在城市地区的自然栖息地选择，我们于1996年7月16日至9月30日在伊利诺伊州中部的75个个体栖息点对12只蝙蝠安装了无线电发射器。蝙蝠的栖息地种类繁多，包括成熟乔木、落叶层、茂密的草地和房屋的瓦片，但大多数栖息地(%)位于落叶大树(直径45厘米)的树叶或树干上。枫香(Liquidambar Syraciflua)和栎树(Quercus spp.)都是常用的。大多数栖息地位于树叶中，离地面5米，距离树冠边缘1.5米以内，下面几乎没有树枝阻碍飞行路线。红蝙蝠表现出对小地理区域内栖息地的忠诚，但不会对特定的栖息地表现出忠诚。个体很少在连续几天使用相同的栖息地，但连续几天使用的栖息地中，82%的个体彼此之间的距离在100米以内。在中西部的玉米带地区，森林被广泛砍伐和破碎，城市中的大树为红蝙蝠提供了重要的栖息地。
Abstract To investigate natural roost-site selection by eastern red bats (Lasiurus borealis) in an urban area we equipped 12 bats with radio-transmitters and located them at 75 individual roost sites in central Illinois from 16 July to 30 September 1996. Bats used a diversity of roosts including mature trees, leaf litter, dense grass and the shingles of houses, but the majority of roosts (89%) were in the foliage or on the trunks of large deciduous trees (>45 cm dbh). Sweetgum (Liquidambar syraciflua) and oaks (Quercus spp.) were commonly used. Most roosts were located in foliage, >5 m above the ground, within 1.5 m of the edge of the crown and with few branches beneath to obstruct flight paths. Red bats showed fidelity to roost sites within a small geographic area, but not to particular roosts. Individuals rarely used the same roost on consecutive days, but 82% of roosts used on successive days were within 100 m of each other. In the cornbelt region of the Midwest, where forests have been extensively cleared and fragmented, large urban trees provide important roosting habitat for red bats.