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首页> 外文期刊>Southeastern naturalist >Winter Roosting Ecology of Silver-Haired Bats in an Arkansas Forest
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Winter Roosting Ecology of Silver-Haired Bats in an Arkansas Forest

机译：阿肯色州森林中银发蝙蝠的冬季栖息生态

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Although summer roosting by Lasionycteris noctivagans (Silverhaired Bats) has been studied in various ecological regions of North America, no quantitative studies have examined winter roost selection. We radiotracked 11 bats to 31 day-roosts during winter in forests of the Ouachita Mountains, AR. We quantified roost structures and examined the association between roosts and forest stands. We also examined effects of temperature on roost use. Ninety percent of roosts were in trees (5 species): 55% of all roosts were under loose bark on the bole of live overstory Pinus echinata (Shortleaf Pine), 3% of roosts were in a rock outcrop, and 6% were at ground level (under a tree root or in a cavity at the base of a live pine). Bats selected pine or pine-hardwoods stands >50 years old, and used forest stands 15?50 years of age less than their availability. Roost locations were influenced by temperature and solar radiation; most (90%) roosts were on southern topographic aspects, and bats roosted in the rock outcrop or on the ground on colder days (<5 °C). Retaining open pine and hardwood stands >50 years old on south slopes would likely maintain roosting habitat for wintering Silver-haired Bats in the Ouachita Mountains.
机译：尽管在北美的各个生态区域都对夜蛾（Lasionycteris noctivagans）（银毛蝙蝠）进行的夏季栖息进行了研究，但尚未进行定量研究来研究冬季栖息地的选择。冬季，我们在AR瓦希塔山森林中将11只蝙蝠无线电跟踪到31个栖所。我们量化了栖息地的结构，并研究了栖息地和林分之间的联系。我们还研究了温度对栖息地使用的影响。 90％的栖息地位于树木（5种）中：所有栖息地中55％位于活的树皮松果菊（Shortleaf Pine）的树干上的松树皮下，3％的栖息地位于岩石露头中，6％处于地面水平（在树根下或在活松树基部的空腔中）。蝙蝠选用的松树或松木阔叶树龄超过50年，而二手林的树龄比可用树龄低15至50年。栖息地的位置受温度和太阳辐射的影响;大多数（90％）栖息地位于南部地形，蝙蝠在较冷的日子（<5°C）栖息在露头或地面。在南坡上保留50岁以上的松树和阔叶阔叶林，可能会维持栖息在瓦希塔山（Ouachita Mountains）的银发蝙蝠越冬的栖息地。

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