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首页> 外文学位 >An experimental approach to understanding the impact of vernal pool buffer size on wood frogs (Rana sylvatica).
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An experimental approach to understanding the impact of vernal pool buffer size on wood frogs (Rana sylvatica).

机译：一种实验方法，用于了解春季游泳池缓冲液大小对木蛙（Rana sylvatica）的影响。

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Strategies to conserve vernal pool-dependent amphibians emphasize the maintenance of adequate areas (buffers) of terrestrial habitat surrounding the pool. I conducted a large-scale field study that specifically examined the effects of buffer width manipulation on adult and metamorph wood frogs at eleven vernal pools in a managed forest in central Maine. Buffer width treatments were 30 m or 100 m forest buffer surrounded by a 100 m clearcut, or no cut (reference). I encircled pools with drift fences and monitored wood frogs from April--November, 2004 and 2005 using pitfall traps and radio-telemetry. Buffer width had no effect on the number of immigrating adults, emigrating metamorphs, or metamorph size. Adult wood frogs from reference sites were larger than those from buffer treatment sites. Smaller buffers had lower adult recapture rates. Frogs from buffer treatment sites moved farther than those from reference sites, and females moved on average 92 m farther than males. Clearcuts were permeable, but generally avoided. Smaller buffers provide less available upland habitat, and force more wood frogs to seek alternate habitat beyond the clearcut perimeter.
机译：保存春季依赖池的两栖动物的策略强调维持池周围陆地栖息地的适当区域（缓冲带）。我进行了一项大规模的现场研究，专门研究了缓冲宽度操纵对缅因州中部一个受管理森林中十一个春季水池中成年蛙和变态木蛙的影响。缓冲区宽度处理为30 m或100 m森林缓冲区，周围有100 m的净土或无伐木（参考）。从2004年4月至11月以及2005年，我使用陷阱陷阱和无线电遥测技术，用漂流围栏围住了池子，并监测了木蛙。缓冲液的宽度对成年移民的数量，变形的变形物或变形的大小没有影响。来自参考点的成年木蛙比来自缓冲液治疗点的成年蛙大。较小的缓冲区具有较低的成人重新捕获率。来自缓冲液处理部位的青蛙比来自参考部位的青蛙移动得更远，而雌性的移动平均距离比雄性的移动了92 m。透明是可渗透的，但通常避免使用。较小的缓冲区会减少可用的高地栖息地，并迫使更多的木蛙在明确的边界之外寻找替代栖息地。

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