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首页> 外文期刊>Oryx >An assessment of carnivore relative abundance and density in the eastern rainforests of Madagascar using remotely-triggered camera traps
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An assessment of carnivore relative abundance and density in the eastern rainforests of Madagascar using remotely-triggered camera traps

机译：使用远程触发的相机陷阱评估马达加斯加东部雨林中食肉动物的相对丰度和密度

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Despite major efforts to understand and conserve Madagascar's unique biodiversity, relatively little is known about the island's carnivore populations. We therefore deployed 43 camera-trap stations in Ranomafana National Park, Madagascar during June-August 2007 to evaluate the efficacy of this method for studying Malagasy carnivores and to estimate the relative abundance and density of carnivores in the eastern rainforest. A total of 755 camera-trap nights provided 1,605 photographs of four endemic carnivore species (fossa Cryptoprocta ferox, Malagasy civet Fossa fossana, ring-tailed mongoose Galidia elegans and broad-striped mongoose Galidictus fasciata), the exotic Indian civet Viverricula indica and the domestic dog Canis familiaris. We identified 38 individual F. fossana and 10 individual C. ferox. We estimated density using both capture-recapture analyses, with a buffer of full mean-maximum-distance-moved, and a spatially-explicit maximum-likelihood method (F. fossana: 3.03 and 2.23 km~(-2), respectively; C. ferox: 0.15 and 0.17 km~(-2), respectively). Our estimated densities of C. ferox in rainforest are lower than published estimates for conspecifics in the western dry forests. Within Ranomafana National Park species richness of native carnivores did not vary among trail systems located in secondary, selectively-logged and undisturbed forest. These results provide the first assessment of carnivore population parameters using camera-traps in the eastern rainforests of Madagascar.
机译：尽管为了解和保护马达加斯加独特的生物多样性付出了巨大的努力，但对该岛的食肉动物种群知之甚少。因此，我们于2007年6月至8月在马达加斯加的Ranomafana国家公园内部署了43个照相诱捕站，以评估该方法研究马达加斯加食肉动物的功效，并估算东部雨林中食肉动物的相对丰度和密度。总共755个摄象机之夜，提供了1,605张四种特有的食肉动物物种的照片（大隐孢子虫，马达加斯加的麝猫Fossa fossana，环尾猫鼬Galidia elegans和宽条纹的猫鼬Galidictus fasciata），异国情调的印度麝猫和小Viverriculadica狗犬熟悉。我们确定了38个单独的F. fossana和10个单独的C. ferox。我们使用捕获-再捕获分析，具有完全平均最大距离移动的缓冲区和空间显式最大似然方法（F. fossana：分别为3.03和2.23 km〜（-2）； C）来估计密度。 Ferox：分别为0.15和0.17 km〜（-2）。我们估计的热带雨林中的C. ferox密度低于已发表的西部干旱森林中同种异体的估计值。在Ranomafana国家公园内，原生食肉动物的物种丰富度在位于次生，有选择性伐木和未受干扰的森林中的步道系统之间没有变化。这些结果首次对使用马达加斯加东部雨林的照相机诱捕食肉动物种群参数进行了评估。

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