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Multi-species occupancy modelling of a carnivore guild in wildlife management areas in the Kalahari

机译:Kalahari野生动物管理区野生动物管理区的多种占用建模

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Populations of large carnivores are declining at a rapid rate, primarily resulting from land use change due to increasing human pressure. Such changes can restrict available habitat for many species, particularly wide-ranging large carnivores. In Botswana, aside from protected areas, large tracts of land are set aside as wildlife management areas (WMAs). Wildlife management areas are important regions of habitat for many species and can serve as buffer zones between protected areas and agro-pastoral land, while allowing communities to utilise resources. It was hypothesised that land use type surrounding WMAs, human settlements and prey availability might affect carnivore distribution patterns. We conducted a camera-trap study with 96 stations in two WMAs in the Ghanzi district and used a Royles-Nichol multi-species occupancy model to test which factors influenced habitat use for nine carnivore species. Detection probability was low across all species, whereas occupancy varied substantially. Lion occurrence was highest close to protected areas, whereas leopards and brown hyaena occurred closer to commercial farms. Black-backed jackal and caracal had high occurrence probabilities near both protected and commercial farming areas. Settlement locations and wild prey availability did not strongly influence occurrence of any species, although black-backed jackals had higher occurrence in areas with high livestock frequency. As pressure for land continues to increase, available habitat for wildlife is reduced and wide-ranging species like carnivores are vulnerable to edge effects. The WMAs provide vital habitat for carnivores and can be used to improve livelihoods for communities, whilst maintaining biodiversity in the Kalahari.
机译:大肉食病的人口以快速的速度下降,主要是由于人类压力增加而导致的土地利用变化。这种变化可以限制许多物种的可用栖息地,特别是大的大肉生物。在博茨瓦纳,除了保护区,大片土地被搁置为野生动物管理领域(WMAS)。野生动物管理领域是许多物种的重要地区,可以作为保护区和农业田园之间的缓冲区,同时允许社区利用资源。它是假设的,围绕WMAS,人类住区和猎物可用性的土地利用类型可能会影响食肉动物分布模式。我们在加州区的两个WMA中进行了一项摄像机陷阱研究,并使用了罗伊尔 - 尼科尔多种占用模式,以测试影响九个肉食病毒物种的栖息地使用的因素。所有物种的检测概率很低,而占用率大本值变化。狮子发生是最近的受保护区,而豹子和棕色宣兵发生较近商业农场。黑色支持的豺狼和Caracal在受保护和商业养殖区附近的概率很高。尽管黑背豺频率高,但沉降地点和野生猎物的出现并没有强烈影响任何物种的发生。由于土地的压力继续增加,可获得野生动物的现有栖息地减少,众多肉食病毒等物种易受边缘效应的影响。 WMA提供了食肉动物的重要栖息地,可用于改善社区的生计,同时在卡拉哈里维持生物多样性。

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