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首页> 外文期刊>Wildlife Biology >Fine-scale spatio-temporal variation in tiger Panthera tigris diet: effect of study duration and extent on estimates of tiger diet in Chitwan National Park, Nepal
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Fine-scale spatio-temporal variation in tiger Panthera tigris diet: effect of study duration and extent on estimates of tiger diet in Chitwan National Park, Nepal

机译：虎豹的饮食的精细时空变化：研究持续时间和程度对尼泊尔奇旺国家公园虎食估计的影响

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摘要

Attempts to conserve declining tiger Panthera tigris populations and distributions have experienced limited success. The poaching of tiger prey is a key threat to tiger persistence; a clear understanding of tiger diet is a prerequisite to conserve dwindling populations. We used unpublished data on tiger diet in combination with two previously published studies to examine fine-scale spatio-temporal changes in tiger diet relative to prey abundance in Chitwan National Park, Nepal, and aggregated data from the three studies to examine the effect that study duration and the size of the study area have on estimates of tiger diet. Our results correspond with those of previous studies: in all three studies, tiger diet was dominated by members of Cervidae; small to medium-sized prey was important in one study. Tiger diet was unrelated to prey abundance, and the aggregation of studies indicates that increasing study duration and study area size both result in increased dietary diversity in terms of prey categories consumed, and increasing study duration changed which prey species contributed most to tiger diet. Based on our results, we suggest that managers focus their efforts on minimizing the poaching of all tiger prey, and that future studies of tiger diet be of long duration and large spatial extent to improve our understanding of spatio-temporal variation in estimates of tiger diet.
机译：保护下降的虎豹种群和分布的尝试取得了有限的成功。偷猎老虎是对老虎持久性的主要威胁。对老虎饮食的清晰了解是保护日益减少的种群的前提。我们将尚未发表的有关老虎饮食的数据与两项先前发表的研究结合使用，以检验尼泊尔奇旺国家公园的老虎饮食相对于猎物丰富度的小规模时空变化，并结合这三项研究的汇总数据来检验该研究的效果研究区域的持续时间和规模取决于对老虎饮食的估计。我们的结果与以前的研究结果相符：在所有三项研究中，老虎饮食以鹿角科为主导;在一项研究中，中小型猎物很重要。老虎的饮食与猎物的丰度无关，研究的累积表明，研究持续时间的增加和研究面积的增加，都导致饮食种类的多样性，而所消耗的猎物种类也有所增加，而研究持续时间的增加改变了哪种猎物对老虎的饮食贡献最大。根据我们的结果，我们建议管理人员将精力集中在最大程度地减少对所有老虎猎物的偷猎上，并且未来对老虎饮食的研究应具有较长的时间和较大的空间范围，以增进我们对老虎饮食估计的时空变化的理解。

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