当前位置: X-MOL 学术J. Arid Environ. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
A leopard's favourite spots: Habitat preference and population density of leopards in a semi-arid biodiversity hotspot
Journal of Arid Environments ( IF 2.7 ) Pub Date : 2020-10-01 , DOI: 10.1016/j.jaridenv.2020.104218
Gareth K.H. Mann , M. Justin O'Riain , Daniel M. Parker

Abstract Leopards (Panthera pardus) are the only free-ranging large predators to still occur naturally throughout much of Africa, but are vulnerable to habitat loss, ecosystem degradation and persecution. We used a systematic camera trap survey covering an area of ∼3100 km2 in the Little Karoo, a semi-arid biodiversity hotspot in South Africa, to assess the impacts of land use and habitat type on leopard density. Camera data were supplemented by opportunistic scat collection to produce a habitat suitability model. We used a habitat suitability model to inform spatially explicit capture-recapture models used to estimate population density. We recorded 152 independent photographs of 27 individually recognizable leopards at 54 camera stations and collected scats from a further 76 locations. Our habitat suitability model showed that primary productivity and vegetation type were the best predictors of leopard habitat suitability. Our best performing population density model allowed for detection and movement of individuals to vary according to sex, and estimated population density at 1.26 (SE ± 0.25) leopards/100 km2. Our results suggest that the Little Karoo contains large areas of leopard habitat, but that leopards only persist at low densities within this area. Our study serves as an important baseline estimate for leopard populations in mixed land-use, semi-arid areas.

中文翻译:

豹子最喜欢的地方:半干旱生物多样性热点地区豹子的栖息地偏好和种群密度

摘要 豹 (Panthera pardus) 是唯一一种在非洲大部分地区仍然自然存在的自由放养大型食肉动物,但容易受到栖息地丧失、生态系统退化和迫害的影响。我们在南非半干旱的生物多样性热点地区 Little Karoo 使用了覆盖约 3100 平方公里区域的系统相机陷阱调查,以评估土地利用和栖息地类型对豹子密度的影响。相机数据由机会主义的粪便收集补充以产生栖息地适宜性模型。我们使用栖息地适宜性模型来告知用于估计人口密度的空间明确的捕获-再捕获模型。我们在 54 个摄像站记录了 27 只可单独识别的豹子的 152 张独立照片,并从另外 76 个地点收集了粪便。我们的栖息地适宜性模型表明,初级生产力和植被类型是豹子栖息地适宜性的最佳预测指标。我们表现​​最佳的种群密度模型允许个体的检测和移动因性别而异,估计种群密度为 1.26 (SE ± 0.25) 豹/100 平方公里。我们的研究结果表明,小卡鲁有大面积的豹栖息地,但豹只在该地区以低密度生存。我们的研究为混合土地利用、半干旱地区的豹种群提供了重要的基线估计。25) 豹/100 平方公里。我们的研究结果表明,小卡鲁有大面积的豹栖息地,但豹只在该地区以低密度生存。我们的研究为混合土地利用、半干旱地区的豹种群提供了重要的基线估计。25) 豹/100 平方公里。我们的研究结果表明,小卡鲁有大面积的豹栖息地,但豹只在该地区以低密度生存。我们的研究为混合土地利用、半干旱地区的豹种群提供了重要的基线估计。
更新日期:2020-10-01
down
wechat
bug