南非一个小保护区的非洲野狗运动生态学

Michelle Pretorius, G. Distiller, T. Photopoulou, Christopher Kelly, M. O'Riain
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摘要

非洲野狗(Lycaon pictus)数量的急剧下降导致了南非野生狗保护的有管理的集合种群方法。监测重新引入保护区的种群的生存和栖息地使用情况是适应性管理和改善健康的重要组成部分,最终改善集合种群的生存。我们的研究描述了一群被重新引入南非夸祖鲁-纳塔尔北部Manyoni私人狩猎保护区(219平方公里)的野狗的领地和栖息地选择。尽管被引入了一个小的PA,但该背包只利用了一半的可用空间(121平方公里),并避开了保护区的中心区域。对非洲狮(Panthera leo)栖息地的事后分析表明,竞争性回避是影响该种群栖息地使用的一个重要因素;然而,还需要进一步的研究。栖息地的选择也随季节和登顶而变化。最终,我们表明,时空分析可以帮助识别野狗领地内的高风险区域,例如围栏沿线的活动热点。然后,这些分析可以用于增加对这些区域的有针对性的管理,例如改善使用良好的栅栏的维护,这是小型PA集合种群持续成功的重要考虑因素。
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African Wild Dog Movement Ecology in a Small Protected Area in South Africa
Dramatic population declines of African wild dogs (Lycaon pictus) led to a managed metapopulation approach for wild dog conservation in South Africa. Monitoring the survival and habitat use of packs reintroduced into protected areas (PAs) is an essential part of adaptive management and improving the health and, ultimately, the survival of the metapopulation. Our study describes the territoriality and habitat selection of a pack of wild dogs reintroduced into Manyoni Private Game Reserve (219 km2) in northern KwaZulu-Natal, South Africa. Despite being introduced into a small PA, the pack only utilized half their available space (121 km2) and avoided the central areas of the reserve. Post hoc analysis of African lion (Panthera leo) localities suggested competitive avoidance was a strong factor in shaping the habitat usage of the pack; however, further research is required. Habitat selection also varied seasonally and with denning. Ultimately, we showed that spatio-temporal analyses can help identify high-risk areas within wild dog territories, such as hotspots of activity along fencelines. These analyses can then be used to increase targeted management of these areas, such as improving the maintenance of well-used fencelines, which is an important consideration for the sustained success of the metapopulation across small PAs.
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