...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Conservation Biology >Impacts of landscape change on wolf restoration success: Planning a reintroduction program based on static and dynamic spatial models
【24h】

Impacts of landscape change on wolf restoration success: Planning a reintroduction program based on static and dynamic spatial models

机译：景观变化对狼修复成功的影响：基于静态和动态空间模型规划重新引入程序

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Mammalian carnivores are increasingly the focus of reintroduction attempts in areas from which they have been extirpated by historic persecution. We used static and dynamic spatial models to evaluate whether a proposed wolf reintroduction to the southern Rocky Mountain region (U.S.A) would advance recovery by increasing species distribution beyond what might be expected through natural range expansion. We used multiple logistic regression to develop a resource-selection function relating wolf distribution in the Greater Yellowstone region with regional-scale habitat variables. We also used a spatially explicit population model to predict wolf distribution and viability at several potential reintroduction sites within the region under current conditions and under two contrasting predictions of future landscape change. Areas of the southern Rocky Mountains with resource-selection-function values similar to those of currently inhabited areas in Yellowstone could potentially support >1000 wolves, 40% within protected areas and 47% on unprotected public lands. The dynamic model predicted similar distribution under current conditions but suggested that development trends over 25 years may result in the loss of one of four potential regional subpopulations and increased isolation of the remaining areas. The reduction in carrying capacity due to landscape change ranged from 49% to 66%, depending on assumptions about road development on public lands. Although much of the wolf population occurs outside core protected areas, these areas remain the key to the persistence of subpopulations. Although the dynamic model's sensitivity to dispersal parameters made it difficult to predict the probability of natural recolonization from distant sources, it suggested that an active reintroduction to two sites within the region may be necessary to ensure low extinction probability. Social carnivores such as the wolf, which often require larger territories than solitary species of similar size, may be more vulnerable to environmental stochasticity and landscape fragmentation than their vagility and fecundity would suggest. [References: 48]
机译：哺乳动物食肉动物越来越多地被重新引入尝试的领域，而这些地区已因历史性的迫害而被淘汰。我们使用静态和动态空间模型来评估将拟议的狼重新引入落基山脉南部地区（美国）是否会通过增加物种分布超过自然范围扩展所预期的范围来促进恢复。我们使用多元逻辑回归来开发资源选择函数，将大黄石地区的狼分布与区域规模的栖息地变量联系起来。我们还使用空间上明确的种群模型来预测在当前条件下以及未来景观变化的两个对比预测下该区域内几个潜在的重新引入地点的狼的分布和生存力。资源选择功能值与黄石公园当前居住区相似的落基山脉南部地区可能支持1000头以上的狼，其中40％位于保护区内，47％位于未受保护的公共土地上。动态模型预测了在当前条件下的相似分布，但表明25年的发展趋势可能会导致四个潜在的区域亚群之一丧失，并增加其余地区的隔离度。景观变化导致的承载力下降幅度在49％至66％之间，具体取决于对公共土地上道路发展的假设。尽管大部分狼群居住在核心保护区之外，但这些地区仍然是持久维持亚种群的关键。尽管动力学模型对分散参数的敏感性使得难以预测来自遥远源头自然重新定殖的可能性，但它建议为确保低灭绝概率，有必要主动引入该区域内的两个位置。诸如狼之类的社会食肉动物通常比比类似大小的单独物种需要更大的领土，比它们的易变性和繁殖力可能更容易受到环境随机性和景观破碎化的影响。 [参考：48]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号