...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Conservation Biology >Use of Empirically Derived Source-Destination Models to Map Regional Conservation Corridors
【24h】

Use of Empirically Derived Source-Destination Models to Map Regional Conservation Corridors

机译：利用经验推导的源－目的地模型来绘制区域保护走廊

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

The ability of populations to be connected across large landscapes via dispersal is critical to long-term viability for many species. One means to mitigate population isolation is the protection of movement corridors among habitat patches. Nevertheless, the utility of small, narrow, linear features as habitat corridors has been hotly debated. Here, we argue that analysis of movement across continuously resistant landscapes allows a shift to a broader consideration of how landscape patterns influence connectivity at scales relevant to conservation. We further argue that this change in scale and definition of the connectivity problem improves one's ability to find solutions and may help resolve long-standing disputes regarding scale and definition of movement corridors and their importance to population connectivity. We used a new method that combines empirically derived landscape-resistance maps and least-cost path analysis between multiple source and destination locations to assess habitat isolation and identify corridors and barriers to organism movement. Specifically, we used a genetically based landscape resistance model for American black bears ( Ursus americanus) to identify major movement corridors and barriers to population connectivity between Yellowstone National Park and the Canadian border. Even though western Montana and northern Idaho contain abundant public lands and the largest wilderness areas in the contiguous United States, moving from the Canadian border to Yellowstone Park along those paths indicated by modeled gene flow required bears to cross at least 6 potential barriers. Our methods are generic and can be applied to virtually any species for which reliable maps of landscape resistance can be developed.
机译：种群通过扩散跨大景观连通的能力对于许多物种的长期生存能力至关重要。减轻人口隔离的一种方法是保护栖息地之间的活动走廊。然而，人们一直在争论小的，狭窄的，线性特征作为栖息地走廊的用途。在这里，我们认为，通过对连续抗性景观的运动进行分析，可以转向更广泛考虑景观模式如何在与保护相关的尺度上影响连通性。我们进一步认为，连通性问题的规模和定义的这种变化提高了人们寻找解决方案的能力，并可能有助于解决有关移动走廊的规模和定义及其对人口连通性重要性的长期争议。我们使用了一种新方法，该方法结合了根据经验得出的景观阻力图和多个源和目标位置之间的成本最低的路径分析，以评估栖息地隔离并确定生物活动的走廊和障碍。具体来说，我们对美国黑熊（Ursus americanus）使用了基于基因的景观抗性模型，以识别黄石国家公园和加拿大边境之间主要的活动走廊和人口连通性的障碍。即使蒙大纳州西部和爱达荷州北部拥有丰富的公共土地，并且是美国毗连的最大的荒野地区，但从加拿大边界到黄石公园，沿着模型基因流指示的路径，仍需要熊穿越至少6个潜在的障碍。我们的方法是通用的，几乎可以应用于可以开发出可靠的景观抗性图的任何物种。

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