...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Conservation Biology >Combining Measures of Dispersal to Identify Conservation Strategies in Fragmented Landscapes
【24h】

Combining Measures of Dispersal to Identify Conservation Strategies in Fragmented Landscapes

机译：结合分散措施确定零散景观的保护策略

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

Abstract: Understanding the way in which habitat fragmentation disrupts animal dispersal is key to identifying effective and efficient conservation strategies. To differentiate the potential effectiveness of 2 frequently used strategies for increasing the connectivity of populations in fragmented landscapes—corridors and stepping stones—we combined 3 complimentary methods: behavioral studies at habitat edges, mark-recapture, and genetic analyses. Each of these methods addresses different steps in the dispersal process that a single intensive study could not address. We applied the 3 methods to the case study of Atrytonopsis new species 1, a rare butterfly endemic to a partially urbanized stretch of barrier islands in North Carolina (U.S.A.). Results of behavioral analyses showed the butterfly flew into urban and forested areas, but not over open beach; mark-recapture showed that the butterfly dispersed successfully through short stretches of urban areas (5 km) were a dispersal barrier, but shorter stretches of urban areas (≤5 km) were not. Although results from all 3 methods indicated natural features in the landscape, not urbanization, were barriers to dispersal, when we combined the results we could determine where barriers might arise: forests restricted dispersal for the butterfly only when there were long stretches with no habitat. Therefore, urban areas have the potential to become a dispersal barrier if their extent increases, a finding that may have gone unnoticed if we had used a single approach. Protection of stepping stones should be sufficient to maintain connectivity for Atrytonopsis new species 1 at current levels of urbanization. Our research highlights how the use of complementary approaches for studying animal dispersal in fragmented landscapes can help identify conservation strategies.
机译：摘要：了解生境破碎化破坏动物传播的方式是确定有效和有效的保护策略的关键。为了区分两种经常使用的策略来提高零散景观中的人口连通性的潜在效果（走廊和垫脚石），我们结合了三种互补的方法：在栖息地边缘的行为研究，标记捕获和遗传分析。这些方法中的每一个都解决了分散过程中不同的步骤，而单个深入研究无法解决这些步骤。我们将这3种方法应用到Atrytonopsis新物种1的案例研究中，该物种是北卡罗来纳州（美国）部分城市化的隔离岛延伸的罕见蝴蝶特有种。行为分析结果表明，蝴蝶飞到城市和森林地区，但没有飞过空旷的海滩。 mark-recapture显示，通过短距离市区（5公里）成功分散的蝴蝶是一个扩散障碍，而较短市区（≤5公里）的蝴蝶不是扩散障碍。尽管所有3种方法的结果都表明景观的自然特征而非城市化是扩散的障碍，但是当我们结合这些结果时，我们可以确定可能出现障碍的地方：森林仅在漫长的延伸而无生境时才限制蝴蝶的扩散。因此，如果城市地区的范围扩大，则有可能成为分散的障碍，如果使用单一方法，这一发现可能不会引起注意。对垫脚石的保护应足以在当前的城市化水平下保持对Atrytonopsis新物种1的连通性。我们的研究突出了如何使用互补性方法研究在分散的景观中的动物传播可以帮助确定保护策略。

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