...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>SIAM Journal on Applied Mathematics >Seasonal influences on population spread and persistence in streams: Critical domain size
【24h】

Seasonal influences on population spread and persistence in streams: Critical domain size

机译：对人口扩散和河流持续性的季节性影响：临界域大小

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 critical domain size problem determines the size of the region of habitat needed to ensure population persistence. In this paper we address the critical domain size problem for seasonally fluctuating stream environments and determine how large a reach of suitable stream habitat is needed to ensure population persistence of a stream-dwelling species. Two key factors, not typically found in critical domain size problems, are fundamental in determining whether population can persist. These are the unidirectional nature of stream flow and seasonal fluctuations in the stream environment. We characterize the fluctuating environments in terms of seasonal correlations among the flow, transfer rates, diffusion, and settling rates, and we investigate the effect of such correlations on the critical domain size problem. We show how results for the seasonally fluctuating stream can formally be connected to those for autonomous integro-differential equations, through the appropriate weighted averaging methods.
机译：关键的域大小问题决定了确保种群持久性所需的栖息地区域的大小。在本文中，我们解决了季节性波动的河流环境中的关键域大小问题，并确定需要多大的合适河流栖息地才能确保河流居住物种的种群持久性。在确定人口是否可以持续存在的基础上，两个关键因素通常不存在于关键域大小问题中。这些是河流的单向性和河流环境中的季节性波动。我们根据流量，传输速率，扩散和沉降速率之间的季节相关性来描述波动的环境，并研究此类相关性对关键域大小问题的影响。我们展示了如何通过适当的加权平均方法将季节性波动流的结果正式地与自主积分微分方程的结果联系起来。

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