...
首页> 外文期刊>Trends in Ecology & Evolution >When less is more: positive population-level effects of mortality
【24h】

When less is more: positive population-level effects of mortality

机译:少则多:死亡率对人口的积极影响

获取原文
获取原文并翻译 | 示例
   

获取外文期刊封面封底 >>

       

摘要

Experimental and theoretical studies show that mortality imposed on a population can counter-intuitively increase the density of a specific life-history stage or total population density. Understanding positive population-level effects of mortality is advancing, illuminating implications for population, community, and applied ecology. Reconciling theory and data, we found that the mathematical models used to study mortality effects vary in the effects predicted and mechanisms proposed. Experiments predominantly demonstrate stage-specific density increases in response to mortality. We argue that the empirical evidence supports theory based on stage-structured population models but not on unstructured models. We conclude that stage-specific positive mortality effects are likely to be common in nature and that accounting for within-population individual variation is essential for developing ecological theory.
机译:实验和理论研究表明,对人口施加的死亡率可以反直观地增加特定生命史阶段的密度或总人口密度。对死亡率的积极的人口层面影响的理解正在进步,阐明了对人口,社区和应用生态学的影响。协调理论和数据,我们发现用于研究死亡率影响的数学模型在预测的影响和提出的机制方面有所不同。实验主要表明,随着死亡率的增加,特定阶段的密度增加。我们认为经验证据支持基于阶段结构的人口模型的理论,而不是基于非结构模型的理论。我们得出的结论是,特定阶段的积极死亡率效应可能在自然界中很常见,并且考虑到种群内个体差异对于发展生态学理论至关重要。

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