Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/ele.13867 |
Slower environmental cycles maintain greater life-history variation within populations | |
John S. Park; J. Timothy Wootton | |
2021-09-02 | |
发表期刊 | Ecology Letters
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出版年 | 2021 |
英文摘要 | Populations in nature are comprised of individual life histories, whose variation underpins ecological and evolutionary processes. Yet the forces of environmental selection that shape intrapopulation life-history variation are still not well-understood, and efforts have largely focused on random (stochastic) fluctuations of the environment. However, a ubiquitous mode of environmental fluctuation in nature is cyclical, whose periodicities can change independently of stochasticity. Here, we test theoretically based hypotheses for whether shortened (‘Fast’) or lengthened (‘Slow’) environmental cycles should generate higher intrapopulation variation of life history phenotypes. We show, through a combination of agent-based modelling and a multi-generational laboratory selection experiment using the tidepool copepod Tigriopus californicus, that slower environmental cycles maintain higher levels of intrapopulation variation. Surprisingly, the effect of environmental periodicity on variation was much stronger than that of stochasticity. Thus, our results show that periodicity is an important facet of fluctuating environments for life-history variation. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/337579 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | John S. Park,J. Timothy Wootton. Slower environmental cycles maintain greater life-history variation within populations[J]. Ecology Letters,2021. |
APA | John S. Park,&J. Timothy Wootton.(2021).Slower environmental cycles maintain greater life-history variation within populations.Ecology Letters. |
MLA | John S. Park,et al."Slower environmental cycles maintain greater life-history variation within populations".Ecology Letters (2021). |
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