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Evolutionary adaptation of high‐diversity communities to changing environments
Ecology and Evolution ( IF 2.6 ) Pub Date : 2020-10-13 , DOI: 10.1002/ece3.6695
Evgeniia Alekseeva 1 , Michael Doebeli 2 , Iaroslav Ispolatov 3
Affiliation  

We use adaptive dynamics models to study how changes in the abiotic environment affect patterns of evolutionary dynamics and diversity in evolving communities of organisms with complex phenotypes. The models are based on the logistic competition model, and environmental changes are implemented as a temporal change of the carrying capacity as a function of phenotype. In general, we observe that environmental changes cause a reduction in the number of species, in total population size, and in phenotypic diversity. The rate of environmental change is crucial for determining whether a community survives or undergoes extinction. Until some critical rate of environmental changes, species are able to follow evolutionarily the shifting phenotypic optimum of the carrying capacity, and many communities adapt to the changing conditions and converge to new stationary states. When environmental changes stop, such communities gradually restore their initial phenotypic diversity.

中文翻译:

高多样性社区对不断变化的环境的进化适应

我们使用自适应动力学模型来研究非生物环境中的变化如何影响具有复杂表型的生物群落的进化动力学和多样性模式。这些模型基于逻辑竞争模型,环境变化被实现为承载能力随时间变化的表型。通常,我们观察到环境变化导致物种数量,总种群数量和表型多样性的减少。环境变化的速度对于确定一个社区是生存还是灭绝至关重要。直到某些临界的环境变化速率,物种才能够进化地遵循承载能力不断变化的表型最佳状态,许多社区都适应了不断变化的条件,并趋向于新的稳定状态。当环境变化停止时,这些社区将逐渐恢复其最初的表型多样性。
更新日期:2020-11-13
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