Synthesizing the effects of individual‐level variation on coexistence

Synthesizing the effects of individual‐level variation on coexistence
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综合个体水平差异对共存的影响

DOI:
10.1002/ecm.1493
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发表时间:
2021
影响因子:
6.1
通讯作者:
Vasseur, David A.
Vasseur, David A.
中科院分区:
环境科学与生态学1区
文献类型:
--
作者:
Stump, Simon Maccracken;Song, Chuliang;Saavedra, Serguei;Levine, Jonathan M.;Vasseur, David A.

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种内性状变异(ITV)是生命的一个普遍特征,但ITV如何影响种间共存是一个悬而未决的问题。最近的理论研究产生了相互矛盾的结果,ITV在一些模型中促进共存,而在另一些模型中破坏共存。在这里,我们回顾了最近的工作,并提出了一个新的概念框架来解释ITV如何影响两个物种之间的共存。我们提出所有的性状都属于两类之一:生态位性状和等级性状。生态位特征决定了个体在生态位轴或权衡轴上的位置,因此改变个体的特征会使其在某些情况下表现得更好,而在其他情况下表现得更差。等级特征代表了具有不同特征的同种具有相同的生态位,但在所有情况下都表现得更好的情况,因此有赢家和输家。我们的框架,使预测种内变异在每种类型的性状如何影响共存,通过改变稳定机制和健身差异。例如,生态位特征中的ITV通常会削弱稳定机制,除非它产生通才-专家权衡。另一方面,等级特征往往会对竞争对手产生不同的影响,例如一个物种的ITV会加强稳定机制,而另一个物种的ITV会削弱该机制。我们重新审视了10项关于ITV和共存的研究,沿着了四个新的模型,并表明我们的框架可以解释为什么ITV在某些模型中促进共存,而在其他模型中破坏共存。总的来说,我们的框架调和了以前被认为是对比的结果,并提供了理论和经验的方向来研究ITV对物种共存的影响。
Intraspecific trait variation (ITV) is a widespread feature of life, but it is an open question how ITV affects between‐species coexistence. Recent theoretical studies have produced contradictory results, with ITV promoting coexistence in some models and undermining coexistence in others. Here we review recent work and propose a new conceptual framework to explain how ITV affects coexistence between two species. We propose that all traits belong to one of two categories: niche traits and hierarchical traits. Niche traits determine an individual's location on a niche axis or trade‐off axis, such that changing an individual's trait makes it perform better in some circumstances and worse in others. Hierarchical traits represent cases where conspecifics with different traits have the same niche, but one performs better under all circumstances, such that there are winners and losers. Our framework makes predictions for how intraspecific variation in each type of trait affects coexistence by altering stabilizing mechanisms and fitness differences. For example, ITV in niche traits generally weakens the stabilizing mechanism, except when it generates a generalist–specialist trade‐off. On the other hand, hierarchical traits tend to impact competitors differently, such that ITV in one species will strengthen the stabilizing mechanism while ITV in the other species will weaken the mechanism. We re‐examine 10 studies on ITV and coexistence, along with four novel models, and show that our framework can explain why ITV promotes coexistence in some models and undermines coexistence in others. Overall, our framework reconciles what were previously considered to be contrasting results and provides both theoretical and empirical directions to study the effect of ITV on species coexistence.
物种间种子传播的差异和同种邻居效应可以相互作用,影响共存
DOI: 10.1007/s12080-020-00468-5
发表时间: 2020
影响因子: 1.6
作者:
Stump, Simon Maccracken;Comita, Liza S.
通讯作者: Comita, Liza S.
DOI: --
发表时间: 2019
影响因子: 2.6
作者:
M. Gabriela M. Gomes;Jessica G. King;A. Nunes;N. Colegrave;A. Hoffmann
通讯作者: A. Hoffmann
DOI: 10.1007/s12080-016-0314-z
发表时间: 2017-03-01
影响因子: 1.6
作者:
Miller, Elizabeth T.;Klausmeier, Christopher A.
通讯作者: Klausmeier, Christopher A.
DOI: 10.1111/oik.05567
发表时间: 2019-03-01
期刊: OIKOS
影响因子: 3.4
作者:
Crawford, Michael;Jeltsch, Florian;Schlaegel, Ulrike E.
通讯作者: Schlaegel, Ulrike E.
DOI: --
发表时间: 2017
影响因子: 2.9
作者:
S. Stump
通讯作者: S. Stump