A process-based framework for metacommunity ecology
A process-based framework for metacommunity ecology
复制标题
基于流程的元社区生态框架
DOI：
--
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Jonathan M. Chase
中科院分区：
文献类型：
--
作者：
Patrick L. Thompson;L. Guzman;L. De Meester;Z. Horváth;R. Ptáčník;B. Vanschoenwinkel;Duarte S. Viana;Jonathan M. Chase
元社区概念极大地增进了我们对空间动态如何塑造生态社区的理解。迄今为止，该框架强调了构建元社区的机制之间的离散差异（例如利基与中立），尽管认识到组装过程是连续的。在这里，我们提出了对该框架的基本重新构想，该框架明确地将局部共存理论与元社区理论联系起来，并允许连续范围的竞争性元社区动态。这些动态产生于塑造生态群落动态的基本过程：1）对非生物条件的密度无关的反应，2）密度依赖的生物相互作用，3）扩散。我们还将随机性纳入每个过程的人口统计实现中。传统的元社区原型作为该空间内的离散区域存在，但我们的框架强调了经典元社区理论中遗漏的一系列动态。我们使用模拟模型来形式化该框架，该模型通过改变底层流程的强度来探索全方位的竞争性元社区动态。我们说明了不同的过程如何交互地塑造元社区的多样性、功能和稳定性。这种基于过程的框架扩展了元社区生态学的丰富历史，可用于生成关于构建自然界元社区的过程的可检验的假设。
The metacommunity concept has greatly advanced our understanding of how spatial dynamics shape ecological communities. To date, this framework has emphasized discrete differences between mechanisms structuring metacommunities (e.g. niche vs. neutral), despite the recognition that assembly processes are continuous. Here we present a fundamental reconception of the framework that explicitly links local coexistence theory to metacommunity theory and allows for a continuous range of competitive metacommunity dynamics. These dynamics emerge from the underlying processes that shape the dynamics of ecological communities: 1) density-independent responses to abiotic conditions, 2) density-dependent biotic interactions, and 3) dispersal. We also incorporate stochasticity in the demographic realization of each of these processes. The traditional metacommunity archetypes exist as discrete regions within this space, but our framework highlights a range of dynamics that are missed in classic metacommunity theory. We formalize this framework using a simulation model that explores the full range of competitive metacommunity dynamics by varying the strength of the underlying processes. We illustrate how the different processes interactively shape the diversity, functioning, and stability of metacommunities. This process-based framework extends the rich history of metacommunity ecology and can be used to generate testable hypotheses on the processes structuring metacommunities in nature.
DOI：
10.1073/pnas.1803122116
发表时间：
2019-03-26
影响因子：
11.1
作者：
Grainger, Tess Nahanni;Letten, Andrew D.;Fukami, Tadashi
通讯作者：
Fukami, Tadashi
区域中立性通过当地适应性生态位演化而演变
DOI：
10.1073/pnas.1808615116
发表时间：
2019
期刊：
Proceedings of the National Academy of Sciences
影响因子：
--
作者：
Leibold, Mathew A.;Urban, Mark C.;De Meester, Luc;Klausmeier, Christopher A.;Vanoverbeke, Joost
通讯作者：
Vanoverbeke, Joost