Geometric analysis of regime shifts in coral reef communities
Geometric analysis of regime shifts in coral reef communities
复制标题
珊瑚礁群落政权转变的几何分析
DOI：
10.1002/ecs2.3319
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发表时间：
2021
期刊：
影响因子：
2.7
通讯作者：
Pinsky, Malin L.
中科院分区：
文献类型：
--
作者：
Tekwa, Edward W.;McManus, Lisa C.;Greiner, Ariel;Colton, Madhavi A.;Webster, Michael M.;Pinsky, Malin L.
珊瑚礁是许多被认为在替代稳定状态，单一物种优势和共存之间表现出政权转变的社区之一。提出的制度转变的驱动因素包括放牧，空间集群和海洋温度的变化。在这里，我们将珊瑚-大型藻类相互作用的动态机制提取到基于稳定性的三维几何结构中，类似于状态转换的热力学相图，以便于分析。特定的状态转换力可以被理解为通过立方状态几何的轨迹。这种几何视角使我们能够同时从相互作用物种的稳定性和持久性的角度来理解多种力。例如，在珊瑚-大型藻类群落中，当没有空间聚集时，大型藻类的放牧会导致替代稳定状态（例如，高栖息地连通性），而变暖减少共存。然而，与空间集群，放牧促进共存，因为升高的本地种内竞争。政权转移的几何形状提供了一个通用的框架来分析两个物种的社区，可以帮助保护工作导航复杂性和突然的环境变化。
Coral reefs are among the many communities believed to exhibit regime shifts between alternative stable states, single‐species dominance, and coexistence. Proposed drivers of regime shifts include changes in grazing, spatial clustering, and ocean temperature. Here, we distill the dynamic regimes of coral–macroalgal interaction into a three‐dimensional geometry based on stability, akin to thermodynamic phase diagrams of state transitions, to facilitate analysis. Specific regime‐shifting forces can be understood as trajectories through the cubic regime geometry. This geometric perspective allows us to understand multiple forces simultaneously in terms of the stability and persistence of interacting species. For example, in a coral–macroalgal community, grazing on macroalgae leads to alternative stable states when there is no spatial clustering (e.g., high habitat connectivity), while warming decreases coexistence. However, with spatial clustering, grazing promotes coexistence because of elevated local intraspecific competition. The geometry of regime shifts provides a general framework to analyze two‐species communities and can help conservation efforts navigate complexity and abrupt environmental changes.