Resource availability and heterogeneity shape the self-organisation of regular spatial patterning,Ecology Letters

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Resource availability and heterogeneity shape the self-organisation of regular spatial patterning
Ecology Letters ( IF 7.6 ) Pub Date : 2021-07-01 , DOI: 10.1111/ele.13822
Jessica A Castillo Vardaro _{1,

2} , Juan A Bonachela ₃ , Christopher C M Baker _{1,

4} , Malin L Pinsky ₃ , Daniel F Doak ₅ , Robert M Pringle ₁ , Corina E Tarnita ₁

Affiliation

Explaining large-scale ordered patterns and their effects on ecosystem functioning is a fundamental and controversial challenge in ecology. Here, we coupled empirical and theoretical approaches to explore how competition and spatial heterogeneity govern the regularity of colony dispersion in fungus-farming termites. Individuals from different colonies fought fiercely, and inter-nest distances were greater when nests were large and resources scarce—as expected if competition is strong, large colonies require more resources and foraging area scales with resource availability. Building these principles into a model of inter-colony competition showed that highly ordered patterns emerged under high resource availability and low resource heterogeneity. Analysis of this dynamical model provided novel insights into the mechanisms that modulate pattern regularity and the emergent effects of these patterns on system-wide productivity. Our results show how environmental context shapes pattern formation by social-insect ecosystem engineers, which offers one explanation for the marked variability observed across ecosystems.

中文翻译：

资源可用性和异质性塑造了规则空间格局的自组织

解释大规模有序模式及其对生态系统功能的影响是生态学中一个基本且有争议的挑战。在这里，我们结合经验和理论方法来探索竞争和空间异质性如何控制真菌养殖白蚁菌落分散的规律。来自不同殖民地的个体之间的战斗非常激烈，当巢穴大而资源稀缺时，巢穴之间的距离更大——正如预期的那样，如果竞争激烈，大殖民地需要更多的资源，觅食区域规模与资源可用性有关。将这些原则构建到菌落间竞争模型中表明，在高资源可用性和低资源异质性下出现了高度有序的模式。对该动态模型的分析提供了对调节模式规律性的机制以及这些模式对系统范围生产力的紧急影响的新见解。我们的结果显示了环境背景如何塑造社会昆虫生态系统工程师的模式形成，这为在整个生态系统中观察到的显着变异提供了一种解释。

更新日期：2021-08-10

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