How environmental drivers of spatial synchrony interact

Reuman, DC, Castorani, MCN, Kavanaugh, KC, Sheppard, LW, Walter, JA and Bell, TW 2023 How environmental drivers of spatial synchrony interact. Ecography.

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Spatial synchrony, the tendency for populations across space to show correlated fluctuations, is a fundamental feature of population dynamics, linked to central topics of ecology such as population cycling, extinction risk, and ecosystem stability. A common mechanism of spatial synchrony is the Moran effect, whereby spatially synchronized environmental signals drive population dynamics and hence induce population synchrony. After reviewing recent progress in understanding Moran effects, we here elaborate a general theory of how Moran effects of different environmental drivers acting on the same populations can interact, either synergistically or destructively, to produce either substantially more or markedly less population synchrony than would otherwise occur. We provide intuition for how this newly recognized mechanism works through theoretical case studies and application of our theory to California populations of giant kelp. We argue that Moran interactions should be common. Our theory and analysis explain an important new aspect of a fundamental feature of spatiotemporal population dynamics.

Item Type: Publication - Article
Additional Keywords: Fourier, interactions, kelp, Macrocystis pyrifera, Moran effects, synchrony
Subjects: Marine Sciences
Divisions: Marine Biological Association of the UK > Other (MBA)
Depositing User: Ms Kristina Hixon
Date made live: 29 Sep 2023 10:23
Last Modified: 09 Feb 2024 16:56

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