Diversity–stability relationships across organism groups and ecosystem types become decoupled across spatial scales
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Author/Creator ORCID
Date
2023-07-04
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Citation of Original Publication
Wisnoski, Nathan I., Andrade, Riley, Castorani, Max C. N., Catano, Christopher P., Compagnoni, Aldo, Lamy, Thomas, Lany, Nina K., et al. 2023. “Diversity–Stability Relationships across Organism Groups and Ecosystem Types Become Decoupled across Spatial Scales.” Ecology e4136. https://doi.org/10.1002/ecy.4136
Rights
This is the peer reviewed version of the following article: Wisnoski, Nathan I., Andrade, Riley, Castorani, Max C. N., Catano, Christopher P., Compagnoni, Aldo, Lamy, Thomas, Lany, Nina K., et al. 2023. “Diversity–Stability Relationships across Organism Groups and Ecosystem Types Become Decoupled across Spatial Scales.” Ecology e4136. https://doi.org/10.1002/ecy.4136, which has been published in final form at https://doi.org/10.1002/ecy.4136. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions. This article may not be enhanced, enriched or otherwise transformed into a derivative work, without express permission from Wiley or by statutory rights under applicable legislation. Copyright notices must not be removed, obscured or modified. The article must be linked to Wiley’s version of record on Wiley Online Library and any embedding, framing or otherwise making available the article or pages thereof by third parties from platforms, services and websites other than Wiley Online Library must be prohibited.
Subjects
Abstract
The relationship between biodiversity and stability, or its inverse, temporal variability, is multidimensional and complex. Temporal variability in aggregate properties, like total biomass or abundance, is typically lower in communities with higher species diversity (i.e., the diversity–stability relationship [DSR]). At broader spatial extents, regional-scale aggregate variability is also lower with higher regional diversity (in plant systems) and with lower spatial synchrony. However, focusing exclusively on aggregate properties of communities may overlook potentially destabilizing compositional shifts. It is not yet clear how diversity is related to different components of variability across spatial scales, nor whether regional DSRs emerge across a broad range of organisms and ecosystem types. To test these questions, we compiled a large collection of long-term metacommunity data spanning a wide range of taxonomic groups (e.g., birds, fish, plants, invertebrates) and ecosystem types (e.g., deserts, forests, oceans). We applied a newly developed quantitative framework for jointly analyzing aggregate and compositional variability across scales. We quantified DSRs for composition and aggregate variability in local communities and metacommunities. At the local scale, more diverse communities were less variable, but this effect was stronger for aggregate than compositional properties. We found no stabilizing effect of γ-diversity on metacommunity variability, but β-diversity played a strong role in reducing compositional spatial synchrony, which reduced regional variability. Spatial synchrony differed among taxa, suggesting differences in stabilization by spatial processes. However, metacommunity variability was more strongly driven by local variability than by spatial synchrony. Across a broader range of taxa, our results suggest that high γ-diversity does not consistently stabilize aggregate properties at regional scales without sufficient spatial β-diversity to reduce spatial synchrony.