2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/23/2019 | 10:15 AM - 10:30 AM | THE ROLE OF MULTI-SCALE BIODIVERSITY IN METACOMMUNITY TEMPORAL STABILITY | 151 G
THE ROLE OF MULTI-SCALE BIODIVERSITY IN METACOMMUNITY TEMPORAL STABILITY
Metacommunity theory has been largely tested through spatial analysis of data; focusing on species dispersal abilities, spatial scale, habitat connectivity, and network structure. However, less work has focused on the temporal dynamics of metacommunities. Systems theory poses that stability in spatially-structured systems emerges from local stability and the degree of spatial asynchrony among locales. Previous research has focused on local stability or regional synchrony—often overlooking the interactions among the two. Here we present the results of work examining the interactions between drivers of local stability, primarily local biodiversity; and drivers of regional synchrony, focusing on spatial scale and the regional diversity of species and environmental characteristics. The analyses were performed using spatially-explicit, decadal-scale datasets of freshwater fishes, invertebrates, and macrophytes. We found that metacommunity-level stability was positively influenced by asynchrony, which was in turn driven by b-diversity, y-richness, environmental dissimilarity, and a-diversity. However, local-scale stability, driven primarily by a-diversity and y-richness , had a greater positive impact on metacommunity stability than asynchrony. Biodiversity loss and habitat homogenization are thus expected to erode metacommunity stability in freshwater ecosystems—understanding exactly how is key to anticipating systemic impacts.
- Network
- Distribution
- Temporal
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Presenters/Authors
Christopher Patrick
(), Virginia Institute of Marine Science (VIMS), cpatrick@vims.edu;
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Kevin McCluney
(), Bowling Green State University, kmcclun@bgsu.edu;
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Albert Ruhi
(), Department of Environmental Science, Policy, and Management, University of California Berkeley, albert.ruhi@berkeley.edu;
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