2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/26/2021 | 8:30 AM - 10:30 AM | CLIMATIC ARIDITY INCREASES TEMPORAL NESTEDNESS OF INVERTEBRATE COMMUNITIES IN NATURALLY DRYING RIVERS | Virtual Platform
CLIMATIC ARIDITY INCREASES TEMPORAL NESTEDNESS OF INVERTEBRATE COMMUNITIES IN NATURALLY DRYING RIVERS
Intermittent rivers are pervasive across nearly every climate type. However, it is unknown whether biodiversity responses to drying are similar across different climates. We gathered a global dataset capturing responses of aquatic invertebrate communities to river drying, which includes 112 sites spanning a gradient of climatic aridity. We measured the effects of river drying on taxonomic richness, temporal ??diversity (turnover and nestedness components, and relative abundance of aquatic invertebrates with strategies that confer resilience (or resistance) to drying. Taxonomic richness recovered from drying similarly across the aridity gradient and the turnover component of ??diversity (i.e. species replacements over time) largely accounted for differences in community composition before versus after drying. However, increasing aridity was associated with greater nestedness?driven compositional changes at intermittent sites – that is, after drying communities became subsets of those before drying. Thus, climatic context can explain variation in community responses to drying, suggesting that increased aridity will constrain biodiversity responses at regional scales. Considering climatic context in hydroecological research may help improve predictions of the local impacts of hydrological disturbance by identifying climate regions where communities are more (or less) sensitive to extremes.
- Ecohydrology
- IRES
- Climate variability
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Presenters/Authors
Ross Vander Vorste
(), Rivers Study Center and Department of Biology - University of Wisconsin La Crosse , vandervorste.ross@gmail.com;
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Rachel Stubbington
(), Nottingham Trent University, rachel.stubbington@ntu.ac.uk;
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Vicenç Acuña
(), Catalan Institute for Water Research (ICRA), vacuna@icra.cat;
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Michael Bogan
(), School of Natural Resources and the Environment, The University of Arizona, mbogan@email.arizona.edu;
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Núria Cid
(), INRAE, nuria.cid-puey@inrae.fr;
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Nuria Bonada
(), University of Barcelona, bonada@ub.edu;
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Thibault Datry
(), INRAE, France, Thibault.datry@inrae.fr;
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Richard Storey
(), National Institute of Water and Atmospheric Research, New Zealand, richard.storey@niwa.co.nz;
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Paul J. Wood
(), Loughborough University, P.J.Wood@lboro.ac.uk;
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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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