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860278.pdf (2.28 MB)

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2024-04-25

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cc-by (c) Soria Extremera, Maria, et al., 2024
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/224165

Analysing the contribution of intermittent rivers to beta diversity can improve freshwater conservation in Mediterranean rivers

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https://doi.org/10.1007/s00027-024-01074-x

Resum

In Mediterranean climate regions, intermittent rivers (IRs) harbor highly dynamic communities with species and trait composition changing over time and space. Simultaneously considering multiple biodiversity facets and a spatiotemporal perspective is, therefore, key to developing effective conservation strategies for these ecosystems. We studied the spatiotemporal dynamics of aquatic macroinvertebrates in rivers of the western Mediterranean Basin by analysing (1) the taxonomic and functional richness and the local contribution to beta diversity (LCBD; measured considering taxonomic and functional facets) of perennial rivers and IRs over five sampling times, and (2) their relation with flow intermittence, local environmental uniqueness, and the number of anthropogenic impacts. Both analyses were also conducted for the subset of data including only IRs to compare values between their flowing and disconnected pool phases. According to our results, taxonomic and functional richness tended to be higher in perennial rivers than in IRs, while taxonomic and functional LCBD tended to be higher in IRs than in perennial rivers. When comparing IR sites over time, higher values of taxonomic and functional LCBD corresponded mostly to their disconnected pool phase. Flow intermittence, the number of anthropogenic impacts and th environmental uniqueness were significant predictors of taxonomic and functional richness, but only flow intermittence was an important predictor of taxonomic LCBD. For the IR-only data subset, disconnected pool permanence was the main predictor explaining spatiotemporal patterns. Our results highlight the importance of IRs to biodiversity conservation of Mediterranean climate rivers, especially during the disconnected pool phase, suggesting that these ecosystems cannot be ignored in conservation planning strategies.

Matèries

Ecologia d'aigua dolça, Mediterrània (Costa)

Matèries (anglès)

Freshwater ecology, Mediterranean Coast

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Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)
Articles publicats en revistes (Institut de Recerca de l'Aigua (IdRA))
Articles publicats en revistes (Institut de Recerca de la Biodiversitat (IRBio))

Citació

SORIA EXTREMERA, Maria, BONADA I CAPARRÓS, Núria, CID PUEY, Núria, ORTEGA, Jean carlo gonçalves, BINI, Luis mauricio, ACOSTA RIVAS, Carlos raul, GUTIÉRREZ-CÁNOVAS, Cayetano, RODRÍGUEZ LOZANO, Pablo, FORTUÑO, Pau, VINYOLES CARTANYÀ, Dolors, GALLART GALLEGO, Francesc, PRAT I FORNELLS, Narcís. Analysing the contribution of intermittent rivers to beta diversity can improve freshwater conservation in Mediterranean rivers. _Aquatic Sciences - Research Across Boundaries_. 2024. Vol. 66, núm. 1-13. [consulta: 5 de gener de 2026]. ISSN: 1015-1621. [Disponible a: https://hdl.handle.net/2445/224165]

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