2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
5/22/2018 | 11:45 AM - 12:00 PM | FUNCTIONAL FEATURES OF FISH COMMUNITIES FROM MEDITERRANEAN-CLIMATE STREAMS SHOW CONTRASTING RESPONSES TO DISTURBANCES | 310 B
FUNCTIONAL FEATURES OF FISH COMMUNITIES FROM MEDITERRANEAN-CLIMATE STREAMS SHOW CONTRASTING RESPONSES TO DISTURBANCES
Fish communities from streams and rivers in Mediterranean-climate regions present alarming declines over the last decades, and this is expected to continue due the effects of global change. Thus, more information is still needed on how freshwater fauna will respond to different types of disturbances. Here we explored community responses of fish from Mediterranean streams to anthropogenic impacts measured by the Mediterranean Reference Condition index, biotic pressures by means of the abundance of alien species, and natural environmental changes measured by flow intermittence. We used both quantitative (measured body length) and multichoice traits (reophily, feeding and reproduction habitat, feeding diet and lifespan extracted from literature) to analyse changes in traits, functional redundancy, functional richness, and response diversity. Functional redundancy decreased with flow intermittence independently of anthropogenic stressors, whereas the functional redundancy of invertivorous native fish decreased only with the combined effect of both disturbances. This suggests that anthropogenic disturbances in combination with flow intermittence could risk the resilience capacity of native fish feeding on invertebrates and, in turn, alter the whole ecosystem functioning. Biotic pressures negatively affected native species richness and altered most of functional metrics.
- Functional Ecology
- Disturbance
- Multi-stressors
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Presenters/Authors
Núria Cid
(), INRAE, nuria.cid-puey@inrae.fr;
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Dolors Vinyoles
(), University of Barcelona, d.vinyoles@ub.edu;
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Pablo Rodríguez-Lozano
(), Department of Geography, University of the Balearic Islands, 07122 Palma, Spain, pablo.rodriguez@uib.es;
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Cayetano Gutiérrez-Cánovas
(), University of Barcelona, cayeguti@um.es ;
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Nuria Bonada
(), University of Barcelona, bonada@ub.edu;
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Pau Fortuño
(), University of Barcelona, pfortuno@ub.edu;
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Jérôme Latron
(), IDAEA-CSIC, jerome.latron@idaea.csic.es;
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Pilar Llorens
(), IDAEA-CSIC, pilar.llorens@idaea.csic.es;
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Francesc Gallart
(), IDAEA-CSIC, francesc.gallart@idaea.csic.es;
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Narcís Prat
(), University of Barcelona, nprat.ub.edu;
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