2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/22/2018 | 10:00 AM - 10:15 AM | COMMUNITY RESPONSES TO NATURAL AND ANTHROPOGENIC DISTURBANCES: STRUCTURAL AND FUNCTIONAL INSIGHTS FROM MEDITERRANEAN STREAMS | 310 B
COMMUNITY RESPONSES TO NATURAL AND ANTHROPOGENIC DISTURBANCES: STRUCTURAL AND FUNCTIONAL INSIGHTS FROM MEDITERRANEAN STREAMS
Natural and anthropogenic disturbances are expected to increase under global change. Methods to improve management and conservation of freshwater ecosystems urge to disentangle the effects of both disturbance types. Current methods that assess the ecological status of rivers are designed to detect anthropogenic disturbances but their performance in combination with natural ones is unclear. In this study we investigated if natural disturbances can modulate the effect of anthropogenic ones. We also assessed the reliability of commonly used taxonomic metrics in ecological status assessment on detecting both disturbances and investigated the potential use of several functional metrics. Flow intermittence (comparison between perennial vs intermittent rivers) was used as a measure of natural disturbance, whereas multiple human pressures measured with the Mediterranean Reference Condition index were used as a measure of anthropogenic ones. Results showed that as flow intermittence increases, the response of current taxonomic metrics to anthropogenic disturbances was low or not significant, whilst some functional metrics did. Therefore, new metrics based on functional properties of the community can be useful tools for biomonitoring highly dynamic systems such as intermittent rivers.
- Bioassessment
- Multi-stressors
- Functional Ecology
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Presenters/Authors
Maria Soria Extremera
(), IDAEA-CSIC and University of Barcelona, mariasoriaextremera@gmail.com;
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Nuria Bonada
(), University of Barcelona, bonada@ub.edu;
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Cayetano Gutiérrez-Cánovas
(), University of Barcelona, cayeguti@um.es ;
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Raúl Acosta
(), Universitat de Barcelona, racosta@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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Narcís Prat
(), University of Barcelona, nprat.ub.edu;
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Francesc Gallart
(), IDAEA-CSIC, francesc.gallart@idaea.csic.es;
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Núria Cid
(), INRAE, nuria.cid-puey@inrae.fr;
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