2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/25/2021 | 8:30 AM - 10:30 AM | CAN HYDROLOGICAL CONNECTIVITY AFFECT MACROINVERTEBRATE METACOMMUNITY ASSEMBLY IN MEDITERRANEAN STREAMS AT SMALL SPATIAL SCALES? | Virtual Platform
CAN HYDROLOGICAL CONNECTIVITY AFFECT MACROINVERTEBRATE METACOMMUNITY ASSEMBLY IN MEDITERRANEAN STREAMS AT SMALL SPATIAL SCALES?
According to the metacommunity theory, environmental filtering should prevail over spatial factors at small spatial scales due to low dispersal limitations. However, Mediterranean streams have wide hydrological changes that affect network connectivity and aquatic metacommunities. For example, in Mediterranean stream networks, sites that are close in space can be fairly isolated from each other due to seasonal drying. Here we studied 25 sites belonging to 7 pristine and small stream networks in northeast of Spain. We hypothesized that hydrological connectivity could play a significant role in explaining metacommunity assembly at very low spatial scales, especially for obligate aquatic taxa. We focused on aquatic macroinvertebrates due to their abundance, diversity and wide range of dispersal strategies. We measured flow permanence using data-loggers and local habitat variables, and calculated hydrological connectivity using network analysis. In this talk we will present our preliminary results and discuss the importance of hydrological connectivity for regional biodiversity in stream networks with recurrent drying.
- Dry rivers
- IRES
- Non-perennial rivers
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Presenters/Authors
José Mª Fernández-Calero
(), University of Barcelona, josefernandezcalero@ub.edu;
ASHA DISCLOSURE:
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Nuria Bonada
(), University of Barcelona, bonada@ub.edu;
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Miguel Cañedo-Argüelles
(), University of Barcelona, mcanedo.fem@gmail.com;
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