2022 Early Hearing Detection & Intervention Virtual Conference
March 13 - 15, 2022
5/26/2021 | 8:30 AM - 10:30 AM | FLOW INTERMITTENCE EFFECT ON AQUATIC AND TERRESTRIAL INVERTEBRATE COMMUNITIES IN NATURALLY SALINE SEMI-ARID STREAMS | Virtual Platform
FLOW INTERMITTENCE EFFECT ON AQUATIC AND TERRESTRIAL INVERTEBRATE COMMUNITIES IN NATURALLY SALINE SEMI-ARID STREAMS
Saline streams in semi-arid regions are frequently affected by flow intermittence. Both salinity and intermittency are natural stressors that shape biological communities. However, we know little about their effects on aquatic invertebrates and even less on terrestrial invertebrate communities. Here, we examined changes in the structure and composition of both invertebrate communities along drying in two intermittent saline streams (SE Spain), distinguishing the wet, contraction and dry phases. We sampled instream aquatic invertebrates during the aquatic phases and terrestrial invertebrates in channels and its shoreline during the three phases. For both communities and in both streams, the greatest abundance and richness occurred during the contraction phase. The aquatic and terrestrial composition significatively differed among phases in both studied streams. Coleoptera, Ephemeroptera, Heteroptera and Odonata were the most important taxa in explaining differences, with their highest abundances in the contraction phase. Formicidae, Araneae and Hemiptera were responsible for terrestrial differences, with higher abundances in the contraction and dry than in the wet phase. These findings report the significant effect of intermittence on invertebrate communities in saline streams, with the contraction phase particularly contributing to the diversity of the communities.
- Aquatic–terrestrial biodiversity
- Dry rivers
- Salinity
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Presenters/Authors
Zeus Freixinos
(), Department of Ecology and Hydrology, University of Murcia, Campus de Espinardo, 30100,Spain, zfreixinos@gmail.com;
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Rosa Gómez
(), Department of Ecology and Hydrology, University of Murcia, 30100 Murcia, Spain., rgomez@um.es;
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Paloma Alcorlo
(), Department of Ecology, Universidad Autónoma de Madrid, Campus de Cantoblanco, 28049, Madrid, Spain, paloma.alcorlo@uam.es;
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Jesús Miñano
(), Department of Ecology and Hydrology, University of Murcia, Campus de Espinardo, 30100,Spain, jmm@um.es;
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María Mar Sánchez-Montoya
(), Department of Ecology and Hydrology, University of Murcia, Campus de Espinardo, 30100,Spain, marsanch@um.es;
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