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Títol:
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Effects of potash mining on river ecosystems: An experimental study
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Autor/a:
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Cañedo-Argüelles, Miguel; Carrasco, Sergi; Flor-Arnau, Núria; Ordeix i Rigo, Marc; Ponsá Salas, Sergio; Coring, Eckhard; Brucet Balmaña, Sandra
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Altres autors:
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Universitat de Vic - Universitat Central de Catalunya. Centre Tecnològic BETA; Universitat de Vic - Universitat Central de Catalunya. Centre d'Estudis dels Rius Mediterranis (CERM); Universitat de Vic - Universitat Central de Catalunya. Grup de Recerca en Ecologia Aquàtica |
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Notes:
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In spite of being a widespread activity causing the salinization of rivers worldwide, the impact of potash mining on river ecosystems is poorly understood. Here we used a mesocosm approach to test the effects of a salt effluent coming from a potash mine on algal and aquatic invertebrate communities at different concentrations and release modes (i.e. press versus pulse releases). Algal biomass was higher in salt treatments than in control (i.e. river water), with an increase in salt-tolerant diatom species. Salt addition had an effect on invertebrate community composition that was mainly related with changes in the abundance of certain taxa. Short (i.e. 48 h long) salt pulses had no significant effect on the algal and invertebrate communities. The biotic indices showed a weak response to treatment, with only the treatment with the highest salt concentration causing a consistent (i.e. according to all indices) reduction in the ecological quality of the streams and only by the end of the study. Overall, the treatment's effects were time-dependent, being more clear by the end of the study. Our results suggest that potash mining has the potential to significantly alter biological communities of surrounding rivers and streams, and that specific biotic indices to detect salt pollution should be developed. |
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Matèries:
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-Salinitat
-Rius -- Qualitat
-Invertebrats aquàtics
-Mines de potassa |
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Drets:
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Aquest document està subjecte a aquesta llicència Creative Commons
https://creativecommons.org/licenses/by-nc-nd/4.0/deed.ca
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Tipus de document:
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Article
info:eu-repo/acceptedVersion |
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Publicat per:
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Elsevier
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Compartir:
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