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Saline waters and macroinvertebrates in subtropical Andean streams Ecología austral
González Achem,Ana Lucía; Rolandi,María Laura; Fernández,Hugo Rafael.
Salinity of rivers is an expression of the concentration of salts dissolved in the water body. Secondary salinization is the increase in salinity of a water body as a result of human activity. Salinity may restrict the species composition of aquatic biota to tolerant species. In this study we analyzed benthic communities and their relationship with physicochemical variables in natural pristine systems and impacted environments. We collected benthic community samples using a D-net and water samples for laboratory major ions analysis. We noted a critical limit of electrical conductivity above 800µS/cm breaking up taxa pools of benthic macroinvertebrates. We observed that taxonomic richness is a sensitive indicator to detect effects of secondary salinization....
Tipo: Info:eu-repo/semantics/article Palavras-chave: South America; Secondary salinization; Benthic community; Seasonal rainfall; Salt mining.
Ano: 2015 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2015000100004
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