Multidisciplinary approach to assess the water self-depuration characteristics of Suquía River (Córdoba, Argentina)
Carolina Merlo,Adriana Abril +1 more
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In this article, the authors analyzed the water self-depuration capacity along a polluted river (Suquia River) in Argentina: abundance of microbial metabolic groups, cover and type of vegetation, and type and concentration of soil and sediment humic substances.Abstract:
We analyzed the following characteristics of water self-depuration capacity along a polluted river (Suquia River) in Argentina: (a) abundance of microbial metabolic groups, (b) cover and type of vegetation, and (c) type and concentration of soil and sediment humic substances. The objective was to establish the modifications of water self-depuration characteristics of the polluted sites in comparison to a reference site in order to provide basic data for ecological restoration programs. Five samples of riparian soil, water, and sediments were collected at a reference site and five polluted sites during low- and high-flow water periods. In each site the vegetation type and soil cover were recorded. In all samples the abundance of ammonifiers, nitrate reducers, sulfate reducers, cellulolytic microorganisms, aerobic heterotrophs, and fermenters was measured. Besides, soil and sediment organic matter and humic and fulvic acids content were analyzed. Our results showed that all sites differed in their water self-depuration characteristics with respect to the reference site and that these variations are due to a combination of natural and anthropic factors. The Suquia River presents a great heterogeneity of water self-depuration characteristics but it does not achieve a mitigation of the anthropogenic impact produced by Cordoba city. We concluded that restoration actions in lotic ecosystems should be adapted for each river sector.read more
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A multilevel response approach reveals the Asian clam Corbicula largillierti as a mirror of aquatic pollution
Paola Beatriz Reyna,Paola Beatriz Reyna,Maria Laura Ballesteros,Maria Laura Ballesteros,M.L. Albá,Lidwina Bertrand,Lidwina Bertrand,María Jesús González González,Karina S.B. Miglioranza,Marcos Tatián,Marcos Tatián,Andrea Cecilia Hued,Andrea Cecilia Hued +12 more
TL;DR: The results showed the presence of contaminants along the studied river and the ability of C. largillierti to bioaccumulate them, and suggest this species as an useful bioindicator of aquatic pollution.
Journal ArticleDOI
Chemical and spectroscopic characterization of humic substances from sediment and riparian soil of a highly polluted urban river (Suquía River, Córdoba, Argentina)
Carolina Merlo,Carolina Merlo,Carolina Vázquez,Ana G. Iriarte,Carlos M. Romero,Carlos M. Romero +5 more
TL;DR: In this paper, organic matter dynamics and humic substances (HS) spectrochemical properties along the lower-middle basin of the Suquia River were investigated. But the results were limited to a small portion of the river basin.
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