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Revista Peruana de Medicina Experimental y Salud Publica

Print version ISSN 1726-4634


CALIZAYA-ANCO, José; AVENDANO-CACERES, Miriam  and  DELGADO-VARGAS, Irma. Evaluation of the quality of river water with diatoms (Bacillariophyceae): an experience in Tacna, Peru. Rev. perú. med. exp. salud publica [online]. 2013, vol.30, n.1, pp.58-63. ISSN 1726-4634.

In order to evaluate the quality of the water of the Locumba river, Tacna (Peru), water samples were taken from ten stations located along the Locumba river basin, during six periods in an annual cycle. The diversity and number of diatoms was also evaluated, together with eleven physiochemical parameters in order to determine the degree of water contamination. We found that as the basin advanced down the mountain, the diversity of diatoms decreased from 2.37 bits cell-1 to 0.71 bits cell-1 and the gradient of contaminants increased. In addition to this increase, the number of species tolerant to high levels of environmental disturbance rose. An increase in all physiochemical parameters used to evaluate the degree of contamination was observed. These results suggest that diatoms can be adequate bioindicators when evaluating the quality of water in this basin

Keywords : Limnology; Stream flow; Diatoms; River pollution; Ecosystem.

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