Water quality monitoring of the Pirapó River watershed, Paraná, Brazil/Monitoramento da qualidade da água na bacia hidrográfica do Rio Pirapó, Paraná, Brasil

This study aimed to evaluate the water quality of the Pirapo River watershed in Parana, Brazil, and identify the critical pollution sites throughout the drainage basin. The water quality was monitored during the period from January 2011 to December 2012. Nine points distributed throughout the main c...

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Bibliographic Details
Published in:Brazilian journal of biology 2015-12, Vol.75 (4), p.148-148
Main Authors: Bortoletto, E C, Silva, H A, Bonifácio, C M, Tavares, C R G
Format: Article
Language:English
Subjects:
Freshwater
Methods
Nitrates
Polyethylene terephthalate
Precipitation
Principal components analysis
Rain
Variables
Water pollution
Water quality
Watersheds
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Summary:This study aimed to evaluate the water quality of the Pirapo River watershed in Parana, Brazil, and identify the critical pollution sites throughout the drainage basin. The water quality was monitored during the period from January 2011 to December 2012. Nine points distributed throughout the main channel of the Pirapo River were sampled for a total of 17 samplings. The water quality was evaluated, based on the determination of 14 physical, chemical and microbiological parameters. The results showed that the nitrate (NO3-), NO2-, TSS, turbidity and total phosphorous (TP) levels were related to the soil type, and the parameters DO, electrical conductivity (EC), ammoniacal nitrogen (N-NH3) and thermotolerant coliforms (TC) were related to organic matter pollution, with the P5 sampling site being the most critical site. The ordination diagram of the sampling points as a function of the PCA indicated a reduction from 9 to 5 sampling points, indicating the potential for decreasing the costs associated with monitoring.
ISSN:1519-6984
1678-4375
DOI:10.1590/1519-6984.00313suppl