Title:	Water quality of the Canchim's creek watershed in São Carlos, SP, Brazil, occupied by beef and dairy cattle activities.
Authors:	PRIMAVESI, O. M. A. S. P. R. FREITAS, A. R. de PRIMAVESI, A. C. P. de A. OLIVEIRA, H. T. de
Affiliation:	ODO MARIA ARTUR S P R PRIMAVESI, CPPSE; ALFREDO RIBEIRO DE FREITAS, CPPSE; ANA CANDIDA PACHECO DE A PRIMAVESI, CPPSE; HAYDÉE TORRES DE OLIVEIRA, UFSCAR.
Date Issued:	2002
Citation:	Brazilian Archives of Biology and Technology, v.45, n.2, p.209-217, jun. 2002.
Description:	The Canchim?s creek watershed in São Carlos, SP, Brazil, was chosen to evaluate water quality affected by dairy and beef cattle production systems based on tropical pasture. The water samples were collected monthly, during three years, at six sampling points: spring in a tropical forest, spring in an intensive dairy production system, two dam springs, and stream water upward and at the delta. Results showed differences (P<0.01) among sampling points for the mean parameters. True color, hardness, turbidity, electric conductivity, alkalinity, pH, chemical oxygen demand and consumed oxygen explained well differences among sampling points. According to current legislation standards, water quality fitted with most of the established parameters for class 2, with exception of phosphate and iron. The high levels of total phosphorus, except in the forest spring, classified this water in an eutrophic class, even where soil and water conservation practices were considered adequate.
Thesagro:	Gado de Corte Gado Leiteiro Qualidade da Água
NAL Thesaurus:	Dairy cattle Beef cattle Pastures Water quality Watersheds
Keywords:	Sistema de manejo São Carlos Intensive management
Type of Material:	Artigo de periódico
Access:	openAccess
Appears in Collections:	Artigo em periódico indexado (CPPSE)