Data/hora: 04/06/2024 00:17:00

Provedor de dados: | Brazilian Archives of Biology and Technology
País: | Brazil
Título: | Water quality of the Canchim’s creek watershed in São Carlos, SP, Brazil, occupied by beef and dairy cattle activities
Autores: | Primavesi,Odo; Freitas,Alfredo Ribeiro de; Primavesi,Ana Cândida; Oliveira,Haydée Torres de.
Data: | 2002-06-01
Ano: | 2002
Palavras-chave: | Dairy cattle; Beef cattle; Intensive management; Pasture; Water quality; Watershed.
Resumo: | 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&lt;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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000200013
Editor: | Instituto de Tecnologia do Paraná - Tecpar
Relação: | 10.1590/S1516-89132002000200013
Formato: | text/html
Fonte: | Brazilian Archives of Biology and Technology  v.45 n.2 2002
Fonte: | info:eu-repo/semantics/openAccess