Water quality of the Canchim’s creek watershed in São Carlos, SP, Brazil, occupied by beef and dairy cattle activities

Primavesi, O.; Freitas, A. R. de; Primavesi, A. C.; Oliveira, Haydée Torres de

doi:10.1590/s1516-89132002000200013

Cited by 31 publications

(30 citation statements)

References 9 publications

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“…Pelas correlações positivas observadas, o ferro total tem origem nas áreas ocupadas por culturas perenes, matas degradadas e moradias rurais (Figura 4C), fato que pode estar relacionado ao maior carreamento de sedimentos dessas áre-as, associado ao tipo de solo da sub-bacia; resultados semelhantes foram obtidos por Primavesi et al (2002) que, ao estudarem o efeito de atividades agrícolas sobre a qualidade da água ao longo do Córrego Canchim, em São Carlos, encontraram o valor médio mais alto de ferro total (1,4 mg L -1 ) em um ponto exposto às atividades agrícolas.…”

Section: Resultsunclassified

Influência do uso e ocupação do solo nos recursos hídricos do Córrego Três Barras, Marinópolis

Vanzela¹,

Hernández

Franco

2010

Rev. bras. eng. agríc. ambient.

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RESUMOO uso e a ocupação dos solos exercem influência marcante no escoamento superficial e aporte de sedimentos no leito dos mananciais, podendo alterar a qualidade e a disponibilidade da água. Com isto se objetivou com o presente trabalho, verificar a influência do uso e ocupação dos solos sobre os recursos hídricos do córrego Três Barras, município de Marinópolis, SP. Para constatar esta influência, realizou-se uma análise de correlação de Pearson entre os parâmetros de qualidade e disponibilidade de água e o uso e ocupação dos solos, cujos dados foram coletados entre 18/01/2006 a 10/12/2007. Concluiu-se que as áreas ocupadas por matas e pastagens (com menor intensidade) favoreceram a disponibilidade e a qualidade da água na Sub-Bacia. De maneira geral, as áreas habitadas, agricultadas e as matas degradadas, reduziram a disponibilidade e a qualidade da água da Sub-Bacia. ABSTRACTLand occupation and its use have a remarkable influence on the superficial water flow and the carrying of sediments to the riverbed and may change the quality and availability of water. The current study aimed to check the influence of the land occupation and use on the Três Barras stream resources, in Marinópolis, SP, Brazil. To check this influence, an analysis of Pearson´s correlation between the parameters of quality and availability and use of water and land was developed. The samples covered the period of January, 2006 until December, 2007. It may be concluded that areas occupied by forests and pastures (in less intensity) favoured the availability and quality of water of the watershed. The inhabited areas and those used for agriculture, and the degraded forests in general, reduced the availability and quality of water in the watershed.

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Section: Resultsunclassified

Influência do uso e ocupação do solo nos recursos hídricos do Córrego Três Barras, Marinópolis

Vanzela¹,

Hernández

Franco

2010

Rev. bras. eng. agríc. ambient.

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“…This soil types are naturally phosphate poor (Oliveira et al, 1992), indicating that major concentration of phosphate can be related to deforestation or to an external source, like the presence of pasture. Stream draining pasture areas usually contain more phosphorus concentrations than forested areas (Cooper and Thomsen, 1988;Primavesi et al, 2002;Biggs, et al, 2006), due to the use of fertilizers in the management of pasture (Smith and Monaghan, 2003;Sigua and Chase, 2014). The study area does not present a great management of the pastures and, probably, does not have current nutrient application.…”

Section: Discussion Influence Of Dominant Land Use Typesmentioning

confidence: 99%

Influence of landscape properties on stream water quality in agricultural catchments in Southeastern Brazil

Mori

Paula

Ferraz³

et al. 2015

Ann. Limnol. - Int. J. Lim.

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-Changes in land cover, especially the replacement of forest by agricultural activities affect the hydrological processes of river catchments, resulting in physical and chemical compositional changes of water draining from affected basins. The aim of this study was to evaluate landscape influences at different spatial scales (catchment and riparian) on the physical and chemical composition of stream water in 15 agricultural catchments, belonging to the Corumbataı´basin (Brazil). We calculated the average slope (%), average elevation (m), soil classes (%), major land use classes (%), average distance from the forest cover in relation to the hydrographic network (m), largest patch index (%) at the catchment scale and riparian zone of drainage network scale within a 30 m buffer. Water samples were collected in two seasons (dry and rainy) to characterize physical and chemical properties: turbidity, suspended solids, total nitrogen, nitrate and total phosphorus. Our results showed higher concentration of nitrate in sugarcane fields and larger amount of suspended solids and turbidity in pasture areas. We concluded that degraded and highly fragmented forests may not be effectively contributing toward the protection of aquatic ecosystems.

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“…[5][6][7] In general, these impacts have been caused by the absence of riparian vegetation, which is responsible for absorption of toxic products, which come from the neighboring cultivated areas. 1,[8][9][10][11] Every year, sugar cane cultivation, using fertilizers is carried out. This process causes severe damages to the aquatic communities.…”

Section: Introductionmentioning

confidence: 99%

Bioaccumulation of metals in aquatic insects of streams located in areas with sugar cane cultivation

Corbi¹,

Froehlich²,

Strixino³

et al. 2010

Quím. Nova

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Recebido em 6/5/09; aceito em 29/9/09; publicado na web em 23/2/10 Streams located in areas of sugar cane cultivation receive elevated concentrations of metal ions from soils of adjacent areas. The accumulation of metals in the sediments results in environmental problems and leads to bioaccumulation of metal ions by the aquatic organisms. In the present study, bioaccumulation of the metals ions Al, Cd, Cr, Cu, Fe, Mg, Mn and Zn in aquatic insects in streams impacted by the sugar cane was evaluated. The results pointed out that the insects were contaminated by the sediment and that the collector organisms as Chironomus species accumulated higher concentration of metals than the predator organisms.

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Water quality of the Canchim’s creek watershed in São Carlos, SP, Brazil, occupied by beef and dairy cattle activities

Abstract: ABSTRACT

Cited by 31 publications

References 9 publications

Influência do uso e ocupação do solo nos recursos hídricos do Córrego Três Barras, Marinópolis

Influência do uso e ocupação do solo nos recursos hídricos do Córrego Três Barras, Marinópolis

Influence of landscape properties on stream water quality in agricultural catchments in Southeastern Brazil

Bioaccumulation of metals in aquatic insects of streams located in areas with sugar cane cultivation

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