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Effects of forest cover pattern on water quality of low-order streams in an agricultural landscape in the Pirapora river basin, Brazil.
de Mello, Kaline; Valente, Roberta Averna; Ribeiro, Marina Pannunzio; Randhir, Timothy.
Afiliação
  • de Mello K; Department of Ecology, University of São Paulo (USP), Matão Street, São Paulo, SP, 321, 05508-090, Brazil.
  • Valente RA; Department of Environmental Science, Federal University of São Carlos, Sorocaba Campus. João, Leme dos Santos Road (SP-264), km 110, Sorocaba, SP, 18052-780, Brazil.
  • Ribeiro MP; PhD student of the Program in Planning and Use of Renewable Resources - PPGPUR, Federal University of São Carlos, Sorocaba Campus. João, Leme dos Santos Road (SP-264), km 110, Sorocaba, SP, 18052-780, Brazil. marinapr@estudante.ufscar.br.
  • Randhir T; Department of Environmental Conservation, University of Massachusetts, Holdsworth Hall, 160 Holdsworth Way, Amherst, MA, USA.
Environ Monit Assess ; 194(3): 189, 2022 Feb 14.
Article em En | MEDLINE | ID: mdl-35165807
Low-order streams are important places for river formation and are highly vulnerable to changes in terrestrial ecosystems. Thus, the land-use/land-cover plays an important role in the maintenance of water quality. However, only land-use/land-cover composition may not explain the spatial variation in water quality, because it does not consider land-use/land-cover configuration and forest cover pattern. In this context, the study aimed to evaluate the forest cover pattern effects on water quality on low-order streams located in an agricultural landscape. Applying a paired watershed method, we selected two watersheds classified according to their morphometry and average slope to discard other physical factors that could influence the water quality. Land-use/land-cover pattern was analyzed for composition and forest cover configuration using landscape metrics, including the riparian zone composition. Water quality variables were obtained every two weeks during the hydrological year. This way, watersheds had similar morphometry, slope, and land-use/land-cover composition but differed in forest cover pattern. Watershed with more aggregated forest cover had a better water quality than the other one. The results show that forest cover contributes to water quality maintenance, while forest fragmentation influences the water quality negatively, especially in sediment retention. Agricultural practices are sources of sediment and nutrients to the river, especially in steep relief. Thus, in addition to land-use/land-cover composition, forest cover pattern must be considered in management of low-order streams in tropical agricultural watersheds.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Qualidade da Água / Ecossistema País/Região como assunto: America do sul / Brasil Idioma: En Revista: Environ Monit Assess Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
Buscar no Google

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Qualidade da Água / Ecossistema País/Região como assunto: America do sul / Brasil Idioma: En Revista: Environ Monit Assess Assunto da revista: SAUDE AMBIENTAL Ano de publicação: 2022 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda