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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

ffects of forest cover pattern on water quality of low-order streams in an agricultural landscape in the Pirapora river basin, Brazi

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de Mello, Kaline [1] ; Valente, Roberta Averna [2] ; Ribeiro, Marina Pannunzio [3] ; Randhir, Timothy [4]
Total Authors: 4
[1] Univ Sao Paulo, Dept Ecol, Matao St 321, BR-05508090 Sao Paulo, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Environm Sci, Sorocaba Campus Joao, Leme Dos Santos Rd SP-264, BR-18052780 Sorocaba, SP - Brazil
[3] Univ Fed Sao Carlos, PhD Student Program Planning & Use Renewable Reso, Sorocaba Campus Joao, Leme Dos Santos Rd SP-264, BR-18052780 Sorocaba, SP - Brazil
[4] Univ Massachusetts, Dept Environm Conservat, Holdsworth Hall, 160 Holdsworth Way, Amherst, MA - USA
Total Affiliations: 4
Document type: Journal article
Web of Science Citations: 0

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. (AU)

FAPESP's process: 18/21612-8 - Decision-making process structuring, aiming at the prioritization of the area for hydric ecosystem services programs
Grantee:Roberta Averna Valente B Tolini
Support type: Regular Research Grants
FAPESP's process: 13/03586-6 - Forest conservation in maintaining water quality of watersheds
Grantee:Kaline de Mello
Support type: Scholarships in Brazil - Doctorate