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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.)

Effects of land use and spatial processes in water and surface sediment of tropical reservoirs at local and regional scales

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Author(s):
Salim, Aline [2] ; Nascimento, Majoi de Novaes [2] ; Bini, Luis Mauricio [3] ; Bicudo, Denise Campos [4]
Total Authors: 4
Affiliation:
[1] Secretaria Estado Meio Ambiente, Ave Prof Freder Hermann Jr 345, BR-05459900 Sao Paulo, SP - Brazil
[2] Florida Inst Technol, Dept Biol Sci, Paleo Ecol Lab, 150 W Univ Blvd, Melbourne, FL 32901 - USA
[3] Univ Fed Goias, Inst Ciencias Biol, Dept Ecol, Ave Esperanca S-N, BR-74690900 Goiania, Go - Brazil
[4] Inst Bot, Dept Ecol, Ave Miguel Stefano 3687, BR-04301012 Sao Paulo, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: Science of The Total Environment; v. 644, p. 237-246, DEC 10 2018.
Web of Science Citations: 9
Abstract

The effects of land use and connectivity on the characteristics of aquatic ecosystems are thought to be scale-dependent. This study aimed to evaluate the relationships between land use and reservoir characteristics at two spatial scales, after controlling for spatial processes. Water and surface sediment samples were collected from 31 sites (7 reservoirs) in the Paiva Castro and Piracicaba River basins (Cantareira System, Sao Paulo State, Brazil), during austral summer and winter. The dataset included 15 water quality variables and 6 surface sediment variables. Land use variables (natural areas, pasture, agriculture and urban areas) were obtained at two spatial scales (buffer and watershed) in each reservoir. Spatial variables were calculated using Moran's Eigenvectors Maps and Asymmetric Eigenvector Maps. The strengths of the relationships between land use and sediment variables were stronger than those between land use and water quality variables. The strengths of some of the relationships were scale-dependent. Finally, spatial processes, mostly hydrological connectivity, play an important role in water-sediment quality and should be considered in landscape management programs. (C) 2018 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/23703-7 - Biodiversity and distribution of diatoms and their use as bioindicators of the quality of the reservoirs in Piracicaba River basin and Cantareira System
Grantee:Stéfano Zorzal de Almeida
Support Opportunities: Scholarships in Brazil - Doctorate
FAPESP's process: 09/53898-9 - Paleolimnological reconstruction of Guarapiranga Reservoir and diagnosis of water and sediment current quality of SPMR water supply reservoirs facing their management
Grantee:Carlos Eduardo de Mattos Bicudo
Support Opportunities: Research Projects - Thematic Grants