Effects of land use and land cover on water quality of low-order streams in Southeastern Brazil: Watershed versus riparian zone

Kaline de Mello, Roberta Averna Valente, Timothy O. Randhir, André Cordeiro Alves dos Santos, Carlos Alberto Vettorazzi

Research output: Contribution to journalArticlepeer-review

209 Citations (Scopus)

Abstract

Land-use/land-cover (LULC) pattern influences water quality, however, this relation may be different for various spatial scales. We evaluated the LULC effects on water quality of tropical low-order streams, comparing watershed and riparian zone models. Water quality parameters were analyzed separately and together using linear mixed and multivariate models. The results indicate that the forest cover plays a significant role in keeping water clean, while agriculture and urban areas lead to water quality degradation. Pasture land had mixed effects, but in general was not correlated with poor water quality. Dissolved oxygen, phosphorus, sediment, and fecal coliforms were influenced by LULC pattern at the watershed scale, while nitrogen and organic matter were more affected by the riparian zone composition. The water quality also varies with seasonal changes in streamflow and temperature. The overall water quality variation is explained better by the LULC composition within the watershed than in the riparian zone.

Original languageEnglish
Pages (from-to)130-138
Number of pages9
JournalCatena
Volume167
DOIs
Publication statusPublished - Aug 2018
Externally publishedYes

Bibliographical note

Funding Information:
This study was supported by the São Paulo Research Foundation (FAPESP, process number 2013-03586-6 ). We also thank the University of São Paulo and the University of São Carlos for the structural support; Dr. Adriana Cristina Poli Miwa (University of São Paulo) and Monica Almeida (University of São Carlos) for helping in the samples processing; and Dr. John T. Finn (University of Massachusetts) for helping with the statistical analysis.

Publisher Copyright:
© 2018 Elsevier B.V.

Fingerprint

Dive into the research topics of 'Effects of land use and land cover on water quality of low-order streams in Southeastern Brazil: Watershed versus riparian zone'. Together they form a unique fingerprint.

Cite this