Integrating three tools for the environmental assessment of the Pardo River, Brazil

Autor(es)

Machado, Carolina S. ^[1] ; Alves, Renato I. S. ^[1] ; Fregonesi, Brisa M. ^[1] ; Beda, Cassio F. ^[1] ; Suzuki, Meire N. ^[1] ; Trevilato, Rudison B. ^[1] ; Nadal, Marti ^[2] ; Domingo, Jose L. ^[2] ; Segura-Munoz, Susana I. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Coll Nursing Ribeirao Preto, Lab Ecotoxicol & Environm Parasitol, BR-14049 Ribeirao Preto, SP - Brazil

^[2] Univ Rovira & Virgili, IISPV, Lab Toxicol & Environm Hlth, E-43201 Reus, Catalonia - Spain

• Tipo de documento: Artigo Científico
• Fonte: ENVIRONMENTAL MONITORING AND ASSESSMENT; v. 187, n. 9 SEP 2015.
• Citações Web of Science: 3

Resumo

There is a growing need for strategic assessment of environmental conditions in river basins around the world. In spite of the considerable water resources, Brazil has been suffering from water quality decrease in recent years. Pardo River runs through Minas Gerais and Sao Paulo, two of the most economically important states in Brazil, and is being currently promoted as a future drinking water source. This study aimed at integrating three different tools to conduct a hydromorphological assessment focused on the spatial complexity, connectivity, and dynamism of the Pardo River, Brazil. Twelve sampling stretches were evaluated in four sampling campaigns, in dry and rainy seasons. In each stretch, permanent preservation areas (PPAs), hydromorphological integrity by rapid assessment protocol (RAP), and physicochemical parameters were qualified. The kappa coefficient was used to assess statistical agreement among monitoring tools. The PPA analysis showed that in all stretches, the vegetation was modified. RAP results revealed environmental deterioration in stretches located near human activities and less variability of substrates available for aquatic fauna and sediment deposition as well. Low values for dissolved oxygen in the river mouth were noted in the rainy season. Electrical conductivity was higher in stretches near sugarcane crops. The poor agreement (k<0.35) between the RAP and physicochemical parameters indicates that the tools generate different and complementary information, while they are not replaceable. Potential changes of the hydromorphological characteristics and variations in physicochemical indicators must be related to extensive PPA modification. (AU)

• Processo FAPESP: 13/07238-2 - Avaliação de risco à saúde humana a partir de um monitoramento ecotoxicológico, limnológico e microbiológico na Bacia do Rio Pardo (UGRHI04)
• Beneficiário: Susana Segura Muñoz
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 10/50226-7 - Avaliação de parâmetros limnológicos, metais pesados e bioagentes patogênicos no principal curso de água da Bacia Hidrográfica do Pardo
• Beneficiário: Renato Igor da Silva Alves
• Modalidade de apoio: Bolsas no Brasil - Doutorado