URBANIZATION JEOPARDIZES WATER QUALITY IN VACACAÍ AND VACACAÍ-MIRIM HYDROGRAPHIC BASIN, SANTA MARIA, RS, BRAZIL
DOI:
https://doi.org/10.5902/2179460X17395Keywords:
ecossistemas lóticos, variáveis abióticas, Vacacaí, Santa Maria, qualidade da águaAbstract
http://dx.doi.org/10.5902/2179460X17395
The hydrographic basin of the rivers Vacacaí and Vacacaí-Mirim, in Santa Maria, RS, Brazil, is subjected to strong anthropic influence, and the study here described aimed at evaluating water quality in these rivers using physical and chemical analyses. Water samples were collected in six sampling stations, monthly for 12 months (June 2011 to June 2012). Biochemical oxygen demand (BOD), chemical oxygen demand (COD), pH, suspended solids (SS), conductivity, turbidity and dissolved oxygen were measured. The results were compared to the classes of water use given by the National Environment Council in the Resolution 357/2005. A principal components analysis (PCA) was performed in order to identify the interaction among the abiotic variables. A spatial association of the variables was visible, rather than grouping by sampling date, indicating effects of urbanization on water quality.
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ANDRADE, E. M. et al. Seleção dos indicadores da qualidade das águas superficiais pelo emprego da análise multivariada. Engenharia Agrícola, v.27, p.683-690, 2007.
APHA, AWWA, WEF. Standard methods for the Examination of water and Wastewater. 20a ed., Public Health Association Inc., New York, 1998. Brasil. CONAMA - Conselho Nacional do Meio Ambiente: Resolução n0 357. Diário Oficial da União 17/03/2005
Brites, A. P. Z. Avaliação da qualidade da água e dos resíduos sólidos no sistema de drenagem urbana. 2005. Dissertação (Mestrado em Engenharia Civil) Universidade Federal de Santa Maria, Santa Maria, 2005.
CARVALHO, A.R.; SCHLITTLER, F.H.M.; TORNISIELO, V.L. Relações da atividade agropecuária com parâmetros físicos químicos da água. Química Nova, v.23, n.5, p. 618-622, 2000.
GASTALDINI, M., C., C., DO. et al. Diagnóstico da qualidade da água na bacia hidrográfica do rio Vacacaí Mirim. xxx congreso interamericano de ingeniería sanitaria y ambiental, 2006. Punta Del Este. Anais... Uruguay. 2006.
GUIMARÃES, R. J.; NOUR, A. A. Tratando nossos esgotos: processos que imitam a natureza. Cadernos Temáticos de Química Nova na Escola (Meio Ambiente), n.1, p. 19-30, 2001.
Hair, J. F. J. et al. Análise multivariada de dados. 6º edição. Porto Alegre, 2009.
INMET. Instituto Nacional de Meteorologia. Disponível em: <http://www.inmet.gov.br/portal/>. Acesso em: 20 out. 2014.
LIBÂNIO, M. Fundamentos de qualidade e tratamento de água. Campinas, SP: Editora Átomo, 2005.
LOPES, F. W. A. et al. Análise da qualidade da água, Degradação Ambiental e Atividade Turística no entorno da Cachoeira da Fumaça, Carrancas- MG. In: Simpósio Brasileiro de Geografia Física Aplicada, São Paulo: USP. p. 4855-4862, 2005.
MARCHESAN, E. Qualidade de água dos rios Vacacaí e Vacacaí-Mirim no Estado do Rio Grande do Sul, Brasil. Ciência Rural, Santa Maria, v.39, n.7, p.2050-2056, 2009.
MCCUNE, B.; MEFFORD, M. J. PC-ORD for windows (software). Multivariate analysis of ecological data, Version 4.14. MjM Software, Gleneden Beach, OR, USA, 1999.
SEMA. Secretaria do meio ambiente do Estado do Rio Grande do Sul. Disponível em: <http://www.sema.rs.gov.br/>. Acesso em 23 out. 2014.
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