Estudo experimental e matemático de qualidade da água com base na ecohidrologia fluvial de pequenas bacias: estudo de caso do rio Canha, Baixo Ribeira de Iguape, SP

Bottino, Flávia

doi:10.11606/d.18.2008.tde-16072008-193746

Cited by 7 publications

(13 citation statements)

References 18 publications

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“…Regarding the self-purification 3 process of rivers and streams, freshwater monitoring is critical for understanding the changes of pollutant concentrations in different seasons (Bottino, 2008;. To assess self-purification characteristics, qualiquantitative parameters were included into the FMP of the headwaters of the main tributary rivers to Sistema Cantareira: Jaguari (1.000 km 2 ), Cachoeira (392 km 2 ) and Atibainha (315 km 2 ) to find possible seasonal changes of pollutants or macronutrients (see Table 3.1).…”

Section: Methodsmentioning

confidence: 99%

Water security and ecosystem-based adaptation in the headwaters of Cantareira Water Supply System, Brazil

Taffarello¹

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Section: Methodsmentioning

confidence: 99%

Water security and ecosystem-based adaptation in the headwaters of Cantareira Water Supply System, Brazil

Taffarello¹

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“…Nesse trabalho o autor deu ênfase aos problemas decorrentes da eutrofização e salientou a importância de considerar as questões da biodiversidade urbana não só do ponto de vista ecológico, mas também equiparando-as com aspectos hidrológicos, e considerando relevante o estudo da qualidade da água como parte dos planos e projetos de restauração da biodiversidade em busca de rios mais saudáveis. Bottino & Mendiondo (2009) apresentaram os resultados de um trabalho desenvolvido no Rio Canha.…”

Section: Ecohidrologiaunclassified

Poluição difusa da drenagem urbana ecohidrológica: diagnóstico atual e cenários de longo prazo em bacias urbanas de São Carlos, SP

Zaffani¹

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Urban drainage is influenced by the frequency of floods, the increase of diffuse pollution and the degradation of water quality. As a component of research projects FINEP/MAPLU "Urban Water Management" and FAPESP-IAV "Assessment of Impacts and Vulnerability to Climate Change in Brazil and Strategies for Adaptation Options", this study aimed to do experimental analyses and quali-quantitative modeling of diffuse pollution of urban drainage based on ecohydrology. The study was developed at the urban area of São Carlos, in 5 subbasins with drainage area between 3,4 and 75,6 km². The urbanization varies between 0 and 100% and the runoff potential (CN) between 58 to 95. Evaluating the continuity of the river, we can notice the impact of urbanization in decreasing water quality from upstream to downstream. Experimental analyses were made in 14 points and the quality variables oscillated between 235-35.000 kg/km²/yr to COD; 0-7300 kg/km²/yr to BOD; 0-1378 kg/km²/yr to N-NH3; 0-133 kg/km²/yr to total phosphorus and 7,8x104-1,3x107 MPN/km²/ano to fecal coliform. The highest values of specific charge for COD, N-NH3 and phosphorus were observed at sub-basins with high degree of urbanization. Two ecohydrological indicators were estimated. The continuity indicator X1, relates to the number of lateral affluents and to the length of the river. X18 is related to vulnerability, and obtained by the product between velocity and depth. The indicator X1 showed different behaviors in sub-basins, while X18 increased in direction upstream to downstream. Both indicators didn't show a tipical behavior. Mathematical modeling used SWMM model to simulate scenarios of macrodrainage based on land use changes adapted from Millenium Ecosystem Assessment. Rainfall of project with return period of 10 years was used to simulate scenarios in all subbasins according to the macrozoning, ranging values for runoff potential (CN), slope and rugosity coefficient. The scenarios were simulated with horizons of use and occupation for the years 2025, 2050, 2075 e 2100. The reactive scenarios ("GO" and "OS") showed maximum specific flow and maximum specific load higher than the proactives scenarios ("AM" and "TG"). The results indicated that the variability quali-quantitative of an urban drainage is affected by antropogenic factors, like wastewater and lack of planning, and also by ecohydrologic criteria. This fact sugests the necessity of a significant increase in the monitoring and simulations quali-quantitaives of the diffuse pollution in urban drainage.

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“…Estudos desenvolvidos em outros rios mais preservados da região: rio Canha (FERRAZ, 2008;BOTTINO, 2008) …”

Section: Os Valores De Turbidez Observados No Mês De Janeiro (Maior Punclassified

“…De acordo com Bottino (2008) e Ferraz (2008, apesar desse ser um dos rios mais preservados da região, as atividades antrópicas em sua microbacia já podem ser percebidas, com retirada da mata ciliar em algumas porções para plantação de banana e pecuária. Ao analisar os dados de qualidade da água, Ferraz (2008) …”

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A sub-bacia do rio Jacupiranga: análise dos aspectos sócio-econômicos e ambientais como subsídio para o manejo sustentável da região do Vale do Ribeira de Iguape, São Paulo

Cunha¹

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Estudo experimental e matemático de qualidade da água com base na ecohidrologia fluvial de pequenas bacias: estudo de caso do rio Canha, Baixo Ribeira de Iguape, SP

Cited by 7 publications

References 18 publications

Water security and ecosystem-based adaptation in the headwaters of Cantareira Water Supply System, Brazil

Water security and ecosystem-based adaptation in the headwaters of Cantareira Water Supply System, Brazil

Poluição difusa da drenagem urbana ecohidrológica: diagnóstico atual e cenários de longo prazo em bacias urbanas de São Carlos, SP

A sub-bacia do rio Jacupiranga: análise dos aspectos sócio-econômicos e ambientais como subsídio para o manejo sustentável da região do Vale do Ribeira de Iguape, São Paulo

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