Metodologias para determinar vazão ecológica em rios
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Data
2011-06
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Resumo
The instream flows have the purpose to ensure the minimum conditions for maintenance
of aquatic ecosystems. These flows have been called residual, remaining, ecological and
environmental and are increasingly essential for sustainable management of water
resources. Mostly methodologies to determine the instream flow were developed in the
second half of the twentieth century and at the beginning of this century. This paper
presents an analysis of methodologies used to determine instream flows in rivers. Besides
describing the methods, this study is a summary table of each one, arranging them into
four categories: hydrologic, hydraulic, habitat and holistic according to the approaches to
their conceptions as well as the applicability and inconvenience of each one. Finally
considerations about trends in the adoption of methodologies in Brazil and others
countries are made and some opportunities, necessities of research for the improvement
of existing methodologies as well as for the development of new and more appropriate
methodologies for Brazilian rivers are presented.
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Palavras-chave
Metodologias de vazão ecológica, Ecossistemas aquáticos, Vazão ecológica, Environmental flow methodologies, Aquatic ecosystems, Instream flow
Citação
LONGHI, Eloísa Helena; FORMIGA, Klebber Teodomiro Martins. Metodologias para determinar vazão ecológica em rios. Revista Brasileira de Ciências Ambientais, Rio de Janeiro, v. 20, p. 33-48, jun. 2011.