Abstract
Urban lagoon systems have undergone change in their physical, ecological and environmental issues. Anthropic pressure and lack of planning in the deployment of public services, specifically in regard to water supply and sanitation are observed. It is also noticed that urban lagoon systems have been a frequent target location for effluent discharge and illegal connections. It is necessary to build a management model that allows for the development of proposals aimed at mitigation of environmental impacts * Advogado, Mestre em Engenharia Ambiental pelo Instituto Federal de Educacao, Ciencia e Tecnologia Fluminense, IF Fluminense, Brasil. Doutorando em Engenharia Civil pelo COPPE/UFRJ. E-mail: frankpavan@gmail.com. 54 Frank Pavan de Souza Boletim do Observatorio Ambiental Alberto Ribeiro Lamego, Campos dos Goytacazes/RJ, v. 4, n. 2, p. 53-73, jul. / dez. 2010 caused by human action. The main objective of this work is to present environmental evaluation methods that can be used in a model of adaptive management for urban lagoons. To initiate the investigations, a comparative study was carried out which enabled the identification of methods that can be applied to evaluate aspects of the water body and its surroundings. It was concluded that environmental evaluation methods can support Governmental agencies, once costs and benefits can be estimated by analyzing demand and availability of natural resources, particularly water resources.
Highlights
Urban lagoon systems have undergone change in their physical, ecological and environmental issues
The main objective of this work is to present environmental evaluation methods that can be used in a model of adaptive management for urban lagoons
It was concluded that environmental evaluation methods can support Governmental agencies, once costs and benefits can be estimated by analyzing demand and availability of natural resources, water resources
Summary
Resumo Os sistemas lagunares urbanos têm sofrido alterações em suas características físicas, ecológicas e ambientais. Faz-se necessário construir um modelo de gestão que permita desenvolver propostas com vistas à mitigação dos impactos ambientais decorrentes das ações antrópicas. O trabalho tem como principal objetivo apresentar os métodos de valoração ambiental que podem ser utilizados no modelo de gestão adaptativa para sistemas lagunares urbanos. Realizou-se um estudo comparativo que permitiu identificar que métodos poderão ser aplicados para valorar o conjunto de aspectos verificados no entorno do corpo hídrico. Conclui-se que os métodos de valoração ambiental podem dar suporte ao Poder Público, pois por meio da economia é possível estimar custos e benefícios, empregando a análise da demanda e disponibilidade dos recursos naturais, especificamente dos recursos hídricos.
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