Estimativa do custo de restauração da qualidade da água e recuperação da fauna Bentônica do Rio Pitimbu-RN

• Autor(a) principal: Dias, Amanda Félix
• Data de Publicação: 2016
• Tipo de documento: Trabalho de conclusão de curso
• Idioma: por
• Título da fonte: Repositório Institucional da UFRN
• Texto Completo: https://repositorio.ufrn.br/handle/123456789/43333
• topic: Macroinvertebrados Bentônicos; Bentic Macroinvertebrate; Valoração econômica; Economic valuation; Bacia hidrográfica do Rio Pitimbu; Pitimbu’s River Basin

The incorporation of biomonitoring techniques for evaluation of natural and exhaustible resources is becoming more frequent. Biomonitoring use indices based on the characteristics of the aquatic community. There are few studies that link this kind of monitoring with the economic part of the resource. This work had as main objective the evaluation of water quality of the river Pitimbu / RN, using the benthic macroinvertebrate community to estimate the cost of restoring water quality and the recovery of the benthic fauna. Therefore, we applied five biotic indices, two diversity indices families of and economic valuation technique with the replacement cost method. The methodology was developed in 2015. The samples were taken at two points in Pitimbu river : the source and the mouth. It can be inferred that the river has significant alterations, according to the indexes used in the biotic community and water quality. Thus, the Pitimbu River Basin (BHRP) is an ecosystem with an unquestionable importance and it is a producer of economic benefits that justify its environmental recovery, showing that economic efficiency is coupled with the ecological quality. The value found using the valuation method was 159,189,500 reias / year.