Application of the biotic index IBE-IOC for water quality assessment in wadeable streams in south-east Brazil

AIM: This work presents the results of the first water quality assessment using the biotic index Índice Biótico Estendido - Instituto Oswaldo Cruz (IBE-IOC) for 1st to 4th order streams in the Serra dos Órgãos region, Rio de Janeiro State, Brazil. The aims were to evaluate the sensitivity of IBE-IOC, verifying its ability to assess anthropogenic impacts over the stream gradient and along the year; METHODS: The sensitivity of the index was evaluated according to the degree of interquartile overlap in Box-and-Whisker plots; RESULTS: The index is able to distinguish different types of environmental integrity and different impacts by deforestation and organic pollution; CONCLUSIONS: Our results supported the recommendation of IBE-IOC as a useful tool for water quality assessment of wadeable streams in this region.

Bibliographic Details

Main Authors:	Mugnai,Riccardo, Buss,Daniel Forsin, Oliveira,Renata Bley, Sanfins,Cristiane, Carvalho,Alcimar do Lago, Baptista,Darcilio Fernandes
Format:	Digital revista
Language:	English
Published:	Associação Brasileira de Limnologia 2011
Online Access:	http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2179-975X2011000100009
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