International Journal of Ecology / 2014 / Article / Tab 1

Research Article

Biological Monitoring Using Macroinvertebrates as Bioindicators of Water Quality of Maroaga Stream in the Maroaga Cave System, Presidente Figueiredo, Amazon, Brazil

Table 1

BMWP classes, scores, categories, and result interpretation (adapted from Armitage et al., 1983 [30], and Alba-Tercedor, 1996 [29]).

ClassBWMP scoreCategoryInterpretation

I>150GoodVery clean water 
101–150Clean or not significantly altered
II61–100AcceptableClean but slightly impacted
III36–60QuestionableModerately impacted
IV15–35CriticalPolluted or impacted
V<15Very criticalHeavily polluted

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