Arroyo J., C. and Encalada, A.C. 2009. Evaluation of the quality of water through benthic macroinvertebrates and biological indices in tropical rivers in montane cloud forest. ACI Avances en Ciencias e Ingenierías. 1, 1 (Apr. 2009). DOI:https://doi.org/10.18272/aci.v1i1.4.