Schiavo, B.N. de V., Hentz, Ângela M.K., Corte, A.P.D. and Sanquetta, C.R. 2016. Characterization of the environmental fragility of a urban river basin in the municipality of Santa Maria – RS. Revista Eletrônica em Gestão, Educação e Tecnologia Ambiental. 20, 1 (Feb. 2016), 464–474. DOI:https://doi.org/10.5902/2236117019981.