Gutiérrez-Fonseca, P.E. and Ramírez, A. 2017. Ecological evaluation of streams in Puerto Rico: major threats and evaluation tools. HIDROBIOLÓGICA. 26, 3 (Apr. 2017), 433–441. DOI:https://doi.org/10.24275/uam/izt/dcbs/hidro/2016v26n3/Ramirez.