Eufracio-Torres, A.E., Wehncke, E.V., Lopez-Medellin, X. and Maldonado-Almanza, B. 2016. Fifty years of environmental changes of the Amacuzac riparian ecosystem: a social perceptions and historical ecology approach. Ethnobiology and Conservation. 5, (Nov. 2016). DOI:https://doi.org/10.15451/ec2016-11-5.8-1-35.