Evaluacion ambiental de los servicios hidro-ambientales en el bosque de niebla (la cascada de La Granada) en el municipio de Coatepec: A recreational value of “La Granada” waterfall in the municipality of Coatepec using the travel cost method

Environmental externalities are just one class of externalities (or external effects). They are not more important than any other type of economic externality, but it would not be possible to find rational arguments to justify that they are less so. If more complex and therefore better decisions are to be taken, these externalities should be duly quantified and incorporated in the framework of a cost-benefit analysis of public or private decisions of society. In that case, they can be accounted for as costs of our decisions. Economic valuation requires different methods to include ecosystems dynamics. The present case is an analysis for hydro-environmental services of the cloud forest of Coatepec due to the increasing risk caused by human activity and how the analysis between contingent valuation, hedonic prices and travel cost may help to formulate public politics. Therefore, a Poisson regression model will be applied to know the percentage of the consumer willingness to pay.