1. Instituto de Investigaciones en Ecosistemas y Sustentabilidad Universidad Nacional Autónoma de México Antigua Carretera a Pátzcuaro No. 8701, Col. Ex Hacienda de Sán José de la Huerta Morelia 58190 Michoacán México
2. Department of Plant and Environmental Sciences Faculty of Science University of Copenhagen Thorvaldsensvej 40 Frederiksberg Denmark
3. DTU Environmental Engineering Air, Land & Water Resources Technical University of Denmark Building 115 DK – 2800 Kgs. Lyngby Denmark