Carla Restrepo,^* Lawrence R. Walker,^** Aaron B. Shiels,^*** Rainer Bussmann,^**** Lieven Claessens,^***** Simey Fisch,^****** Pablo Lozano,^******* Girish Negi,^******** Leonardo Paolini,^********* Germán Poveda,^********** Carlos Ramos-Scharrón,^* Michael Richter,^*********** Eduardo Velázquez<sup>**


*</sup>Carla Restrepo (crestre@hpcf.upr.edu) is an associate professor, and Carlos Ramos-Scharrón is a postdoctoral researcher, in the Department of Biology, University of Puerto Rico, Río Piedras, San Juan.
^**Lawrence R. Walker is a professor, and Eduardo Velázquez is a researcher at the Universidad de Alcalá in Spain.
^***Aaron B. Shiels is a doctoral student in the Department of Botany, University of Hawai'i at Manoa, Honolulu.
^****Rainer Bussmann is director and curator of the William L. Brown Center for Plant Genetic Resources at the Missouri Botanical Garden in St. Louis.
^*****Lieven Claessens is an environmental scientist with the International Potato Center in Nairobi, Kenya, and an assistant professor with the Land Dynamics Group at Wageningen University in the Netherlands.
^******Simey Fisch is an assistant professor in the Departamento de Biologia at the Universidade de Taubaté in Brazil.
^*******Pablo Lozano is a doctoral student at the Institute of Botany and Botanical Garden, Hohenheim University, Stuttgart, Germany.
^********Girish Negi is a scientist in Forest Ecology with the G. B. Pant Institute of Himalayan Environment and Development, Uttarakland, India.
^*********Leonardo Paolini is a postdoctoral researcher at the Laboratorio de Investigaciones Ecológicas de las Yungas, Yerba Buena, Tucumán, Argentina.
^**********Germán Poveda is aprofesor in the Escuela de Geociencias y del Ambiente at the Universidad Nacional de Colombia in Medellín.
^***********Michael Richter is a professor at the Institut für Geographie, Friedrich-Alexander Universität Erlangen-Nürnberg, Germany.