**Acknowledgements**

The author wishes to acknowledge the support and encouragement of Susana Asensio, Director of the Department of Urban Construction; Brady Greene, regional director for Vida Joven Guatemala; Rosario Burgos, Environmental Coordinator; Antonio Peña, Director of Nurseries; Lazaro Zamora, Director of the Central Wholesale Market (CENMA); and Kevin Gervais. In particular, this research effort could not have been possible without the hard work and commitment by eight outstanding graduate students from the University of Massachusetts; they are: Travis Shultz, Dan Shaw, Tamzeena Hutchinson, Adam Monroy, Brian Giggey, Seth Morrow, Megan Regan, and Jason Dell'Orfano.
