The EcoTrends project was established in 2004 by Dr. Debra Peters (Jornada Basin LTER, USDA-ARS Jornada Experimental Range) and Dr. Ariel Lugo (Luquillo LTER, USDA-FS Luquillo Experimental Forest)
Demographic values crosswalked from zcta to zip codes, with missing values replaced by a moving average model for each ZCTA. Data was available for the year 2000, and from 2011-2016. All other years
