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)
The fertility decline is everywhere in the world today. Moreover, the decline goes decades back in the histories of rich countries. Birthrates have been below replacement in the U.S. and Europe since
