David George Campbell (born January 28, 1949, in Decatur, Illinois, United States) is an American educator, ecologist, environmentalist, and award-winning author of non-fiction.
From 1974-1977, Campbell was the executive Director of the Bahamas National Trust,[1] the organization responsible for parks, reserves, and setting priorities for wildlife conservation in the Bahamian Archipelago.
30% of the blue crabs (Callinectes sapidus) in Chincoteague Bay, VA. His research showed that the disease is spread by cannibalism, mediated by ambient temperature and salinity.
[3] In 1974, Campbell was a botanical explorer at the Instituto Nacional de Pesquisas da Amazônia (INPA)[4] in Manaus, Brazil, from where he staged expeditions to study the ethnobotany of the Jamamaji and Paumari Native Americans.
[19] In 2010 Campbell extrapolated this controversial hypothesis to Amazonia, presenting evidence that pre-Columbian Native Americans caused a large-scale extinction of botanical diversity before the Europeans arrived.