Before revision: Carl F. Jordan defines the term as: While this usage is not new, the idea of biological conservation has been applied to the principles of ecology, biogeography, anthropology, economy, and sociology to maintain biodiversity.
After revision: Carl F. Jordan defines biological conservation as: While this usage is not new, the idea of biological conservation has been applied to the principles of ecology, biogeography, anthropology, economy, and sociology to maintain biodiversity.