The branch of science concerned with the interrelationship of organisms and their
ENVIRONMENT, especially as manifested by natural cycles and rhythms, community development
and structure, interactions between different kinds of organisms, geographic distributions,
and population alterations. (Webster's, 3d ed)
Note générale sur le champ d'application :
the discipline (education, history, etc) only; use ECOLOGICAL AND ENVIRONMENTAL PHENOMENA
or specifics treed under it for characteristics and processes of ecological and environmental
systems