Population ecology is a major sub-field of ecology that deals with the dynamics of species populations and how these populations interact with the environment. The older term, autecology (from Greek: αὐτο, auto, "self"; οίκος, oikos, "household"; and λόγος, logos, "knowledge") refers to the roughly same field of study, coming from the division of ecology into autecology—the study of individual… (More on Autecology)