The branch of biology that deals with the relationships between living organisms and their environment. Also: the relationships themselves, esp…

That branch of science which treats of the development and behaviour of a living creature as affected by its environment.

With singular or plural agreement. The ecology of a particular species of organism. Cf. ecology, n. 1a.

the study of the interrelationship between humans and their environment; spec. (a) Sociology = ecology, n. 1b; (b) study of or concern about the…

The study of the ecology of an individual plant or species, opposed to synecology, n.

The study of the relationships between the environment and a community of organisms occupying it (see community, n. 7). Also: the relationships…

The ecology of organisms and their interactions with each other; the branch of science concerned with this.

The study of variation and genetic differences within a (plant) species in relation to the environment.

(the science or study of) the interactions among the members of a species, and between them and their environment; an instance of this.

The study of the ecological effects of radioactive materials and ionizing radiation.

a radical environmental philosophy and movement which regards human life as merely one of many equal components of the global ecosystem, and…