A21 Communities

Question 1

Definition of a community

Answer 1

Consists of all the populations of organisms in a particular habitat.

Question 2

Definition of an ecosystem

Answer 2

Consists of a habitat and it’s associated community, including both biotic and abiotic components and interactions between them

Question 3

Definition of succession

Answer 3

Term used to describe progressive change in the species composition of a community over a period of time

Question 4

Definition of climax community

Answer 4

Climatic climax community is a relatively stable community at the end stage of succession in which the community composition is determined by aspects of the climate.

Question 5

Definition of zonation

Answer 5

Different communities are present at the same time, distributed as bands or zones along an environmental gradient

Question 6

Definition of an ecological niche

Answer 6

The functional position of an organism in its environment