2.5a (i) Niche Flashcards
1
Q
Ecological niche definition
A
An ecological niche is a multi dimensional summary of tolerances and requirements of a species.
2
Q
Niche definition
A
The niche of an organism is the functional role that it plays within an ecosystem.
3
Q
Fundamental niche
A
A species has a fundamental niche that it occupies in the absence of any interspecific competition.
4
Q
Realised niche
A
A realised niche is occupied in response to interspecific competition.
5
Q
Competitive exclusion
A
As a result of interspecific competition, competitive exclusion can occur, where the niches of two species are so similar that one declines to local extinction.
6
Q
Resource partitioning
A
Where the realised niches are sufficiently different, potential competitors can co-exist by resource partitioning.
