Definition of Niche: the full range of biotic and abiotic conditions under which an organism lives. Because of competition and limited resources, organisms with similar requirements tend to sort into slightly different niches. Concept of competitive exclusion - two species will not occupy exactly the same niche.
The concept of the ecological niche is very important one; it helps us to understand how organisms in an ecosystem interact with each other. The concept is described by Odum as follows:
"The ecological niche of an organism depends not only on where it lives but also on what it do…
