EVERYDAY SCIENCE

Detailed explanation-1: -Competitive exclusion occurs when one species outcompetes another in a part of its habitat so well that the second species is excluded from that part.

Detailed explanation-2: -A species’ niche is basically its ecological role, which is defined by the set of conditions, resources, and interactions it needs (or can make use of). The competitive exclusion principle says that two species can’t coexist if they occupy exactly the same niche (competing for identical resources).

Detailed explanation-3: -Competition between two species for the same resources is called interspecific competition, which is when two or more species in a community are competing for resources. From this graph, we can see that above 4, 800 feet, species A is outcompeting species B, and below 4, 800 feet, species B is outcompeting species A.

Detailed explanation-4: -Niche overlap describes the situation in which co-occurring species share parts of their niche space with each other. High niche overlap may lead to conflictual interactions (such as competition and exclusion) for some species (Giménez Gómez et al.

Detailed explanation-5: -Another example of competitive exclusion is, the red squirrels replacing the grey squirrels in Britain. The number of red squirrels decreased because of the disappearance of hazelnuts, competitive exclusion, and diseases. Gray squirrels easily adapted to the environment and replaced the red squirrels gradually.