* Competition: The two species will compete for the same limited resources, such as food, water, shelter, or mates.
* Exclusion: The species that is better adapted to the niche will outcompete the other, leading to the less adapted species being excluded from the niche. This can happen through a number of mechanisms:
* Outcompeting for resources: The stronger competitor might consume more resources, leaving less for the other species.
* Displacing the other species: The stronger competitor might directly displace the weaker competitor from its preferred habitat or breeding sites.
* Driving the other species extinct: In extreme cases, the competition can be so intense that the weaker species is driven to extinction locally.
Important Considerations:
* Resource partitioning: In some cases, the two species might evolve to use slightly different resources within the niche, thus reducing competition. This is called resource partitioning. For example, two bird species might eat the same types of insects but forage in different parts of the tree.
* Character displacement: Species might evolve to have different physical or behavioral traits to reduce competition. This is called character displacement. For example, two species of finches might evolve to have different beak sizes to specialize in eating different types of seeds.
* Ecological Release: If one species is removed from the niche, the other species might expand its use of resources and become more successful. This is called ecological release.
In summary: Competition for the same niche can lead to one species excluding the other, but there are also ways that species can coexist through resource partitioning and character displacement.
