Keystone species
Endangered species
1.
These are the species of lower abundance that play a vital role in maintaining the structure and organization of the community.
These are the species of lower abundance that may or may not have a vital role in sustaining the community.
2.
The species is not threatened.
The species is at a higher risk of extinction in the near future.
3.
Example: Tropical trees like Ficus.
Example: Red Panda