It's the predator.
The role an organism plays in an ecosystem is its niche.
A niche can be a very small part of the ecosystem. The ecosystem in general is everything combined.
Niche or Ecological Niche
yeah
Scavenger
its niche
Fundamental Niche
Tiger cubs don't have a niche. A niche is a role in the ecosystem, and tiger cubs don't fill any role in the ecosystem until they become independent. Adult tigers fill the niche of apex predator.
Niche
a role
Niche
Yes. ALL animals and plants have a niche in THEIR ecosystems.