Question

What is a group of organisms of different species living together in a particular place is called?

Answer 1

Biome*

Explanation:

If by "particular place" you mean a specific type of environment, e.g. tundra or tropical rainforest, then the term you are looking for is biome.* If you mean a specific location, e.g. Kaho'olawe, then that term does not apply.