Hello. You have not informed the biome to which this question refers, which makes it impossible for this question to be answered. However, I will try to help you as best I can.
A biome is an environment composed of a set of animals and plants that live under the same geological and climatic conditions and undergo the same landscape formation processes. There are many different biomes in the world and each one is completely different from each other.
In general, the resources that a biome presents to the living beings that make it up depend on the availability of sun, availability of rain and soil quality. Biomes with an abundance of these elements, such as tropical forests, for example, have many resources available to the living beings that live in them. However, biomes that have unavailability of one or more of these elements, such as the Brazilian Caatinga, for example, have few resources available to living beings and, therefore, have a lower diversity.