What factors increase the species richness of a community?

The diversity of living organisms is determined by both climatic and historical factors. In areas with a mild, stable climate, with abundant and regular precipitation, without severe frost and seasonal temperature fluctuations, species richness is higher than in areas located in harsh climates, such as, for example, tundra or high mountains.
Species richness grows as the community evolves. The longer the development of the ecosystem, the richer its species composition. In such an ancient lake as Lake Baikal, for example, 300 species of amphibians alone live.

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