What indicators characterize the species diversity of the biocenosis? Show the dependence of biocenosis stability on these indicators.

The species diversity of the biocenosis can be characterized using two quantitative indicators: species richness and species richness. Species wealth – the total number of species that live in the biotope. The higher the species richness, the more stable the biocenosis, since each population has the opportunity to form more links and satisfy their environmental needs. This increases its survival, and hence the preservation of the biocenosis as a whole. Secondly, there is the possibility of the interchangeability of some species by others in the performance of their functions, so that the functional structure of the biocenosis is not disturbed. Species saturation – the number of species per unit area or unit volume of the biotope. Two biocenoses with the same species richness will not be equally stable if they live in biotopes of different sizes. A biocenosis with a smaller biotope area will be more stable. It will have a higher species richness, which means that the probability of formation of bonds between populations is higher and their strength is higher