Computer method of biocenotic zoning

Algorithm of dividing a territory or a water area into homogeneous areas is described. This area has its own group of communities, similar to each other in terms of species structure. Quantitative statistical indicator, describing quality of such zoning, is proposed. Three examples are given: tree communities in the reserve, nekton in the Sea of Okhotsk and taxocenes of insect larvae in the forest river. Difficulties in the process and interpretation of zoning results, recipes and ideas to solve these problems are discussed.