Ordination of fresh-water communities on the basis of fuzzy sets analysis

Theres considered the use of fuzzy logic and the method of fuzzy sets ordination (FSO) for the analysis of influence of environmental factors on taxonomic structure of ecological communities. Therere given the results of multidimensional projection of benthos habitats on longitudinal gradient of the river Sok. The given examples illustrate merits and demerits of FSO method in comparison with traditionally applied canonical correlation analysis CCA.