Characteristic of productivity components of European cranberry in swamp communities of middle taiga

Data on morphological and biological parameters of productivity, coenotic association of Oxycoccus palustris Pers. in natural populations of middle taiga subzone of Kirov region, are presented. High level of variability of yielding components both within the studied populations and between them, is revealed. All coenopopulations of O. рalustris are characterised by low generativity (less than 30%) and pollen-ovule coefficients (less than 50%). During the investigation of biological productivity factors in natural populations of O. palustris we have defined that individuals in mesotrophic cotton-grass - sphagnum swamps present the highest productivity indices.