TY - JOUR N2 - The paper deals with the structural variability and generative reproduction of Saxifraga oppositifolia populations in eight localities situated in Western Spitsbergen. The localities differed in terms of humidity, soil fertility, microclimate and frequency of disturbances. The population structure, the growth and development rate of individuals in the sea terrace and at the peat-bog prove that a dense plant cover influences positively the development of S. oppositifolia. The size of individuals, their biomass and population density is limited in most of the studied localities. Solifluction is the factor influencing the development of a population to the greatest extent. Of all the researched populations the weakest development was observed in the active structural grounds. Yearly changes in the structure of the populations as well as the yearly growth of the species studied are limited. The longevity, the development rate and size of the seedling recruitment are subject to modifications caused by the solifluction. L1 - http://www.czasopisma.pan.pl/Content/111070/PDF-MASTER/1993-4_355-382.pdf L2 - http://www.czasopisma.pan.pl/Content/111070 PY - 1993 IS - No 4 EP - 382 KW - Arctic KW - Spitsbergen KW - Saxifraga oppositifolia KW - population structure A1 - Pirożnikow, Ewa PB - Polish Academy of Sciences PB - Committee on Polar Research VL - vol. 14 DA - 1993 T1 - Populations of Saxifraga oppositifolia L., in Spitsbergen tundra in different ecological conditions SP - 355 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/111070 T2 - Polish Polar Research ER -