THE EFFECT OF SELECTIVE HERBICIDES ON TEMPORAL POPULATION-PATTERNS IN AN OLD PERENNIAL GRASSLAND COMMUNITY

Different types of species response to herbicides and several "dynamic" categories of the species are discussed according to changes in their relative cover between 1979-1987. On the basis of different temporal population patterns and the differences in species behaviour in the intact and the treated plots, the interference relationships among the species were also identified. The study of the response of particular populations to disturbance and the recovery patterns of populations over time also contributed to understanding of community stability. Differences in the response of species to different disturbances indicated some of the important factors affecting resistance and resilience behaviour of the community and provided information on the mechanisms of regeneration.