Home – Home – Jornals – Contemporary Problems of Ecology 2021 number 6

The results of long-term studies of the collembolan population in the gradient of pollution of pine and spruce forests (middle taiga) in the zone of influence of pulp and paper industry (JSC Mondi SLPK, Komi Republic), the main pollutants of which are oxides of carbon, nitrogen, sulfur, hydrogen sulfide, mineral dust are given. The study was carried out in the period when the total amount of emissions was 20-30 thousand tons (2003, 2007-2009 years) and 10-15 years after their reduction by 2-3 times to 10 thousand tons (2018-2019 years). It was shown that after a decrease of emissions, the species richness of springtails significantly increases in the zones of strong and medium coniferous forests, but their number decreases in all zones, which may be associated with weather conditions. It was found that in pine forests, especially in the background plots, euedaphic species predominate, and the proportion of hemiedaphic and epiedaphic species increases in the zone of sting impact. At the same time, the spectrum of life forms, biotopic groups, the structure of the springtail population does not undergo significant changes over the course of 10 years. In spruce forests, on the contrary, differences were revealed in these parameters between years of research, which are expressed in a change in the dominance of species, their relative life forms and biotopic groups. The observed changes in the communities of springtails in spruce forests are apparently determined by changes in the ground cover. In general, there has been a significant improvement in the state of the collembola community of spruce forests in the zones of strong and medium imact from 2003 to 2019.