Conservation diversity of vascular plants and their communities in situ, applying the conception of ecosystem pool Impact of substrate acidity and heavy metals (Cu, Cd) on pea plants growth and pollen germination Toxicity of road maintenance salts to rainbow trout Oncorhynchus mykiss Principal relationships among epiphytic communities on common oak (Quercus robur L.) trunks in Lithuania Pollution of the water of Lithuanian rivers with nitrogen and phosphorus compounds in different periods of anthropogenic activities Qualitative and quantitative parameters of phytocenoses in Lithuanian lakes of different trophic state Evidence and molecular analysis of Rickettsia helvetica and novel α-proteobacterium from the tick Ixodes ricinus in Poland Investigation of organic matter status as an important indicator of anthropogenic impact for the estimation of Terric Histosol quality Biodegradation of substrates used for soil erosion prevention Herbaceous plants as a renewable source of bioenergy