Variation of carbon and metal concentration in soil amended with sewage sludge Effects of hydrogel application on growth of seedlings on unproductive forest areas The effect of climate change on the productivity of agrocenoses Non-breeding concentrations of the tufted duck (Aythya fuligula) in Lithuania The structure of juvenile fish communities in the lower reaches of the Nemunas River Noise studies and reduction possibilities in a residential area located by a highway Dangerous microbical pollution in workplace settings Effect of long-term industrial pollution on soil microorganisms in deciduous forests situated along a pollution gradient next to a fertilizer factory: 1. Abundance of bacteria, actinomycetes and fungi Research on suitability of anaerobically treated green waste and sewage sludge mixtures with meat waste for soil fertilization Investigation of the Jerubaičiai landfill leachate Biological diversity research and ecological education in Lithuania (The 80th anniversary of Prof. Dr. Habil. Elena Šapokienė) Leonardas Kairiūkštis has turned 80