Search for: [Abstract = "An analysis was made of certain regularities found in the formation of the biomass of the bottom fauna in a group of Masurian lakes. The biomass of the lakes examined varies within limits of 0.2 to 37.0 g\/ 1 m2, not exceeding 6 g\/1 m2 in the majority of the lakes. It was found that lakes of the pond type possess a greater biomass than eutrophic lakes. The positive correlation of the biomass with primary productivity, and the negative correlation with the mean size and depth of the lakes were shown. In some cases, however, certain deviations were observed from the above mentioned regularities."]