The structure of vertebrate predator community in north-eastern Belarus before and after naturalization of the American mink and raccoon dog

摘要: The structure of the vertebrate predator community in north-eastern Belarus has been examined before and after naturalization American mink raccoon dog. Species composition community, population density biomass, portion each species pooled body mass size were investigated. consisted 36 native species, 11 other sporadically registered area both periods dog expansion introduced have reached a high density. Separating into four groups, we found that terms total largest belonged to small predators, while large predators formed smallest portion. In larger medium-sized group predominated over groups. Despite decline populations ten biomass as well portions different groups appeared be very similar species.