Pilipko Е. N. RussiaInstitution of Higher Professional Education 'Vologda State Dairy Farming Academy named after N. V. Vereshchagin', Shmidta, 2, Vologda, Molochnoe, Russia, 160555Karlovna@ukr.net Author's articles The Analysis of Phytophagous Mammals Trophic Activity in Different Biocenoses