Аннотация:The book represents proceedings of Sixth International Symposium “Invasion of Alien Spe-
cies in Holarctic. Borok -VI” (11 Oct. – 15 Oct. 2021, Borok – Uglich, Russia). The wide spectrum of
problems related to appearance and spread of invasive plants and animals is discussed. The book may
be interested for specialists in many fields, such as limnologists, hydrobiologists, ecologists, botanists,
zoologists, geographers, managers of dealing with nature preservation and fisheries.