Islands, Landscapes, Ecosystems, Analysis, Nonnative species, Arctic Regions, invasive species, Genetic research, Rodents, Dispersal, Mammals, Archaeology, Species, Bones, Prehistoric, Mitochondria, Deoxyribonucleic acid, DNA, Introduced species, Historical account, Plants (organisms), Colonization, Environments, Dispersion, zooarchaeology, Aquatic birds, Sp...