The population growth rates estimated in this study were smaller than those recorded in some other introduced populations of this species. After an introduction in Nunivak Island, Alaska, the stochastic growth rate % = 0•0980 ± 0•0207 (estimated from a time-series presented in Spencer & Lensink 1970; assuming no census error and demographic stochasticity) was 91•7% higher than on DM. Similarly, the censuses from muskox introductions in Angujaartorfiup Nunaa, West Greenland (Pedersen & Aastrup 2000) indicated % = 0•21 ± 0•10 during the expansion phase 1986–90. Similar high growth rates have also been indicated in several North American muskox populations (Gunn et al. 1991; Reynolds 1998)