Ermine larger than adjacent mainland and with smaller sexual dimorphism (29%) compared with coastal forms (42-47%) or inland (52-57%). Difference arose in situ, doesnt reflect size of colonising stock. Reckons all species except caribou present since onset of last glaciation, because islands ice-free islands offered refuge for mainland species, so have had 100,000 yrs to evolve distinguishing characters. Haida people probably helped disperse some animals in canoes.
|Author||J. B. Foster|
|Secondary title||Occasional Papers of the British Columbia Provincial Museum|