11. Species of this genus typically parasitise marmots and ground squirrels of holarctic distribution. 12. Scientists have generally considered it, too, to be a single Holarctic species. 13. Arvicolinae are Holarctic in distribution and represent one of only a few major hibernate. 14. One major such effort in the Holarctic is the Yellowstone to Yukon Conservation Initiative. 15. The Holarctic species " Rhodiola rosea " is used in herbal medicine. 16. The tribe is mainly native to the Holarctic . 17. It is widely distributed in the Holarctic region. 18. Many are holarctic , but a few species are neotropical or occur in eastern Asia. 19. The evolutionary lineages of the 14 marmot species distributed across the Holarctic are relatively ambiguous. 20. It has a Holarctic distribution, occurring from Scandinavia to north-western North America.
