Berger and his colleagues found greater yak densities near glaciers, which often support adjacent food-rich alpine meadow habitats. Less than one percent of the yaks observed showed color variation, a good indication that hybridization with their more colorful domestic yak cousins is less frequent here than in more peopled regions on the Tibetan Plateau.
Very little is known about wild yak biology, including how often they reproduce, infant mortality rates, and the role wolves may play on population dynamics.
The team's next steps will be to process data to understand more about climate change impacts on this high elevation ecosystem, and to unravel more about human-wildlife conflict in this fragile and little-known part of the world.
Joe Walston WCS Executive Director of Asia Programs, said: "For millennia, yaks have sustained human life in this part of Asia, it would be a cruel irony if their reward is extinction in the wild. Thankfully, we have a chance now to secure their future and give back a little of what they have provided us."
| Contact: Stephen Sautner ssautner@wcs.org 718-220-3682 Wildlife Conservation Society Source:Eurekalert |