Distribution, status, and conservation of wild yak Bos grunniens

alpine grasslands animal salvaje animal sauvage botanical composition composition botanique conservation de la nature cyperaceae desert deserts desiertos diet dieta gramineas graminee grasses grazing grazing systems meadows nature conservation pastoreo praderas alpinas prados de siega prairie alpine prairie de fauche selective grazing sistemas de pastoreo stipa wild animals yack yak yaks