[Livestock grazing in the mountains. Vegetation types and grazing value]

botanical composition bovin browse plants cattle composition botanique encuestas ganado bovino grasslands grazing herbage highlands marginal land noruega norway nutritive value ovin ovinos pastizales pastoreo pastures plantas de ramoneo plante d'abroutissement praderas reindeer renne reno sheep surveys terre marginale tierras marginales valeur nutritive valor nutritivo vegetation