[The effect of female reindeers winter pasture on weight and survival in calf]

biosensores biosensors body condition control remoto depredadores domestication encuestas females femelle grazing hembra jeune animal losses mortalidad mortalite mortality noruega norway pastizales pastoreo pastures perte peso poids predation predators reindeer remote control renne reno saison seasons supervivencia surveys survie survival weight young animals