More snow overall might keep the ground from freezing as hard, which will allow the permafrost to thaw more easily during the summer. This also has consequences for herbivores such as lemmings and reindeers. For lemmings a good snow layer in winter is important. They live under the snow, creating tunnels which they use to find food. For reindeers it is important how well the snow carries them. Wet and heavy snow is not good, as they have a hard time moving and as well removing the snow to get to lichens on the ground.