# Loved it

**Berglemming / Fjällämmel / Norway Lemming**

Information about this species.

This species is an important part of the ecosystems in Västerbotten.

## FAQs

- **What triggers the extreme population cycles of the Norway lemming?**: Lemming cycles (every 3-5 years) are driven by complex trophic cascades and climatic factors. A well-formed subnivean space (cavities beneath the snow) protects them from cold and predators, allowing for winter reproduction. Overpopulation eventually depletes their food resources (mosses, grasses), leading to a population crash alongside high predation.
- **How is climate change impacting lemming cycles in the Scandes?**: Climate change severely disrupts lemming cycles. Warmer winters with rain-on-snow events cause ground icing, leading to the collapse of the subnivean habitat. This blocks access to food, prevents winter reproduction, and threatens the survival of specialized predators relying on lemmings.


## Weitere Informationen

- Illustration: Lemmus lemmus
- Nature, Taiga & Waters of Västerbotten
- Native to Northern Sweden