Biber können Bäche in Kohlenstoffspeicher verwandeln und so Feuchtgebiete schaffen, die achtmal mehr organischen Kohlenstoff speichern als nahegelegene Waldböden.
https://theconversation.com/beavers-can-turn-streams-into-carbon-stores-we-measured-how-much-278489
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From *The Conversation:*
>When a dam slows the water, sediments begin to settle. These sediments carry organic material such as leaves, soil and plant fragments that contain carbon. Instead of washing away downstream, the material becomes buried in wetland soils.
>Beaver dams also raise water levels and can flood existing vegetation. Some trees die and fall into the water, adding large amounts of dead wood that slowly stores carbon over long periods.
>Meanwhile, a new succession of wetland plants and algae growing in the wetland absorb carbon from the atmosphere.
>Over time, the wetland becomes a natural storage system. Sediment, wood and vegetation build up layer by layer. This locks carbon into the landscape and eventually fills the wetland.
>In the wetland we studied, sediments contained up to eight times more organic carbon than nearby forest soils.
Peer-reviewed paper is open access:
Hallberg, L., Larsen, A., Ceperley, N. et al. Beavers can convert stream corridors to persistent carbon sinks. *Commun Earth Environ* 7, 227 (2026).
https://doi.org/10.1038/s43247-026-03283-8