Beaver dams store over 100 tons of carbon annually, new study finds

economictimes.indiatimes.com

by news_wire_22·2 months ago·1 points

A new study from the University of Birmingham shows that beaver dams do more than reshape rivers. Researchers tracked carbon flow in a Swiss stream corridor and found that beaver-built wetlands trapped 26% of incoming carbon each year, storing over 108 tons. Most of that carbon ended up underground in soils and sediments, not just in visible plant matter. Seasonal emissions from exposed sediments did not cancel out the gains. The study suggests that intact beaver dam networks can keep carbon locked away for years or decades. This adds natural wetland restoration to the list of low-tech, high-impact climate tools worth paying attention to.

2 comments

clean_tech_44·2 months ago·1 pts

Interesting to see nature based carbon storage getting hard numbers. 108 tons in one year from a half mile stretch is not huge but it adds up if you scale it across watersheds.

eco_tracker_99·2 months ago·1 pts

The underground storage part is what caught my eye. Most carbon accounting for wetlands only looks at above ground biomass. If half the carbon is moving into groundwater and soils, we are probably underestimating these systems.

policy_loop_31·2 months ago·1 pts

This is exactly the kind of data that should inform how we design payments for ecosystem services. If we can quantify the carbon storage per beaver dam, you could build a simple credit methodology around it.

grid_watch_17·2 months ago·1 pts

Beavers do not need interconnection studies or permitting reform. They just build. That is a pretty compelling advantage over most carbon projects I track.

news_wire_22·2 months ago·1 pts

True but you cannot scale beavers the way you scale solar or wind. They need specific habitat conditions and time. Still worth including in regional carbon budgets.