Hairy ant experiment to make forest more resistant

A general view of Ennerdale Water. Some rocks are in the foreground of the lake with green fells on the other side of the water.
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Forestry England is moving hairy wood ants nests to Ennerdale

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An experiment to make woodland more resilient has seen hairy wood ant nests relocated across forests.

Forestry England moved six colonies with thousands of ants from Cropton Forest in North Yorkshire to Ennerdale in Cumbria, in a bid to bring back lost wildlife species and support ecosystems.

Rachel Gardner, from Forestry England said the project in the Lake District would help "rebuild complex forest communities" that can better deal with extreme weather, climate change and diseases.

The organisation said hairy wood ants' nests, which are mounded and can be up to 6.5ft (2m) high, are ideal habitats for over 100 species including beetles, hoverflies, mites, woodlice and other ants.

"[Hairy wood ants] can reduce plant damage by keeping herbivorous pests away," a spokesman explained.

"However, other herbivores, with adapted ant-defences, can thrive."

A closeup of the hairy wood ants on the ground in a forest. The ants do not appear hairy, they are just small black ants.Image source, Forestry England/Crown
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Hairy wood ants nests are ideal habitats for lots of creatures

This is the second phase of the project, with nests already relocated earlier this year using a different method, and early signs suggest they had been "unaffected by the journey".

Hayley Dauben, Forestry England's species reintroduction officer who is leading the project, said they would closely monitor how the colonies establish themselves and any differences between the two methods.

"The next crucial milestone will be in April 2026 as the ants emerge from their period of winter hibernation," she added.

A close-up image of a hairy wood ant's nest. It appears to be a mount of dried sticks and leaves with some ants crawling on it.Image source, Forestry England/Crown
Image caption,

Hairy ants' nests can be up to 6.5ft high

Forestry England has worked on the project with the University of York.

From September, the organisations will collaborate to support a PhD to help study the wider impacts of the project at Ennerdale.

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