Jura. The Jura forest, "a colossus with feet of clay," which must face multiple aggressors

In the high forests of the Risoux forest in the Haut-Jura, the common spruce trees, stripped bare by the spruce bark beetle, blacken the landscape. "These died last year," explains Frank Vaufrey, scanning the canopy.

A specialist technician for the ONF and observer correspondent for the Department of Forest Health (DSF), he makes a clear observation: "In twenty years of my career, I have never seen so much damage from bark beetles."

"Since the start of the crisis in 2018, 20 to 25% of the coniferous area (fir and spruce) in the Jura massif has been affected by bark beetles and/or harvested," says Mathieu Mirabel, regional manager of the DSF. The...

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