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Ozone levels are decreasing, but exposure of forests remains high

Forests in Europe still suffer from excessively high ozone levels. The good news is that ozone concentrations are declining slowly but steadily.

Cycles and importance of the larch budmoth

The grey larch budmoth is a small moth that reproduces in masses in a regular cycle of eight to ten years. Its caterpillars feed on larch needles, which causes larch forests to turn reddish brown during a mass outbreak.

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