this post was submitted on 15 Mar 2025
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UK Nature and Environment

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A lichen success story is being celebrated in an area of ancient rainforest in Cwm Gwaun thanks to the conservation efforts of the Pembrokeshire Coast National Park Authority.

Cwm Gwaun is one of the treasures of Pembrokeshire Coast National Park, renowned not only for its deep-rooted Welsh language and culture but also for its ancient Celtic rainforest. This unique landscape is home to five Sites of Special Scientific Interest (SSSIs), each nationally significant for its lichen-rich woodlands.

Lichens thrive in well-lit, humid environments with exceptionally clean air. However, in recent decades, these delicate ecosystems have declined due to changes in traditional woodland grazing practices and the impact of agriculture and industry on air quality.

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