Forty-year study shows loss of invertebrates, with repercussions for larger animals

One of the longest-running studies of streams in the world – the minute study of 14 brooks that tumble through a remote Welsh mountain landscape – has exposed a troubling loss of riverine wildlife.

Ecologists working on the Llyn Brianne Observatory project in mid Wales, which has been in operation for almost 40 years, have flagged up the disappearance and decline of invertebrates from the streams.

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