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Podcast

Riverfly Sampling with Richard Adeney

On-the-spot learning about river canaries (invertebrates)

Richard Adeney in the river with a net, kick sampling

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We join Richard on his monthly visit to River Tone in Runnington to learn how riverfly kick sampling works. For three minutes, Richard kicks up the mud/gravel/stones of the river and catches the creatures that float free in his net, then we count and identify them. Like pond dipping, it’s great fun, but somewhat fiendish because most of the minibeasts are, well, tiny! (especially in the winter) It’s also important, because riverflies are the ‘canaries in the coalmine’ of river health.

The sampling kit - a net, bucket, ID sorter and counter
Close up of the idenitifcation tool, a circualr container with pictures on the bottom

There has been a severe drop in numbers of riverflies in our polluted riverscapes since the 60s. We meet Richard in a lovely, rural bit of river, and find quite a lot to marvel at, including larvae of Caddis, Mayflies, Olives, Stone Clingers and Damselfly.

Learn a bit about their lifecycle, and enjoy this peaceful live-action episode, starring River Tone on a mild damp September day. More info here: https://www.riverflies.org/

Mayfly larva
Stone clingers