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Epithilic Diatoms

The ECN protocol for diatoms on submerged stones (FDT)
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FDT

Protocol file

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Diatoms are a diverse group of unicellular algae and are well-established as sensitive biological indicators of surface water quality due to the narrow tolerance of individual species to environmental parameters such as pH and nutrient availability.  Diatoms grow attached to submerged stones within certain zones of lakes and streams and are easy to sample in most freshwaters in a replicable manner.  The sampling procedure adopted by ECN is simple and follows that used for the United Kingdom Acid Waters Monitoring Network .

May

Our field activities

MAY

During May we continue with most of the ECN measurements, and as the weather warms up, we start preparing for the additional measurements to be made over the summer.

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Sampling in a frog pool, Snowdon. Photo © CCW
[Photo © CCW]