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The ECN protocol for freshwater macro-invertebrates (FIN)


Protocol file


Site types that use this protocol

Macro-invertebrates are a very diverse group of organisms with a wide range of environmental tolerances and preferences and are generally abundant in freshwater habitats. Communities are therefore likely to show both qualitative and quantitative responses to a full spectrum of possible environmental changes.  In most situations macro-invertebrates are also relatively easy to sample, qualitatively at least, and keys for the identification of most elements of the British fauna are readily available.

Species presence, abundance and deformities are determined 3 times per year at river and lake sites.


Our field activities


Now that autumn has arrived the ECN fieldwork calendar begins to quieten down. We cease monitoring most terrestrial invertebrates apart from spiders. In rivers and lakes we make the last freshwater invertebrate survey of the year.

See all this month's field measurements...

Wytham in the autumn (fall). Photo: Denise Pallett