Freshwater Diatom Flora of Britain and Ireland is a major project aiming to compile a web-based diatom flora and comprehensive taxonomic review of diatoms from freshwater, brackish and subaerial habitats in the British Isles. The project involves much original research on problematic groups, and description of new species.

Approximately 2800 species of freshwater diatoms have been recorded from Britain and Ireland. This website is a work in progress and only a small proportion of taxa have been added so far. Please also use our colleagues’ publications for your identifications.

In memory of Luc Ector

Our friend and colleague Luc passed away too soon. He was an inspiration to us all.

Sampling Sites

Specimens reviewed were collected over a range of habitats across the United Kingdom and Ireland.

River Arrow, England
Loch Quoich, Scotland
River Irfon, Wales
Loch Inagh, Ireland

Website Citation

This website should be cited as:

Jüttner I., Carter C., Cox E.J., Ector L., Jones V., Kelly M.G., Kennedy B., Mann D.G., Turner J. A., Van de Vijver B., Wetzel C.E., Williams D.M. Freshwater Diatom Flora of Britain and Ireland. Amgueddfa Cymru - National Museum Wales. Available online at https://naturalhistory.museumwales.ac.uk/diatoms.
[ Accessed:  ].


This website is currently at a developmental stage and is by no means complete. Content on this website has not yet been fully verified.

Queries, suggestions and offers are welcome at the address given on the Contact Us page.


This website including all data and images is protected by copyright belonging to Amgueddfa Cymru - National Museum Wales unless otherwise stated. Neither text nor images can be downloaded for anything other than personal use without the written permission of the Museum.