We are experts in the taxonomy and analysis of diatoms from all freshwater and brackish water habitats (Battarbee et al. 2001) and can provide summary metric data, such as TDI scores, as required. Our diatomists are registered by the Environment Agency and take part in UK-wide ring tests to assure taxonomic quality. Developmental projects have included work with other UK diatomists in the UK to produce an interactive CD-ROM to identify freshwater diatoms (Kelly et al. 2005), a study of sampling methods for littoral diatoms (King et al. 2006) and an assessment of the ecological status of lakes in the UK using diatoms (Bennion et al. 2014). We have also carried out many projects for the different environment agencies in the UK and for the Danish Ministry of Environment using diatoms to assess river water quality in streams and rivers under the EU Water Framework Directive.


Battarbee, R.W., Jones, V.J., Flower, R.J., Cameron, N.G., Bennion, H., Carvalho, L. & Juggins, S. (2001). Diatoms. In J.P. Smol, H.J.B. Birks & W.M. Last (eds), Tracking Environmental Change Using Lake Sediments. Volume 3: Terrestrial, Algal, and Siliceous Indicators. Kluwer Academic Publishers, Dordrecht, The Netherlands, pp. 155-202.

Kelly, M.G., Bennion, H., Cox, E.J., Goldsmith, B., Jamieson, J., Juggins, S., Mann, D.G. & Telford,R.J. (2005). An interactive CD-ROM for identifying freshwater diatoms. Environment Agency, Bristol. Online Version

King, L., Clarke, G., Bennion, H., Kelly, M. & Yallop, M. (2006) Recommendations for sampling littoral diatoms in lakes for ecological status assessments: a literature review. Journal of Applied Phycology, 18, 15-25. doi:10.1007/s10811-005-9009-3

Bennion, H., Kelly, M., Juggins, S., Yallop, M., Burgess, A., Jamieson, J. & Krokowski, J. (2014) Assessment of ecological status in UK lakes using diatoms. Freshwater Science 33, 639-654. doi:10.1086/675447

Caloneis sp
Cocconeis sp