The DARES and DALES projects build
upon existing methods for using diatoms to monitor river and lake
although some modifications are needed in order to ensure
compatibility with the requirements of the Water Framework
Current UK methods are
described in the TDI Userís Manual (Revised Edition)
Environment Agency R&D Dissemination Centre) and are
underpinned by two European standards:
EN 13946:2003 (Water quality Ė
Guidance Standard for the routine sampling and pre-treatment of
benthic diatom samples from rivers).
EN 14407:2004 (Water quality
Ė Guidance Standard for the identification, enumeration and
interpretation of benthic diatom samples from running waters).
Sample record forms
Protocols for the DARES and DALES projects are described in Adobe acrobat (pdf) files that can be downloaded
below. They based on relevant chapters in the TDI
Userís Manual and chapter numbering remains unchanged so that they
can be easily compiled into a DARES / DALES Userís Manual at the end of
Three PowerPoint presentations have been developed as part of the
DARES and DALES projects to train staff in diatom sampling methods. You
can either view the presentations
online as web pages, or download them as Powerpoint files (without
videos) or zipped archives of Powerpoint demonstrations with video
clips. If you want to use these you will need to allow about 20
minutes per presentation.
The video sequences were
filmed in October 2003 in the Rivers Avon and Wylye (Hampshire,
UK) by Tim Colborn (University of Bristol). Text is by Martyn
Kelly and Marian Yallop.