Freshwater Macroinvertebrates

Freshwater macroinvertebrates are key indicators of waterbody health; used to assess a range of aquatic habitats and the environmental pressures acting upon them. As key components of Water Framework Directive (WFD) and other compliance assessments, RiverWood Ecology provides accurate data essential to any project requiring such classifications.


RiverWood Ecology can carry-out a range of freshwater macroinvertebrate survey methods and techniques including kick, Surber, dredge and PSYM, in addition to on-site bankside assessments where required for pollution investigations. Our experience covers all habitats from ponds to upland streams, from Scotland to Dorset. We can therefore provide a tailor-made approach to freshwater sampling.


RiverWood Ecology Ltd. has more than 10 years’ taxonomic experience and are familiar with species from a range of UK habitats; from upland to lowland. We can identify samples to Family Level (TL1) and Species/Mixed Taxon Level (TL5). We ensure we are fully up-to-date with current nomenclature and presence of Invasive Non-Native Species (INNS).

We always work under stringent Quality Control systems, to ensure the data provided is accurate and scientifically robust.


Whether it’s a standard or bespoke report you require, all include Whalley-Hawkes-Paisley-Trigg (WHPT)/ASPT, WHPT/NTaxa, CCI, LIFE and PSI indices data as standard. Where applicable to assessments, Lincoln Quality Index (LQI) (for the Anglian Region) and Acid Waters Community Index (AWIC) data can be calculated.

Assigning waterbody classifications and analysing expected versus observed indices scores is an integral part of WFD assessments. RiverWood Ecology Ltd. provides River Invertebrate Classification Tool (RICT) analysis, through our RICT Reporting service.

  • Family & Species Level Identification.
  • WHPT/ NTaxa/ ASPT.
  • CCI/ LIFE/ PSI Indices as Standard.
  • RICT Assessments.
  • Quality Controlled Analysis.
  • WFD and Regulator Standard Methods