Aquatic macroinvertebrates are used to assess a range of aquatic habitats and environmental pressures. Aquatic macroinvertebrates are monitored to assess the effects of pollution on water quality. They can be used to identify diffuse and point source pollution including sewage treatment works and agricultural runoff. Once sources of pollution are identified, pollution control and prevention schemes can be put in place and macroinvertebrates used to monitor improvements.
Sampling - Blueroof can deploy a wide range of sampling techniques to best suit each site including Standard 3-minute kick sampling and 1-minute hand search, as well as deep water sweep and substrate sampling.
Identification - Macroinvertebrate identification takes place in Blueroof's laboratory and can be completed to specified taxonomic levels. Standard sampling involves family level identification.
Analysis -The family and species lists can then be analysed using standard suites of indices. For flowing waters these include BMWP, ASPT and LIFE. In ponds and canals, PYSM and NPS can be used to assess the ecological quality.