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CHAPTER 5 3.1.27 3.1.27 Simple observational methods for river wardens
Because the main river invertebrate indicators of pollution are so readily identified by non-specialists, it is easy for non-specialists
to use them with sufficient accuracy to be useful for alerting that a water body may be polluted. Several simple tools have been
devised to help train river wardens and environment officers who are not trained ecologists. Figure 5.11 is a recent example,
devised by the Environment Agency to help field staff to recognise pollution.
Similar schemes have also been developed for educational purposes.
Biological assessment following a pollution incident
Figure 5.11
Simple guide to recognising pollution for non-specialist field staff, from the Environment Agency (2017) (118)
254 | Freshwater Biology and Ecology Handbook
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