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CHAPTER 4 3 – 3.1 3
OTHER MACROINVERTEBRATE SAMPLING
METHODS FOR INVESTIGATIONS
The Standard RIVPACS sampling and analysis protocol,
described in Chapter 2, is recommended for most
monitoring purposes, including investigations, for a
number of reasons: it provides samples comparable with
those from most other surveys; its behaviour and errors
are understood and quantified; and it responds to almost
all environmental pressures.
However, there are times when other methods
are needed:
1 Where it is difficult to use RIVPACS methods
2 Where different habitats are to be investigated
3 Where quantitative analysis is needed
The methods described below provide alternatives to
complement or replace RIVPACS, for specialist aquatic
environments, or where additional information is required.
190 | Freshwater Biology and Ecology Handbook
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