This report explains the background and process to formulate a fish reference Frequency of Occurrence (FROC) database.
Purpose of the Reference FROC :
To provide consistent reference Frequency of Occurrence for more than 700 fish sites in South Africa.
In what context to use the data :
- the Fish Response Assessment Index (FRAI)
- procedures that require a reference fish assemblage, for example extrapolation from known sites to unknown sites.
NOTE: We strongly recommend that users participate in training courses and contact the authors of this document when using the database.
Fish reference Frequency of Occurrence report:
C J Kleynhans, Resource Quality Services,
Department of Water Affairs & Forestry, Pretoria;
M D Louw,
Water for Africa, Pretoria;
J Moolman, Resource Quality Services,
Department of Water Affairs & Forestry, Pretoria.
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