Fisheries classification

The last tab contains information taken from the Fisheries Classification Scheme (FCS2). FCS2 predicts, for most fisheries survey sites 3 indices:

The predictions and the actual number of fish caught are displayed as bar charts.  The bars on the two charts displaying FCS2 probabilities will change colour according to the probability levels from blue (0-33%) to yellow (33% to 66%) and red (66%-100%).

In the example below, the expected number of fish caught at reference condition exactly matches the number of species caught at the last survey.   The overall EQR is very close to one and the EQR class is 'High' indicating High quality status.

All fish species that have a high probability of being caught at reference conditions (see red bars on the right-hand chart) were caught during electro-fishing (left-hand side chart) most of the time in numbers greater than predicted by FCS2 (middle chart).  For example, roach were found in high numbers (106 individuals) and according to FCS2 predictions there is a 85% chance of finding roach at the site at reference conditions and a 41% chance of finding more fish than observed.  The number of roach caught is therefore likely to be in line with what can be expected at reference condition.