Gillnet catch per unit effort (CPUE) of vendace, densely-rakered (DR) whitefish and sparsely-rakered (SR) whitefish from 1991 to 2010.

<p>A and B: CPUE by number of fish per 100 m² gill net area. C and D: CPUE by weight, g fish per 100 m² gill net area. Lines in A and C show species-specific CPUE averaged over the littoral, pelagic and profundal zones (weighted by 1, 1, and 0.5, respectively), whereas B and D show the cumulative CPUE for the averages in A and C, respectively.