Fig. 2
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Average back-calculated length increments (mm, ± 1 SD, log-scale) of pikeperch in relation to age, in gillnets (black squares) and in trap nets (open circles). The lines indicate linear regression between length increments and age. Markers are shifted (–0.1 years for gillnets and +0.1 for trap nets) for comparison. Note the log-scale of the y-axis.
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