Interannual Variability of Fisheries Economic Returns and Energy Ratios Is Mostly Explained by Gear Type
Figure 4
Economic returns (A), energy ratios (B), interannual coefficient of variation of economic returns and energy ratios, and variance ratios by fleet as a function of the number of functional groups exploited (C) and the number of species exploited (D).
Variance ratio is interannual variance of mean vessel sales divided by the sum of interannual variances of species/functional group vessel sales for a given fleet.