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A spatial method to calculate small-scale fisheries effort in data poor scenarios

Fig 5

Relationship between Predicted Fishing Effort (# of boats per 500 km2) and mean total annual catch.

In logarithmic form (A) and arithmetic form (B). Points represent raw data (one value per 500 km2 grid cell), solid lines are the fitted non-linear models, the dashed lines are the 95% prediction intervals of the fit, and the outer dotted lines show one standard deviation for the regression residuals. Note the funnel-shaped errors: as PFE increases so does dispersion in the data.

Fig 5