highly significantp < 0.001
The fit between PFE and mean total annual catch for the arithmetic model was highly significant ( r 2 = 0.57; p < 0.001) with parameter values K = 2204 tonnes per 500 km 2 per year (95% CI [1451, 3629]) and b = 47.0 (95% CI [31.9, 67.0]; Fig 5B ).