Table 9. Economic effects of harmful algal blooms occurrence.

Environmental constraints Optimum case Case 1 Case 2 Case 3 Case 4
Harmful algal bloom occurrence/year 30 days 45 days 75 days 120 days 165 days
Mean annual individual profits (€) 16,425 15,723 14,319 12,214 10,108
Extra cost/farm (€) 0 702 2106 4211 6317
Profit reduction 0% 4% 13% 25% 38%