“…Economic theory suggests that resource rent in open access fisheries has a tendency to dissipate and that fisheries operate at a level at which profits correspond to profits that could be earned in other activities (Copes, 1972). Producer surplus, also known as infra-marginal rent, is generated due, e.g., to the fixed cost and heterogeneity of capital and labor (Flaaten, Heen, and Salvanes, 1995). Producer surplus is the sum of the differences between the price received for a good and the price at which individual firms are willing to sell the good.…”