The technology and management of multi-species fisheries

Explaining noncompliance in the Norwegian coastal cod fishery: an application of the multinomial logit

“…The study shows that type of fishing gear plays a significant role in explaining differences in motives for non-compliance among coastal fishermen. Empirical studies by Squires (1987), Kirkley and Strand (1988) show that gear is crucial for determining production conditions and the ability to adjust to regulation. The present study show that catch technology also plays an important role in explaining differences in motives for infringing the regulations.…”

“…The relevance of using detailed knowledge of fishing gear as a baseline for fisheries regulation is emphasised (Squires, 1987;Kirkley and Strand, 1988;Dupont, 1991;Squires andKirkley, 1991, 1996;Jensen, 2002). The characteristics of particular fishing gears have implications for the infringement of regulations.…”

“…The characteristics of particular fishing gears have implications for the infringement of regulations. Gill net and trawl, for example, are often inappropriate for the selective harvesting of demersal species (Kirkley and Strand, 1988;Squires, 1996, 2002), and the technological ability to harvest selectively has implications for the ability to obey by-catch regulations. Obeying regulations may thus depend on the technological characteristics of the fishing technology employed.…”

Applications of Dual Theory in Fisheries: A Survey

“…This implies that inputs and outputs can be aggregated into theoretically consistent variables consisting of a single aggregated input and a single aggregated output. This implies that a quantity restriction on a single output will reduce the input and output at the aggregated level, but that the mix of single 3 In the studies of Kirkley and Strand (1988), Campbell andNicholl (1995), Thunberg, et al (1995), Squires and Kirkley (1991), and Diop and Kazmierczak (1996) fishing effort is measured through the use of a single composite input, thereby implicitly assuming that inputs are separable from outputs. In these applications, the test on input-output separability is therefore only addressing whether outputs are separable from the composite input.…”

“…The firm determines the demand for inputs, x, and supply of outputs, y, based on perceived input and output prices denoted respectively by w and p. The regularity properties imply that π(p, w) is nonnegative, nondecreasing in p, nonincreasing in w, positively and linearly homogeneous, convex and continuous (p, w). Kirkley and Strand (1988), Squires and Kirkley (1991), Campbell and Nicholl (1995), Diop and Kazmierczak (1996), and Thunberg, Bresnyan and Adams (1995) employ revenue maximizing behavior to describe the short-run multiproduct supply structure at given levels of inputs. In the short run, inputs are fixed and the firm maximizes the revenue function…”