Disentangling Effects of Policy Reform and Environmental Changes in the Norwegian Coastal Fishery for Cod
构建了挪威沿海鳕鱼渔业的生物经济模型，分离环境变化影响后，发现1989/1990年政策改革对生物量影响小但显著提升了利润，主要来自生产率和成本节约。
We construct a detailed bioeconomic model of the Norwegian coastal cod fishery. This fishery has been open access up to the policy change during the “cod crisis” of 1989/1990. To answer to what extent the subsequent increase in biomass and profits was due to improved management, we isolate the effect of environmental variability. Projecting stock and harvest forward in the counterfactual scenario of no intervention, we show that the policy had a small positive impact on biomass, but a pronounced positive effect on profits. The main drivers of profit gains are increases in productivity and savings in fuel and labor costs. <i></i>