Using model simulations to compare performance of two commercial salmon management strategies in Bristol Bay, Alaska

作者：Carney Justin M^*; Adkison Milo D

来源：Canadian Journal of Fisheries and Aquatic Sciences, 2014, 71(6): 814-823.

DOI：10.1139/cjfas-2013-0351

In this paper, we discuss the costs and benefits, in relation to economics and Alaska%26apos;s salmon management policies, associated with two management strategies on the Egegik and Togiak sockeye salmon (Oncorhynchus nerka) fisheries in Bristol Bay, Alaska. %26quot;Daily management%26quot; allows managers to open or close the fishery on a daily basis, whereas a fixed fishing schedule allows fishing, to the extent practical, on fixed days of the week. To compare the strategies, we simulated the effects of daily management and a fixed fishing schedule on the two fisheries. Our simulations show that a daily management strategy results in higher yearly catches, less yearly variation in escapement, and fewer years of escapement below the goal range. A fixed fishing schedule results in less yearly variation in catch and a more stable harvest rate, with the harvest stability more pronounced when effort was held constant. Daily management is a desirable strategy for fisheries that are managed for maximum sustainable yield, have high fishing effort, have a small fishing area, or have a more temporally compressed run. A fixed fishing schedule is a desirable strategy for fisheries with less intense effort, budgetary or efficiency concerns, or stock components that differ in run timing.

• 出版日期2014-6