TAC assessment for single species and multiple gear fisheries with an application to the Korean hairtail fishery

Jong-Oh Nam^*, Jeong-Gon Ryu^**, John M. Gates^***, Jung-Sam Lee^**

^*Corresponding Author: Fisheries Outlook Center, Korea Maritime Institute, 1652, Sangamdong Mapogu Seoul, 121-270, Korea E-mail: namjo1234@hanmail.net Telephone: 82-2-2105-4935 Fax: 82-2-2105-4939

^**Fisheries Policy Research Department, Korea Maritime Institute, 1652, Sangamdong Mapogu Seoul, 121-270, Korea

^***Department of Environmental and Natural Resource Economics, University of Rhode Island, 1 Greenhouse Road, Kingston, RI 02881, USA

© Copyright 2021 Korea Maritime Institute. This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Published Online: Jun 30, 2009

ABSTRACT

This paper describes a Total Allowable Catch assessment model for a single species and multiple gear types as an improvement on TAC assessment based on a single species and a single gear type. A case study is included for a hairtail species caught mainly by the Korean pair trawl and large otter trawl gears. We use a surplus production model based on the exponential growth model to estimate biological reference points. Fishing effort for the two gears is standardized and used in a general linear model. The Fox bioeconomic model is then used to estimate economic reference points. In the Korean hairtail fishery, the TAC assessment model for a single species and multiple gear types yielded values for each reference point that were more conservative.

Keywords: TAC assessment system; general linear model; standardized fishing effort; maximum sustainable yield; maximum economic yield; net revenue of ABC