확장된 TAC평가 모델개발을 통한 한국형TAC연구(생물학적 상호작용 및 어업간 혼획을 중심으로)

Abstract

ABSTRACT

In order to overcome several limitations with the current Korean TAC assessment model, the study suggested several theoretical approaches with related to biological, technical, and economic interactions among multi-species and multi-gears. It necessarily consider ABC estimation considering biological or technical interactions that can take place among multi-species and multi-gears. In addition, the paper suggested basic structures of extended models and analysis methods of the other two models, a single species by multi-gears and multi-species and multi-gears. These two models used biomass dynamic models with related to surplus production and Fox models based on fishing ratio of individual fishing gear, and the empirical dynamic optimization model with biological sector and economic sector respectively. Basing on data such as economic parameters and biological parameters estimated by TACAMs. Also, the models can not only cut back on problems such as bycatch, discarding, and highgrading by adopting TAC to multi-species, but more accurately estimate the TAC level of each species. Another advantage of the models has not only a merit that can increase in total surplus of Korean fisheries industry, but also another merit that reduces biological loss of resource stock for multi-species. Finally, developmental suggestions from this study are as follows. First, before Korean government adds multi-species and multi-gears to the list of TAC species and fisheries, the government needs to accumulate biological and economic data with related to TACAM of multi-species and multi-gears, and also needs to set TAC of each species targeted of multi-species and multi-gears considering biological and technical interactions. secondly the government needs to review net profit of individual fishing gear based on MEY and MSY (or TAC) obtained from TACAMs for three types (multi-species and a single gear, a single species and multi-species and multi-species and multi-gears) provided from this study.