우리나라 남해안 죽방렴 어업의 생태계 기반 준정량적 평가

Abstract

This study aimed to assess the status of the Jukbangryum fishery in the south coast of Korea. The target species of the Jukbangryum fishery was anchovy. The assessment was carried out based on the semi-quantitative approach of the ecosystem-based fisheries assessment (EBFA), which used questionnaires data. The procedure of the approach applied was the screening of questionnaires, selection of reliable indicators including IUU fishing, estimation of risk scores, and estimation of two risk indices. In the analysis ten(55.5%) of indicators fell in the desirable green zone, five(27.8%) in the yellow zone, and three(16.7%) in the undesirable red zone out of a total of 18 indicators for assessing four management objectives. The risk score for the indication of IUU fishing was estimated at 0.11. Three indicators which were in the undesirable red zone were ‘length at first capture,’ ‘employment rate’ and ‘cultural consideration’. The ORI values were estimated at 1.4, 0.2, 0.1 and 1.7 for sustainability, biodiversity, habitat quality and socio-economic status, respectively. The species risk index(SRI) was estimated to be 0.94, which was adjusted by the penalty of the IUU fishing. Management measures were suggested to change the uncertain situation of the indicators in the yellow zone to improve the status of the Jukbangryum fishery and the ecosystem, on the basis of the precautionary approach. First, the Jukbangryum fishery should be closed from April to May to protect not only fry and juvenile anchovy for avoiding growth overfishing, but also adult spawning anchovy for avoiding recruitment overfishing. Second, the regular assessment system of the Jukbangryum fishery should be established for monitoring the status of the fishery and their ecosystem.