Changes in the fishing grounds for four drag-bagnet fisheries (large trawl, large pair trawl, large Danish seine and middle Danish seine) were investigated by year and sea-blocks in Korean waters. We used catch and effort data by sea-block (latitude × longitude: 30´ × 30´) of the National Institute of Fisheries Science (NIFS) and yearly fishing production statistics of the Korean statistic information service from 2008 to 2014. The main benthic habitat of fishing ground was sand and sandy mud material. The average swept areas for the four fisheries were 181.7 km2, 606.4 km2, 2,720.9 km2 and 252.8 km2, respectively. The main fishing ground was around Jeju Island and the eastern South Sea. The main fishing ground moved to the northern part of the South Sea during the study period due to a closure of fishing grounds and changes in the target species.

서 론
재료 및 방법
    분석방법
결 과
    어업별 어획량 및 투망면적
    저질분포
    어업별 어장
    어업별 주요 어장의 변화
고 찰
결 론
References

• Robert A. McConnaughey(미국 알라스카수산연구소)
• Steven S. Intelmann(미국 알라스카수산연구소)
• 최정화(국립수산과학원 제주수산연구소) | Jung Hwa CHOI (Jeju Fisheries Research Institute, National Institute of Fisheries Science) Corresponding author