수산해양기술연구(구 한국어업기술학회지) 56권 1호 (p.26-36)

|<연구 논문>|
트롤어업에서 어로기술개발에 따른 어획성능지수 변동

Change of relative fishing power index from technological development in the otter trawl fishery
키워드 :
Fishing power index,Trawl fishery,Fishing vessel,Fishing gear,Fishing equipment

목차

서 론
재료 및 방법
결과 및 고찰
   어선의 변화
   어구의 변화
   어로설비 및 항해계기의 변화
   어획성능지수의 변화
결 론
Reference

초록

Thousands of pelagic and demersal fishes inhabit the waters around Korea and many of them are overexploited. One of the reasons is technological development, which increases the efficiency of the vessels continuously. The analysis was conducted to identify the change of fishing power index to develop the vessel and gear technology that may have improved the fishing efficiency of the otter trawl fishery from 1960s to 2010s. Gross tonnage was decreased stably, but horse power was increased annually. The perimeter of net mouth was somewhat longer, but little changed. Color fish finder was utilized from the mid-1960s. Hydraulic net drum were introduced in the early 1990s, and supply rate was gradually increased. Surveys on the supply and upgrading of fishing equipment utilized visiting research. Therefore, the relative fishing power index in the trawl fishery increased about two to three times in the 2010s compared to the 1980s. The results are expected to contribute to reasonable fisheries stock management.