1991 - 1996 Centre for Environment, Fisheries & Aquaculture Science (Cefas) North Sea Groundfish Survey, Qtr 4 (FSS: IBTS4E)

Approximately 70 core trawl stations are completed annually to provide distribution and stock composition estimates for fish species. Station, catch, length (all species) and biological data (selected species) are collected using research vessels and GOV trawls. Benthic catches are also recorded. The surveys are carried out in support of EU data regulations and as part of the Internation Bottom Trawl survey. Additional aims include collection of water temperature, salinity and litter data.每年完成约70个核心拖网站位，以获取鱼类物种的分布及种群组成评估数据。研究团队采用科研调查船与GOV拖网，采集站位信息、渔获数据、所有物种的体长数据，以及选定物种的生物学数据，同时记录底栖渔获。本调查旨在符合欧盟数据法规要求，同时作为国际底拖网调查（International Bottom Trawl Survey）的一部分开展。此外，本次调查还附带采集水温、盐度及海洋垃圾数据。