Survey : EHOLT/05/1951 (part of Historic Arctic Survey Series)

This survey was undertaken by Cefas as part of the Historic Arctic Survey
Series;

*Gadus morhua* (Atlantic Cod) stocks in the Barents Sea are currently at
levels not seen since the 1950s. Causes for the population increase last
century, and understanding of whether such large numbers will be maintained in
the future, are unclear. To explore this, we digitised and interrogated
historical cod catch and diet datasets from the Barents Sea. Data includes
temporal and spatial information, cod catch data and length distributions, and
hydrographic data.

Survey took place between 16/08/1951 and 18/09/1951 on Ernest Holt

Equipment used during this survey :

- Otter Trawl 78ft Granton Arctic bobbins BMV doors
- Otter Trawl 78ft Granton Arctic bobbins wooden otter boards

Survey operations were undertaken on 73 stations

19 different species were caught on this survey

本调查由英国渔业和食品局（Cefas）发起，作为历史北极考察系列的一部分；大西洋鲑鱼（ Gadus morhua，又称鳕鱼）在巴伦支海的种群数量目前处于自20世纪50年代以来未曾见过的水平。关于上百年种群数量增加的原因，以及是否能够维持如此庞大的种群规模的不确定性，目前尚无明确的理解。为探究此问题，我们对巴伦支海的鳕鱼捕捞和食性历史数据集进行了数字化处理和分析。数据涵盖了时间与空间信息、鳕鱼捕捞数据和长度分布，以及水文数据。该调查于1951年8月16日至9月18日在厄内斯特·霍尔特号（Ernest Holt）上进行；调查期间使用的设备包括：- 78英尺格兰顿北极渔网，配备BMV门和木质鳕鱼板。调查在73个站点进行，共捕获19种不同的物种。