1956 - 1956 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Survey : EHOLT/03/1956 (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 23/03/1956 and 24/04/1956 on Ernest Holt Equipment used during this survey : - Otter Trawl 78ft Granton Arctic bobbins wooden otter boards Survey operations were undertaken on 4 stations 12 different species were caught on this survey本调查由环境、渔业与水产养殖科学中心（Cefas）作为北极历史调查系列的一部分开展。 巴伦支海的大西洋鳕（*Gadus morhua*，Atlantic Cod）当前种群规模达到了自20世纪50年代以来的历史峰值。上个世纪该种群数量增长的原因，以及未来能否维持如此庞大的种群规模，目前尚无明确结论。为探究上述问题，研究团队对巴伦支海的历史鳕鱼捕捞与摄食数据集进行了数字化处理与解析。数据集涵盖时空信息、鳕鱼捕捞数据、体长分布数据以及水文数据。 本次调查于1956年3月23日至1956年4月24日在“欧内斯特·霍尔特号”（Ernest Holt）科考船上开展。 本次调查使用的设备如下： - 78英尺格兰顿北极型沉子木质拖网曳板（Otter Trawl） 本次调查共完成4个测站的作业，共捕获12个不同物种。