1950 - 1950 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Survey : EHOLT/04/1950 (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 21/04/1950 and 11/05/1950 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 24 stations 14 different species were caught on this survey本调查由英国环境、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鱼（Atlantic Cod，学名*Gadus morhua*）种群目前处于20世纪50年代以来的罕见高位。上个世纪该种群数量增长的动因，以及此类大规模种群能否在未来得以维持的相关认知，目前仍不明确。 为探究该问题，我们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分析。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1950年4月21日至1950年5月11日在“欧内斯特·霍尔特号”（Ernest Holt）科考船上实施。 本次调查使用的设备如下： - 78英尺格兰特北极型网板拖网（Otter Trawl 78ft Granton Arctic bobbins）配BMV型拖网板 - 78英尺格兰特北极型网板拖网（Otter Trawl 78ft Granton Arctic bobbins）配木质拖网板 本次调查共完成24个站位的作业。 本次调查共捕获14个不同物种。