1958 - 1958 Centre for Environment, Fisheries & Aquaculture Science (Cefas) Survey : EHOLT/02A/1958 (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 07/03/1958 and 27/03/1958 on Ernest Holt Equipment used during this survey : - Otter Trawl 78ft Granton with shrimp netting cover Survey operations were undertaken on 20 stations 25 different species were caught on this survey本调查由Cefas作为《北极历史调查系列》（Historic Arctic Survey Series）的一部分开展； *Gadus morhua*（大西洋鳕鱼，Atlantic Cod）在巴伦支海的种群资源量当前已达到自1950年代以来未曾观测到的水平。上世纪该种群数量增长的原因，以及此类大规模种群能否在未来得以维持的相关认知仍不明晰。为探究该问题，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1958年3月7日至1958年3月27日在“欧内斯特·霍尔特号（Ernest Holt）”上实施。 本次调查使用的装备如下： - 78英尺格兰特敦型拖板拖网（Otter Trawl 78ft Granton），附带虾网防护罩 本次调查共完成20个站位的作业，共捕获25个不同物种。