Distribution and morphological features of the antarctic species of CALANUS and The euphausiid fauna of the antarctic and notal regions; 22 February 1955 to 17 June 1958 (NODC Accession 0000922)

This data contains abundance, length, and life history data of four species of Calanus copepods. The data is a compilation of 3 cruises of the MV OB carried out by the Soviet Antarctic Expedition during the IGY (1955-1958). The surveys paid close attention to obtaining complete data on the populations and distribution of the adult stages of Copepoda. Two types of plankton nets were used; Juday net with mesh size No. 38 and the K100 net with mesh size No. 9 in the cylindrical part, No. 15 in the upper part and No. 23 or 38 in the lower part of the net. This paper also includes excellent cruise and Calanus abundance maps as well as extensive station information.

This data is a summary of three cruises of the MV OB by the Soviet Antarctic Expedition. The article summarizes the distribution of euphausiid species and includes maps of their distribution based on collections of the OB and published data. The euphausiids were mainly sampled with a K100 net: 100 cm diameter, cylindrical part with No. 9 mesh, conical part with No. 15 mesh in the upper part and No. 23 or 38 in the lower part. A few other samples were taken with a Nansen net(50 cm diameter, cylindrical part No. 15 mesh, conical part No. 23 mesh), a Juday plankton net, a Bogorev-Rass net, or a ring-trawl. Most of the samples were taken by oblique hauls.

本数据集包含4种哲水蚤属（Calanus）桡足类（Copepoda）的丰度、体长及生活史数据。该数据集汇编自苏联南极考察队在国际地球物理年（IGY，1955-1958年）期间执行的3次OB号机动科考船（MV OB）航次。本次调查重点关注获取桡足类成体种群与分布的完整数据，共使用两类浮游生物采样网：网目尺寸为38号的裘迪网（Juday net），以及K100型网——其圆筒部网目为9号，上部网目为15号，下部网目为23号或38号。本数据集还附带高质量的航次与哲水蚤丰度分布图，以及详尽的测站信息。
本数据集为苏联南极考察队执行的3次OB号机动科考船航次的汇总资料。本文总结了磷虾类（euphausiid）物种的分布情况，并基于OB号科考船的采集样本与已发表文献数据绘制了其分布地图。磷虾类样本主要通过K100型网采集：该网直径100cm，圆筒部网目为9号，上部锥形部网目为15号，下部锥形部网目为23号或38号。其余少量样本分别采用南森网（Nansen net，直径50cm，圆筒部网目15号、锥形部网目23号）、裘迪浮游生物网、Bogorev-Rass网或环形拖网采集。绝大多数样本采用斜拖法采集。