RMT Trawl catch from the 1980/81 V5 FIBEX voyage

This dataset contains results from the First International BIOMASS Experiment (FIBEX) cruise of the Nella Dan. It is the first cruise in a series of six designed to assess the distribution and abundance of krill, Euphausia superba. The FIBEX was an international programme co-ordinating the activities of 12 ships from 11 nations in the Southern Atlantic and Indian Oceans. Australia was responsible for surveying an area of the southern Indian Ocean south of 60 degrees and between 60 degrees and 90 degrees east longitude. Surveys of krill and other zooplankton were taken off Antarctica in the Australian sector (Mawson to Davis region) and Prydz Bay in January and March 1981. Species identity and abundance data were obtained. The major species investigated were Euphausia superba, Euphausia frigidia, Euphausia crystallorophias and Thysanoessa marcuria. Other pteropods and cephalopods were also studied. Physical and chemical oceanography data and phytoplankton samples were also obtained, as well as results from hydroacoustic surveys of krill biomass.本数据集包含“内拉丹号”（Nella Dan）执行的首次国际生物量实验（First International BIOMASS Experiment，FIBEX）航次的相关结果。该航次是为评估南极磷虾（Euphausia superba）的分布与丰度而规划的6个系列航次中的首个航次。FIBEX是一项国际协作计划，协调来自11个国家的12艘科考船在南大西洋与印度洋开展作业。澳大利亚负责勘测南纬60°以南、东经60°至90°之间的南印度洋海域。1981年1月与3月，科研团队在澳大利亚南极辖区（莫森至戴维斯海域）及普里兹湾的南极近海海域开展了磷虾与其他浮游动物调查，获取了物种鉴定与丰度数据。本次调查的主要研究物种包括南极磷虾（Euphausia superba）、寒海磷虾（Euphausia frigidia）、冰磷虾（Euphausia crystallorophias）以及Thysanoessa marcuria，同时还对翼足类与头足类开展了研究。此外，本数据集还收录了物理海洋学与化学海洋学数据、浮游植物样本，以及磷虾生物量水声学调查的相关结果。