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.本数据集收录了“内拉丹号”（Nella Dan）执行的首次国际生物量实验（First International BIOMASS Experiment，缩写FIBEX）科考航次的全部成果。该航次是旨在评估南极磷虾（Euphausia superba）分布与丰度的6组系列科考航次的首航次。FIBEX作为一项国际性协同计划，协调了来自11个国家的12艘科考船在南大西洋与印度洋海域开展科考活动。澳大利亚负责勘测南纬60°以南、东经60°至90°范围内的南印度洋海域。1981年1月与3月，科考团队在澳大利亚管辖的南极近海海域（莫森站至戴维斯站区域）及普里兹湾完成了磷虾与其他浮游动物的勘测工作，并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）、冰磷虾（Euphausia frigidia）、晶磷虾（Euphausia crystallorophias）以及马库雷糠虾（Thysanoessa marcuria），同时还对其他翼足类与头足类动物开展了相关研究。此外，本航次还获取了物理海洋学与化学海洋学数据、浮游植物样本，以及针对磷虾生物量的水声勘测成果。