Nella Dan: ADBEX III Cruise - Krill and zooplankton data

This dataset contains results from the Antarctic Division BIOMASS Experiment III (ADBEX III) cruise of the Nella Dan. It is the fifth cruise in a series of six, conducting a long term field survey providing data on distribution, abundance and population structure of the krill Euphausia superba in the Prydz Bay region, Antarctica. The prime purpose of ADBEX III was to study the ecology of the Crabeater Seal, and surveys of krill and other zooplankton were taken off Antarctica in the Australian sector (east of Mawson) in the Enderby Land region between October and November 1985. 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. A CTD cast and water collection for phytoplankton pigment, nutrients and primary production measurements were also made at each net sampling station. Summary results are listed in the documentation.

The fields in this dataset are:

species
Station Number
Haul Type
RMT
Biomass
Weight
Flowmeter
Latitude
Longitude
Time
Date
Ice
Sea State
Density
Sea Floor
Dive
Maturity

A minor data update was made on 2022-11-03 to add scanned copies of acoustic logs from the voyage.

本数据集收录自“内拉·丹号（Nella Dan）”执行的南极局生物质实验三期（Antarctic Division BIOMASS Experiment III，ADBEX III）航次的相关成果。该航次为共计6个航次的系列调查之第五次，旨在开展长期野外调查，获取南极普里兹湾区域南极磷虾（Euphausia superba）的分布、丰度及种群结构数据。ADBEX III的核心目标为研究食蟹海豹的生态学特征，1985年10月至11月期间，调查团队在澳大利亚南极管辖海域（莫森站以东）的恩德比地海域开展了磷虾及其他浮游动物调查，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、冷磷虾（Euphausia frigidia）、晶磷虾（Euphausia crystallorophias）及长额磷虾（Thysanoessa marcuria），同时也对翼足类与头足类进行了研究。每个网采采样站位均完成了CTD（温盐深仪）投放作业，并采集水样用于浮游植物色素、营养盐及初级生产力测定，相关汇总结果已整理于配套文档中。

本数据集包含以下字段：
物种
站位编号
拖网类型
RMT
生物量
重量
流量仪
纬度
经度
时间
日期
海冰状况
海况
密度
海底状况
潜次
成熟度

本数据集于2022年11月3日完成小幅更新，补充了本次航次声学测井记录的扫描副本。