Identity, composition and abundance of protists - data collected from the BROKE-West voyage of the Aurora Australis, 2006

The BROKE-West survey was conducted from 30 degrees E and 80 degrees E between January and March 2006. It consisted of 1 east-west transect at the northernmost limit of the survey between 60 degrees S and 62 degrees S between the 10 and 19 of January, followed by 11 meridional transects separated by 5 degrees of longitude and extending from approximately 62 degrees S to the Antarctic continental shelf between the 19 January and 3 March.

This dataset details research undertaken to determine the identity, composition and abundance of protists in the survey area.

Some explanations for terms used in the dataset are as follows:

1. Group is the taxonomic Phylum, Class and occasionally Order to which the taxa belongs. The abbreviations are:
a. Diatom - Diatomophyceae/Bacillariophyceae. These are subdivided into the taxonomic Orders Centrales (centric) and Pennales (pennate)
b. Chryso - Chrysophyceae
c. Dino - Dinophyceae
d. Eugleno - Euglenophyceae
e. Hapto - Haptophyceae
f. Prasino - Prasinophyceae
g. Silico - Dictyochales (silicoflagellates)
h. Choano - Craspedophyceae /Choanoflagellida
i. Ciliate - Phylum Ciliophora
j. Tintinnid - Phylum Ciliophora , Order Spirotrichea, Class Tintinnida
k. Protozoa - refers to grouped rare taxa belonging to a number of Classes

2. Autotroph/Heterotroph refers to the trophic status of the taxa, indicating whether they are autotrophic (plant) or heterotrophic (animal).

3. CTD Station Number refers to the station at which samples were collected. Type indicates whether the samples were collected at the surface "surf" or at the point at which there was maximum chlorophyll fluorescence detected from the CTD flurometer trace "ChlMax".

The data are all cell concentration numbers.

For more information, see the other metadata records related to ASAC project 40 (ASAC_40), ASAC project 2655 (ASAC_2655) and ASAC project 2679 (ASAC_2679).

BROKE-West调查于2006年1月至3月期间，在东经30°至东经80°的海域开展。该调查包含1条东西向断面，布设于调查区域最北端南纬60°至南纬62°之间，作业时间为1月10日至1月19日；随后于1月19日至3月3日期间，布设了11条间隔5个经度的经向断面，这些断面大致从南纬62°延伸至南极大陆架海域。

本数据集详细记载了为明确调查区域内原生生物（Protists）的种类组成、群落结构与丰度所开展的相关研究。

本数据集涉及的部分术语说明如下：
1. 类群（Group）：指该分类单元（taxa）所属的分类阶元门、纲，部分类群为目。其缩写含义如下：
a. 硅藻（Diatom）：对应硅藻纲（Diatomophyceae/Bacillariophyceae），可进一步分为中心硅藻目（Centrales，辐射硅藻）和羽纹硅藻目（Pennales，羽纹硅藻）；
b. 金藻（Chryso）：对应金藻纲（Chrysophyceae）；
c. 甲藻（Dino）：对应甲藻纲（Dinophyceae）；
d. 裸藻（Eugleno）：对应裸藻纲（Euglenophyceae）；
e. 定鞭藻（Hapto）：对应定鞭藻纲（Haptophyceae）；
f. 普林藻（Prasino）：对应普林藻纲（Prasinophyceae）；
g. 硅鞭藻（Silico）：对应硅鞭金藻目（Dictyochales，硅鞭藻）；
h. 领鞭虫（Choano）：对应领鞭虫纲（Craspedophyceae / Choanoflagellida）；
i. 纤毛虫（Ciliate）：对应纤毛门（Ciliophora）；
j. 铃纤虫（Tintinnid）：隶属于纤毛门（Ciliophora）、旋毛纲（Spirotrichea）、铃纤虫纲（Tintinnida）；
k. 原生动物（Protozoa）：指归为一类的多个纲的稀有分类单元。
2. 自养/异养（Autotroph/Heterotroph）：指该分类单元的营养类型，用以区分其为自养型（类似植物）或异养型（类似动物）。
3. CTD站位编号（CTD Station Number）：指样品采集的站位。样品类型（Type）用于说明样品采集于表层（标注为"surf"），或是通过CTD荧光计测得的叶绿素荧光最大值深度处（标注为"ChlMax"）。

本数据集所有数据均为细胞浓度数值。

如需更多信息，请查阅与ASAC项目40（ASAC_40）、ASAC项目2655（ASAC_2655）及ASAC项目2679（ASAC_2679）相关的其他元数据记录。