Biology of the Mertz Glacier Polynya - Protist Data

Metadata record for data from ASAC Project 1101See the link below for public details on this project.---- Public Summary from Project ----Most of our knowledge of the Antarctic marine ecosystems comes from summer surveys. There are very few observations of this ecosystem in winter and there is a fundamental lack of knowledge of understanding of even basic questions such as 'what is there?' and 'what's it doing?'. The proposed visit to the sea ice zone in winter is a rare opportunity to conduct observations on phytoplankton, krill, birds, seals and whales, so that we can begin to understand the biological processes that go on in winter.Data for this project were intended to be collected on a 1998 winter voyage of the Aurora Australis, but a fire on board meant that the voyage had to return to port before work could be carried out.Data were then collected the following year during a 1999 winter voyage of the Aurora Australis (IDIOTS), which ran from July to September.Data attached to this metadata record, include protist, bacteria and virus data collected from the Mertz Glacier region.The purpose of this research was to quantify and identify the different assemblages of phytoplankton, change in virus populations and the number of live/dead bacteria between Tasmania and the polynya, within the polynya and sea ice. A variety of methods were used including HPLC, light and fluorescent microscopy and the collection of samples for subsequent analysis upon return to the Antarctic Division. More information is available in the download file.The samples were collected by Rick van den Enden.

本数据集的元数据记录来自ASAC 1101项目，以下链接可查阅该项目的公开详情。—— 项目公开摘要 ——目前学界对南极海洋生态系统的认知大多基于夏季科考调查，该生态系统的冬季观测数据极为匮乏，即便诸如“存在何种生物？”“它们在进行何种活动？”这类基础问题，我们也几乎一无所知。本次计划前往海冰区开展冬季观测，是针对浮游植物、磷虾、鸟类、海豹与鲸类进行研究的宝贵契机，借此我们得以初步阐明南极海洋生态系统的冬季生物过程。本项目原本计划于1998年冬季通过“南极光号”（Aurora Australis）航次收集数据，但船上发生火灾，导致航次被迫返航，未能开展相关工作。后续于次年，即1999年冬季，通过“南极光号”（Aurora Australis）的航次（代号IDIOTS）完成了数据收集，该航次执行时间为7月至9月。本元数据记录所附的数据，涵盖了从默茨冰川（Mertz Glacier）区域采集的原生生物、细菌与病毒样本数据。本研究旨在量化并鉴定塔斯马尼亚至冰间湖区域、冰间湖内部以及海冰区域内的各类浮游植物群落，同时分析病毒种群变化与活菌/死菌数量。本次研究采用了多种实验方法，包括高效液相色谱（High Performance Liquid Chromatography，HPLC）、光学显微镜与荧光显微镜观测，并采集样本以供返回南极科考机构后开展后续分析。更多详情可查阅下载文件。本次样本由里克·范登恩登（Rick van den Enden）采集。