Antarctic Diatom Database (based on 115 surface samples)

All the available data sets containing diatom counts were compiled. These data sets were the 166 database used by Pichon et al. (1992), new data gathered separately by Dr Pichon (1994) and the author (L. Armand-1997), and Abbott's (1973) southeast Indian Ocean surface sample data set. \n\nSince each of the data sets were developed over periods of years or were subject to differences in processing and taxonomy, primary analysis was concerned with aligning current taxonomic advances and knowledge against the record of species identified in each data. With exception only to the Abbott southeast Indian Ocean data set (which could no longer be located for verification), the remaining data sets were combined and subjected to taxonomic reform. \n\nFollowing taxonomic reform a core-top diatom database was compiled using sample-selection criteria and through the removal of samples representing unique environmental regimes (i.e. Antarctic Peninsula region). A total of 115 samples from an original 194 remained available for use, and is identified as the Antarctic Diatom Database (ADB).

本研究汇编了所有可获取的含硅藻计数的数据集。所纳入的数据集包括：Pichon等（1992年）所用的166份数据库、Pichon博士（1994年）单独采集的新数据、本文作者L. Armand（1997年）收集的新数据，以及Abbott（1973年）的东南印度洋表层样本数据集。

由于各数据集均历经多年构建，且在处理流程与分类学标准上存在差异，本研究的首要分析工作为将当前分类学领域的进展与共识，与各数据集内已鉴定的物种记录进行比对统一。仅Abbott的东南印度洋数据集因无法获取以开展验证，未纳入整合流程；其余数据集均被合并，并实施了分类学修正。

完成分类学修正后，本研究通过设定样本筛选标准，并剔除代表独特环境类型（如南极半岛区域）的样本，汇编得到岩芯表层硅藻数据库。初始的194份样本中最终留存115份可供使用，该数据库被命名为南极硅藻数据库（Antarctic Diatom Database，ADB）。