IMOS - Phytoplankton Abundance and Biovolume (CPR)

This dataset includes Continuous Plankton Recorder (CPR) data, as part of the Australian Plankton Survey (AusCPR) and phytoplankton from the Southern Ocean Continuous Plankton Recorder Survey (SO-CPR). The dataset comprises the phytoplankton abundance, biovolume measurements and phytoplankton colour index (PCI). To understand how CPR plankton data is analysed and how to use CPR data we recommend reading Richardson et al., 2006. The data are made available in binned products for ease of use. As taxonomy changes over time and the ability of analysts improves with training more and more species can be identified over time. The products account for these changes and for real absences from the samples. A 0 abundance means that the species was looked for and not seen, null (empty cell) means that the species was not looked for in that sample. The products are therefore applicable for use in time series analysis. There are a total of 9 products to choose from. Phytoplankton data are available as either abundance or biovolume, and each of these at 4 levels of binning: - Raw product (includes all data) - Species product (includes all data where species have been identified) - Genus product (includes all data binned to genus level) - Higher taxonomic group (includes all data binned to functional groups).(each of these products includes the phytoplankton colour index (PCI) per samples)PlusDerived indices (useful indices at segment level for CPR data)The PCI is an estimate of the amount of chlorophyl in the water. The colour of the silk is measured using Pantone colour charts against a numeric scale indicating increasing greenness or chlorophyll. 0 – No colour 1 – Very Pale Green 2 – Pale Green 3 – Green Plankton abundances were originally provided on the AODN Portal only as raw data, in flat table form (with each species recorded in a separate row), without any adjustments for taxonomy changes or real absences. The first version of the "analysis-ready" products were first published on 21/12/2018. However, they were removed again in April 2021 because technical issues prevented them from being regularly updated.This dataset supersedes the previous "IMOS - AusCPR: Phytoplankton Abundance" - https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/c1344979-f701-0916-e044-00144f7bc0f4 and "IMOS - AusCPR: Phytoplankton Colour Index (PCI)" - https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/e210cb45-910a-79c2-e043-08114f8c7800 (both collections were removed from the AODN Portal in March 2022, and the data has been archived).

本数据集包含连续浮游生物记录仪（Continuous Plankton Recorder, CPR）数据，该数据隶属于澳大利亚浮游生物调查（Australian Plankton Survey, AusCPR）项目，以及南大洋连续浮游生物记录仪调查（Southern Ocean Continuous Plankton Recorder Survey, SO-CPR）获取的浮游植物数据。
数据集涵盖浮游植物丰度、生物体积测量数据以及浮游植物颜色指数（phytoplankton colour index, PCI）。若需了解CPR浮游生物数据的分析方法与使用方式，建议参阅Richardson等人2006年的研究成果。
为便于使用，本数据集以分箱产品形式发布。随着分类学研究的演进，以及分析人员经培训后鉴定能力的不断提升，可被精准鉴定的物种数量逐年递增。本系列产品充分考量了上述变化，同时兼顾样本中真实缺失的物种。其中，丰度值为0代表该物种在对应样本中完成检索但未被观测到，空值（null）则代表该物种未在对应样本中开展检索。因此，本系列产品适用于时间序列分析。
本数据集共包含9款可供选择的产品。浮游植物数据可按丰度或生物体积两种形式提供，且每种形式均支持4种分箱级别：
- 原始产品（涵盖全部数据）
- 物种级产品（仅包含已完成物种鉴定的全部数据）
- 属级产品（包含被归为属水平的全部数据）
- 高级分类群产品（包含被归为功能群的全部数据）。
上述每类产品均包含每个样本对应的浮游植物颜色指数（PCI）。
此外，还包含衍生指数（适用于CPR数据的分段级有用指数）
浮游植物颜色指数（PCI）是对水体中叶绿素含量的估算。采样时通过潘通色卡（Pantone colour charts）对照显示绿度/叶绿素含量递增的数值刻度对滤丝颜色进行测量：
0 – 无颜色
1 – 极浅绿
2 – 浅绿
3 – 绿色
最初，澳大利亚海洋数据门户（Australian Ocean Data Network Portal, AODN Portal）仅以原始数据（即每个物种单独占一行的扁平表格形式）提供浮游植物丰度数据，未针对分类学修订或样本真实缺失物种进行任何校正。首款“分析就绪”的产品版本于2018年12月21日首次发布，但因技术问题无法实现定期更新，于2021年4月下线。
本数据集替代了此前的“IMOS - AusCPR: 浮游植物丰度”数据集——https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/c1344979-f701-0916-e044-00144f7bc0f4，以及“IMOS - AusCPR: 浮游植物颜色指数（PCI）”数据集——https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/e210cb45-910a-79c2-e043-08114f8c7800。上述两个数据集均于2022年3月从AODN门户下线，目前数据已被归档。