IMOS - AusCPR: Phytoplankton Abundance

The Australian Continuous Plankton Recorder (AusCPR) survey is a joint project of CSIRO Oceans and Atmosphere (O&A) and the Australian Antarctic Division (AAD) to measure plankton communities as a guide to the health of Australia's oceans. The phytoplankton abundance data are analysed as per Richardson et al 2006. Phytoplankton are usually counted from water samples after settling but in the CPR analysis we count the phytoplankton in situ. With CPR samples, the phytoplankton is captured by the mesh and are caught by the silk strands, by phytoplankton mucilage, and/or by other organisms on the silk. It is thus possible to see the phytoplankton cells directly on the mesh. In essence, the phytoplankton is already concentrated. Washing the phytoplankton off the silks to count in the standard manner may result in loss of or damage to cells before analysis. The aims of the AusCPR survey are to: * map plankton biodiversity and distribution * develop the first long-term plankton baseline for Australian waters * document plankton changes in response to climate change * provide indices for fisheries management * detect harmful algal blooms * validate satellite remote sensing * initialise and test ecosystem models. Servicing and maintenance of the CPRs and analysis of the samples for the AusCPR survey will be carried out by staff based at the O&A laboratories in Queensland and at the AAD in Hobart. The project was funded by the Integrated Marine Observing System (IMOS) and falls with the Ships of Opportunity facility. Data storage and access is planned to be interoperable with other national and international programs through the IMOS Infrastructure. Results from the AusCPR survey are available through the AODN portal: https://portal.aodn.org.au. This data is freely available but please acknowledge all relevant parties, as detailed in acknowledgement section. Source: https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/c1344979-f701-0916-e044-00144f7bc0f4. For information on using the data please refer to Richardson et al. 2006. It is advised that anyone using the data should read this methodology or contact the project contact person. 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 are able to 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, -999 means that the species was not looked for in that sample. The products are therefore applicable for use in time series analysis. There are 5 products to choose from: 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); Derived CPR Indices. The raw product contains the same information as the raw "flat table" form, but the absences have been added in and the taxonomic changes have been accounted for, for ease of use. Note: the binned and pivoted products described are currently only available by contacting [e-mail]. The latest raw data can be downloaded in "flat table" form (separate row for each taxon in each sample) on Step 3. All files are available in bio-volume instead of abundance on request.\nThis dataset has been superseded by the "IMOS - Phytoplankton Abundance and Biovolume (CPR)" collection that is available at https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/8e594cd1-363a-4b58-b741-9fa3624adb77 (this collection was removed from the AODN Portal in March 2022).

澳大利亚连续浮游生物记录仪（AusCPR）调查项目是澳大利亚联邦科学与工业研究组织海洋与大气分部（CSIRO Oceans and Atmosphere, O&A）与澳大利亚南极署（Australian Antarctic Division, AAD）联合发起的项目，旨在通过监测浮游生物群落状况评估澳大利亚海域的海洋健康水平。浮游植物丰度数据按照Richardson等人2006年的研究方法进行分析。

传统浮游植物计数通常针对沉降后的水样开展，但在CPR分析中我们采用原位计数方式。在CPR样本中，浮游植物被网具捕获，并通过丝网纤维、浮游植物黏液或丝网上附着的其他生物留存，因此可直接在网材上观察到浮游植物细胞。本质上，此类样本中的浮游植物已完成富集。若按照标准方法将浮游植物从丝网上洗脱后再计数，可能会在分析前导致细胞丢失或受损。

AusCPR调查项目的目标包括：
* 绘制浮游生物生物多样性与分布图谱
* 建立澳大利亚海域首个长期浮游生物基准数据集
* 记录气候变化背景下的浮游生物群落变化
* 为渔业管理提供相关支撑指数
* 监测有害藻华暴发情况
* 验证卫星遥感数据
* 初始化并验证生态系统模型

CPR设备的运维与样本分析工作将由位于昆士兰州O&A实验室以及霍巴特AAD的工作人员负责完成。本项目由集成海洋观测系统（Integrated Marine Observing System, IMOS）资助，隶属于“机会船舶”设施（Ships of Opportunity facility）。数据存储与访问计划通过IMOS基础设施实现与其他国内外相关项目的互操作性。

AusCPR调查的成果可通过AODN门户获取：https://portal.aodn.org.au。本数据集免费开放，请务必按照致谢章节的要求注明所有相关贡献方。
数据来源：https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/c1344979-f701-0916-e044-00144f7bc0f4。
关于数据使用的详细说明请参考Richardson等人2006年的研究，建议所有使用本数据的人员阅读该方法文档或联系项目联系人。

本数据集以分箱产品（binned products）形式发布，以提升易用性。随着分类学研究的发展以及分析人员培训水平的提升，可被准确识别的物种数量逐年增加。本系列产品已适配此类研究进展，并计入样本中真实存在的物种缺失情况。丰度值为0代表该物种在样本中被检出但未观察到，-999代表该物种未在该样本中开展检测。因此本系列产品适用于时间序列分析。

本次提供的分箱产品共包含5类：
1. 原始产品（"Raw product"）：包含全部原始数据
2. 物种类别产品（"Species product"）：包含所有已完成物种鉴定的数据集
3. 属级别产品（"Genus product"）：包含所有按属级分类的分箱数据
4. 高级分类群产品（"Higher taxonomic group"）：包含所有按功能群分类的分箱数据
5. 衍生CPR指数产品（"Derived CPR Indices"）

原始产品与原始"flat table"形式包含的信息完全一致，但已补充物种缺失记录并适配分类学研究的更新，以进一步提升使用便捷性。注意：本文所述的分箱与枢轴产品目前仅可通过发送邮件至[e-mail]获取。最新的原始数据可在步骤3中以"flat table"形式下载（每个样本中的每个分类群单独占一行）。所有文件均可根据需求以生物体积（bio-volume）而非丰度形式提供。

本数据集已被"IMOS - Phytoplankton Abundance and Biovolume (CPR)"数据集所取代，该数据集可通过https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/8e594cd1-363a-4b58-b741-9fa3624adb77获取（该数据集于2022年3月从AODN门户下架）。