IMOS - Zooplankton Abundance and Biomass (reference stations)

This dataset comprises the zooplankton abundance and biomass measurements from samples collected at the Integrated Marine Observing Systems (IMOS) National Reference Stations (NRS) and other repeatedly sampled stations. For information on using the data from the NRS stations please refer to Eriksen et al. 2019. It is advised that anyone using this data should read this methodology or contact the project contact person to understand the nuances of each sampling and analysis chain. 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 7 products to choose from. Zooplankton abundance products are available at 5 levels: Raw product (includes all data) Copepods product (all data where species have been identified, Copepods only) Non-Copepods product (all data where species have been identified, non-Copepods only)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 total biomass per samples)PlusDerived indices – NRS only (useful indices at sample level for NRS data)Depth Binned CTD Data – NRS only (NRS CTD data binned to 1m and matched to TripCode)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 04/04/2019. However, they were removed again in November 2020 because technical issues prevented them from being regularly updated.This dataset supersedes the following collections: "IMOS National Reference Station (NRS) - Zooplankton Biomass" - https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/c13451a9-7cfc-091c-e044-00144f7bc0f4 and "IMOS National Reference Station (NRS) - Zooplankton Abundance" - https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/c13451a9-7cfe-091c-e044-00144f7bc0f4. Both of these collections were removed from the AODN Portal in December 2021, and the data has been archived.本数据集涵盖了综合海洋观测系统（Integrated Marine Observing Systems，IMOS）国家参考站（National Reference Stations，NRS）及其他重复采样站点所采集样本中的浮游动物丰度与生物量测量数据。如需了解NRS站点数据的使用规范，请参考Eriksen等人2019年的研究成果。建议所有使用本数据集的人员先研读该方法文档，或联系项目联系人，以掌握各采样与分析流程的细节差异。 为便于使用，本数据集以分箱产物（binned products）形式发布。随着分类学研究的迭代更新，以及分析人员经培训后能力提升，可被识别的物种数量逐年增加。本数据集的分箱产物已适配上述变化，并兼顾了样本中物种的真实缺失情况：丰度值为0代表该物种在样本中被排查但未检出，空值（空单元格）则代表该样本未对该物种进行排查。因此该分箱产物可用于时间序列分析。 本数据集共提供7种可供选择的分箱产物，其中浮游动物丰度产物包含以下5个层级： 1. 原始产物（涵盖全部数据） 2. 桡足类产物（仅包含已识别物种的桡足类数据） 3. 非桡足类产物（仅包含已识别物种的非桡足类数据） 4. 属级产物（涵盖所有归至属级的分箱数据） 5. 高级分类群产物（涵盖所有归至功能群的分箱数据） 上述各类产物均包含各样本的总生物量。 此外还包含两类附加产物： - 衍生指数产物——仅针对NRS站点（为NRS数据提供样本级实用指数） - 深度分箱CTD数据——仅针对NRS站点（将NRS的CTD数据按1米间隔分箱，并与航次代码（TripCode）进行匹配） 浮游动物丰度数据最初仅以平面表格形式的原始数据在澳大利亚海洋数据门户（AODN Portal）发布，每个物种单独占一行，且未针对分类学变化或真实物种缺失情况进行任何调整。首个"可直接用于分析"的产物版本于2019年4月4日发布，但在2020年11月因技术问题无法定期更新而被下架。 本数据集替代了以下两个数据集："IMOS国家参考站（NRS）——浮游动物生物量"（链接：https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/c13451a9-7cfc-091c-e044-00144f7bc0f4）以及"IMOS国家参考站（NRS）——浮游动物丰度"（链接：https://catalogue-imos.aodn.org.au/geonetwork/srv/api/records/c13451a9-7cfe-091c-e044-00144f7bc0f4）。上述两个数据集均于2021年12月从AODN门户下架，其数据已被归档保存。