Global distributions of diatoms abundance, biovolume and biomass - Gridded data product (NetCDF) - Contribution to the MAREDAT World Ocean Atlas of Plankton Functional Types

This study is a first effort to compile the largest possible body of data available from different plankton databases as well as from individual published or unpublished datasets regarding diatom distribution in the world ocean. The data obtained originate from time series studies as well as spatial studies. This effort is supported by the Marine Ecosystem Data (MAREDAT) project, which aims at building consistent data sets for the main PFTs (Plankton Functional Types) in order to help validate biogeochemical ocean models by using converted C biomass from abundance data. Diatom abundance data were obtained from various research programs with the associated geolocation and date of collection, as well as with a taxonomic information ranging from group down to species. Minimum, maximum and average cell size information were mined from the literature for each taxonomic entry, and all abundance data were subsequently converted to biovolume and C biomass using the same methodology.

本研究系首次尝试汇编从不同浮游生物数据库以及个体已发表或未发表的数据集中搜集的关于世界海洋硅藻分布的最大可能数据集。所获得的数据来源于时间序列研究以及空间研究。此项目得到海洋生态系统数据（MAREDAT）项目的支持，该项目的宗旨在于构建主要浮游生物功能类型（Plankton Functional Types）的一致性数据集，以利用转换后的C生物量数据验证生物地球化学海洋模型。硅藻丰度数据来源于多个研究项目，包括相关的地理位置和采集日期，以及从种群直至物种的分类信息。针对每个分类条目，从文献中挖掘了最小、最大和平均细胞大小信息，所有丰度数据随后均采用统一的方法转换为生物体积和C生物量。