Occurrence of Eukaryotes in the size fraction >300 micrometres, collected worldwide during the Tara Oceans expedition (2009-2013) using a Bongo net and analysed on a ZooScan imaging platform

Tara expeditions sampled the world’s oceans with standardized protocols, putting an exceptional effort into sampling plankton diversity across a large size range, using a combination of water samples and net tows. The efforts to explore the genomic diversity of plankton, through metabarcoding and metagenomics, have led to well publicized papers and have made the renown of Tara. While a similar extensive effort has been put on imaging, the datasets are not public yet. In a limited number of stations, in addition to the usual 5μm -> ~5cm Tara sampling strategy, Bongo net samples were taken during the day and during the night, at the same station; this is the content of this dataset. Using a 300µm mesh net, it cover organisms from 300µm to ~3cm

塔拉科考航次（Tara Expeditions）采用标准化作业流程对全球海洋开展采样工作，投入大量精力针对跨度范围广泛的浮游生物多样性进行采样，结合水样采集与浮游生物拖网两种采样方式。通过元条形码测序（metabarcoding）与宏基因组学（metagenomics）探索浮游生物基因组多样性的相关研究成果，已发表于多篇广受关注的学术论文，也让塔拉科考航次声名远扬。尽管针对成像分析也投入了同等规模的工作，但相关数据集目前尚未对外公开。本数据集仅覆盖少量采样站位，除沿用塔拉科考航次常规的5微米至约5厘米采样策略外，还在同一站位分别于日间和夜间采集了邦戈网（Bongo net）样本，此类采样即为该数据集的核心内容。本次采样采用孔径为300微米的网具，覆盖尺寸范围为300微米至约3厘米的海洋生物。