Abstract. In marine ecosystems, most physiological, ecological, or physical processes are size dependent. These include metabolic rates, the uptake of carbon and other nutrients, swimming and sinking velocities, and trophic interactions, which eventually determine the stocks of commercial species, as well as biogeochemical cycles and carbon sequestration. As such, broad-scale observations of plankton size distribution are important indicators of the general functioning and state of pelagic ecosystems under anthropogenic pressures. Here, we present the first global datasets of the Pelagic Size Structure database (PSSdb), generated from plankton imaging devices. This release includes the bulk particle normalized biovolume size spectrum (NBSS) and the bulk particle size distribution (PSD), along with their related parameters (slope, intercept, and R2) measured within the epipelagic layer (0–200 m) by three imaging sensors: the Imaging FlowCytobot (IFCB), the Underwater Vision Profiler (UVP), and benchtop scanners. Collectively, these instruments effectively image organisms and detrital material in the 7–10 000 µm size range. A total of 92 472 IFCB samples, 3068 UVP profiles, and 2411 scans passed our quality control and were standardized to produce consistent instrument-specific size spectra averaged to 1° × 1° latitude and longitude and by year and month. Our instrument-specific datasets span most major ocean basins, except for the IFCB datasets we have ingested, which were exclusively collected in northern latitudes, and cover decadal time periods (2013–2022 for IFCB, 2008–2021 for UVP, and 1996–2022 for scanners), allowing for a further assessment of the pelagic size spectrum in space and time. The datasets that constitute PSSdb's first release are available at https://doi.org/10.5281/zenodo.11050013 (Dugenne et al., 2024b). In addition, future updates to these data products can be accessed at https://doi.org/10.5281/zenodo.7998799.

中文翻译：

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远洋尺寸结构数据库首次发布：从浮游生物成像设备获得的海洋尺寸光谱全球数据集


摘要。在海洋生态系统中，大多数生理、生态或物理过程都依赖于大小。这些包括代谢率、碳和其他营养物质的吸收、游泳和下沉速度以及营养相互作用，这些最终决定商业物种的种群，以及生物地球化学循环和碳封存。因此，对浮游生物大小分布的大规模观测是人为压力下浮游生态系统总体功能和状态的重要指标。在这里，我们展示了由浮游生物成像设备生成的中上层大小结构数据库（PSSdb）的第一个全球数据集。该版本包括通过三个成像在上层 (0–200 m) 内测量的散装颗粒归一化生物体积尺寸谱 (NBSS) 和散装颗粒尺寸分布 (PSD) 及其相关参数（斜率、截距和 R2）传感器：成像 FlowCytobot (IFCB)、水下视觉轮廓仪 (UVP) 和台式扫描仪。总的来说，这些仪器可以有效地对 7–10000μm 尺寸范围内的生物体和碎屑物质进行成像。总共 92 472 个 IFCB 样品、3068 个 UVP 剖面和 2411 个扫描通过了我们的质量控制，并进行了标准化，以生成一致的仪器特定尺寸光谱，平均为 1° × 1° 纬度和经度以及按年份和月份。我们的特定仪器数据集涵盖了大多数主要海洋盆地，但我们获取的 IFCB 数据集除外，这些数据集专门在北纬地区收集，并涵盖十年时间段（IFCB 为 2013-2022 年，UVP 为 2008-2021 年，UVP 为 2008-2021 年，1996-2022 年）。用于扫描仪），可以进一步评估空间和时间上层的大小谱。 构成 PSSdb 第一个版本的数据集可在 https://doi.org/10.5281/zenodo.11050013 上获取（Dugenne 等人，2024b）。此外，这些数据产品的未来更新可以访问https://doi.org/10.5281/zenodo.7998799。