Aggregate, phytoplankton and zooplankton abundance measured with an underwater vision profiler 5 (UVP5) during Maria S. Merian cruise MSM22

Data was collected with an Underwater Vision Profiler, Version 5 (UVP5; Picheral et al 2010). The UVP5 was mounted on the CTD-Rosette. It was always deployed in vertical mode and operated during each CTD cast. The UVP5 takes pictures of an illuminated water volume every few milliseconds. Imaged items are counted and for items > 0.5 mm a vignette or thumbnail was saved, which was later classified by experts. The information on the abundance of different aggregate, phytoplankton and zooplankton categories is listed in the columns \"Individuals per unit volume\".

本数据集采用第5版水下视觉剖面仪（Underwater Vision Profiler 5, UVP5; Picheral et al 2010）采集所得。该UVP5搭载于CTD-Rosette系统之上，全程以垂直部署方式作业，并在每一轮CTD测站投放过程中同步运行。UVP5每隔数毫秒即可对一束受照射水体体积完成成像，系统会对成像捕获的目标进行计数，并针对尺寸大于0.5毫米的目标保存其晕影或缩略图像，后续由专家对这些图像开展分类鉴定工作。不同团聚体、浮游植物与浮游动物类群的丰度信息，均列于"单位体积个体数（Individuals per unit volume）"字段列中。