High frequency observations of the secondary production cycle in Prince William Sound from 2016-2018

We added the capability to directly observe zooplankton distributions to an autonomous profiling mooring by installing a camera system, essentially an underwater microscope with a lower size limit of 100 microns, images approximately 1 liter of water 5 times per second. The image is scanned for plankton and other particulates by automated software, and assigned to different taxonomic and functional categories. By profiling the camera every day, we will be able to observe the cycle of secondary production in central PWS at much finer scales than have ever been done before, and produce an operational measurement of zooplankton abundance that may be used by fishery managers for planning and decision making. This dataset is composed of 16 bit TIFF files captured by the camera system. Please see the included README file (1502_images_readme.txt) for details on image capture, directory structure, and file-naming conventions.

我们通过加装一套摄像系统，为自主剖面锚泊观测系统（autonomous profiling mooring）增添了直接观测浮游动物（zooplankton）分布的能力。该系统本质上是一台最小检测尺寸为100微米的水下显微镜，每秒可对约1升水体完成5次成像采集。配套的自动化识别软件可对采集到的图像开展浮游生物及其他颗粒物的扫描识别，并将其划分至不同的分类学与功能类群（taxonomic and functional categories）。通过每日对该摄像系统进行剖面标定，我们能够以远超以往的精细尺度观测威廉王子湾中部（PWS）的次级生产（secondary production）循环，并生成可供水产管理者用于规划与决策的浮游动物丰度业务化测量数据。本数据集由该摄像系统采集的16位TIFF格式文件组成。有关图像采集流程、目录结构及文件命名规范的详细信息，请参阅附带的README文件（1502_images_readme.txt）。