Seabed images taken at pilot oyster reefs in the Borkum Riffgrund marine protected area during Heincke HE601 cruise (June 2022)

Imagery transects with a camera attached to a frame design for taking pictures in a 50 x 50 cm area. Seabed images transects were carried out by scientific divers during the Heincke HE601 cruise focusing on developing and testing monitoring techniques at the Borkum Reef Ground and Sylt Outer Reef Marine Protected Areas. The camera used was a Canon EOS M6 camera, the pictures were taken perpendicularly to the seabed. The transects were done along a preset track across the reefs, number of pictures per transect varied based on diving time. The seabed images provide insights into the general composition of key species, higher systematic groups and ecological guilds. The images also contain valuable information on how benthic species are associated to each other. Transect files include individual images, whereas metadata of each image including diving depth, date/time, if the image was further analyzed, corresponding diver is found in a separate file. Geographical coordinates of individual images is unavailable.

本数据集的图像样带（imagery transects）采集采用搭载特制框架的相机，该框架可将单张拍摄区域限定为50×50厘米。海底图像样带的采集工作由科学潜水员在Heincke HE601航次期间完成，作业区域为博库姆礁海域（Borkum Reef Ground）与叙尔特外礁海洋保护区（Sylt Outer Reef Marine Protected Areas），本次作业核心目标为开发并测试海洋监测技术。本次采集使用的相机为佳能EOS M6（Canon EOS M6），拍摄角度严格垂直于海底表面。样带沿预设的跨礁航线布设，每条样带的拍摄照片数量根据实际潜水时长灵活调整。这批海底图像可用于解析关键物种、高级分类类群以及生态类群的整体组成特征，同时还蕴藏了底栖生物（benthic species）种间相互关联模式的宝贵信息。样带数据集文件包含单张原始图像，而每张图像的元数据（metadata）——包括潜水深度、拍摄日期与时间、是否已开展后续分析以及对应潜水员信息——均存储于单独的元数据文件中。单张图像对应的地理坐标信息暂未提供。