Benthic assemblage and habitat dynamics monitored with photogrammetry reconstructions of the Eiffel Tower hydrothermal edifice (2015, 2018 and 2020)

the eiffel tower hydrothermal edifice is a large structure of ~450 m2 located at a depth of 1700 m in the south-east of the lucky strike hydrothermal vent field. since the deployment of the emso-azores observatory in 2010, the edifice has been repeatedly surveyed with the remotely operated vehicle victor6000 for inter-annual monitoring. video transects were collected with a forward-looking camera in 2015, 2018 and 2020. video sequences were used to build 3d models of the edifice using structure-from-motion techniques. surface of substrata, vent megafaunal assemblages, microbial mat and the position of hydrothermal vent outflows and topographic changes were digitised over the 3d models for each side of the edifice. these variables were used to investigate scales of ecological dynamics over space and time. hereby, we provide the dataset as well as a method to extract and visualise data in open-source software (r).

埃菲尔塔地热建筑群是一座占地约450平方米的大型结构，位于幸运打击地热喷口场东南方向1700米深的海底。自2010年EMSO-亚速尔观测站部署以来，该建筑群已多次通过遥控潜水器Victor6000进行年度监测。2015年、2018年和2020年，利用前视相机采集了视频横断面。通过结构光运动技术，利用视频序列构建了建筑群的3D模型。对每个侧面的基岩表面、喷口大型生物群、微生物膜以及地热喷口出口位置和地形变化进行了数字化处理。这些变量被用于研究空间和时间上的生态动力学尺度。因此，我们提供了该数据集以及一种在开源软件（R）中提取和可视化数据的方法。