List of stations with data collected during the iMAR 2021/Eurofleets+ research cruise in Mid Atlantic Ridge (Azores EEZ)

this dataset contain the metadata for all stations conducted during the imar cruise “the integrated assessment of the distribution of vulnerable marine ecosystem along the mid-atlantic ridge (mar) in the azores region”, that took place aboard the research vessel pelagia of the royal netherlands institute for sea research between may 19th and june 2nd 2021. this expedition was funded by the sea oceans program of eurofleets+ and the h2020 european project iatlantic, and was led by the university of the azores (portugal) in collaboration with the hydrographic institute and university of porto (portugal), the university of aarhus (denmark), the national oceanography center (united kingdom), geomar (germany), the university museum of bergen (norway), the pp shirshov institute of oceanology (russia), and the university of vale do itajaí (brazil). statistics: cruise duration was 17 days, 2,500 km of transits, 6 areas visited, 5,500 km2 of mapped seabed (mainly in the north portion of the mar in the eez around the azores), 19 dives with the nioz video system that resulted in 54 hours of deep-sea images over 48 km of the seabed, 13 stations for the analysis of water mass properties and to collect sediments, which resulted in 380 samples for environmental dna, 280 samples for nutrient analyses, 27 sediment samples for geological analyses, 24 for microplastic analyses, 10 samples for bacteriological, and 10 samples meiofauna analyses.

本数据集收录了在“对中大西洋脊（MAR）沿线易受损害海洋生态系统分布的综合评估”的IMAR巡航活动中所采集的所有站点的元数据。该巡航活动于2021年5月19日至6月2日在荷兰皇家海洋研究所的科研船“Pelagia”上进行。此次远征由Eurofleets+海洋计划及欧盟H2020项目iAtlantic资助，由亚速尔大学（葡萄牙）主导，并与葡萄牙水文测量研究所和波尔图大学、丹麦奥尔胡斯大学、英国国家海洋中心、德国geomar、挪威卑尔根大学博物馆、俄罗斯PP Shirshov海洋研究所以及巴西瓦莱杜伊塔雅伊大学共同协作。统计数据如下：巡航历时17天，航行2,500公里，访问6个区域，绘制5,500平方公里海底地形图（主要在中大西洋脊北段及亚速尔群岛专属经济区），进行19次潜水，使用NIOZ视频系统拍摄了48公里海底的深海影像，共计54小时，设立13个站点分析水团特性并采集沉积物，共获得380份环境DNA样本、280份营养分析样本、27份沉积物样本用于地质分析、24份用于微塑料分析、10份细菌学样本以及10份 meiofauna 分析样本。