Abundance of benthic peracarids sampled in the Atlantic Sector of the Southern Ocean and Weddell Sea during expeditions JR15005, JR275, JR17003a, PS118

Peracarid abundance and composition were studied in the Atlantic Sector of the Southern Ocean and the Weddell Sea at a depth range of 403-2021 m. Samples were collected using an epibenthic sledge (EBS) during expeditions on board the RRS James Clarke Ross in the Filchner Trough (JR275), the South Orkney Islands (JR15005), the Prince Gustav Channel (JR17003a) and on board the RV Polarstern in the Eastern Antarctic Peninsula (PS118). Expeditions took place in February-March 2012, 2016, 2018 and 2019 respectively. Since the trawling distance between stations was not always the same, in order to make data comparable between different stations, numbers of individuals were standardized to 1000 m haul distances.

本研究针对南大洋大西洋扇区及威德尔海403~2021米水深范围内的囊虾类（Peracarid）丰度与群落组成展开调查。样品采集采用底上拖网（epibenthic sledge, EBS），搭载平台分别为英国皇家研究舰詹姆斯·克拉克·罗斯号（RRS James Clarke Ross）与极地号研究船（RV Polarstern）：前者先后在菲尔希纳海槽（JR275）、南奥克尼群岛（JR15005）及古斯塔夫王子海峡（JR17003a）开展作业，后者则在南极半岛东部海域（PS118）实施采样。上述航次分别于2012、2016、2018及2019年的2-3月开展。由于各采样站位间的拖网航程并不统一，为保证不同站位间数据的可比性，本研究将个体数量标准化为每1000米拖网航程对应的个体数。