Physical oceanography, abundance, biomass and respiration data of fishes (Stomiiformes) from the BATHYPELAGIC cruise (June 2018) to the Northeast Atlantic Ocean

Physical oceanography variables and carbon remineralisation (juveniles/adults of Cyclothone species and Argyropelecus hemigymnus) were analysed during the BATHYPELAGIC cruise (North Atlantic, June 2018). This dataset contains the depth, temperature, and conductivity which were recorded from surface to a maximum depth of 2000 m using a SeaBird SBE 25plus CTD equipped with a Seabird-43 Dissolved Oxygen sensor and a Seapoint Fluorometer. Values of numerical abundance, biomass, specific ETS activity, specific respiraton and respiration flux data analyzed from Northwest Africa (20° N, 20° W) to the South of Iceland are presented. A. hemigymnus specimens were collected using a ''Mesopelagos” net (5 x7 m mouth opening, 58 m total length) equipped with graded-mesh netting (starting with 30 mm and ending with 4 mm) and a multi-sampler for collecting samples from 5 different depth layers. However, Cyclothone specimens were collected using the Multiple Opening/Closing Net and Environmental Sensing System (MOCNESS-1 m²) zooplankton net with a 0.2 mm mesh size and with several nets for collecting samples from 8 different depth layers. The Mesopelagos catches were sorted out and identified on board to the lowest possible taxon, and specimens selected for Electron Transfer System (ETS) analyses were immediately frozen in liquid nitrogen for later analysis in the laboratory. MOCNESS samples were preserved in 5% buffered formalin, and specimens were sorted out later in the laboratory. Stomiiforms respiration in the meso- and bathypelagic zones of the ocean were estimated along the transect. Abundance, biomass, specific ETS activity, specific respiration and respiration are given by layer between e.g. 100 m and 1000 m depth (MOCNESS net, 1900–1600 m, 1600–1300 m, 1300–1000 m, 1000–700 m, 700–400 m, 400–200 m, 200–100 m and 100–0 m; Mesopelagos, 1900–1200 m, 1200–800 m, 800–500 m, 500–200 m and 200–0 m).

在深海层巡航（BATHYPELAGIC cruise，2018年6月，北大西洋）期间，研究人员分析了物理海洋学变量与碳再矿化过程（涉及圆罩鱼属物种及半裸银斧鱼Argyropelecus hemigymnus的幼体/成体）。本数据集包含深度、温度和电导率数据，这些数据通过配备Seabird-43溶解氧传感器与Seapoint荧光计的SeaBird SBE 25plus温盐深仪（CTD）采集，范围从海面至最大深度2000米。数据集呈现了从西北非（北纬20°，西经20°）至冰岛南部区域的个体丰度、生物量、比电子传递系统（Electron Transfer System, ETS）活性、比呼吸率及呼吸通量数据。半裸银斧鱼（A. hemigymnus）样本通过中层网（Mesopelagos net，开口5×7米，总长58米）采集，该网具配备分级网目（从30 mm渐变至4 mm）及多采样器，可采集5个不同深度层的样本。而圆罩鱼属样本则通过多开/关网与环境传感系统（Multiple Opening/Closing Net and Environmental Sensing System, MOCNESS-1 m²）浮游生物网采集，该网目尺寸为0.2 mm，含多个网具以采集8个不同深度层的样本。中层网捕获物在船上分类并鉴定至尽可能低的分类单元，选取用于电子传递系统（ETS）分析的样本立即用液氮冷冻，以备后续实验室分析。MOCNESS样本则保存在5%缓冲福尔马林中，样本分类工作后续在实验室完成。研究沿断面估算了海洋中层与深海层中巨口鱼目的呼吸作用。个体丰度、生物量、比ETS活性、比呼吸率及呼吸数据按深度层划分提供，例如100米至1000米深度区间（MOCNESS网：1900–1600 m、1600–1300 m、1300–1000 m、1000–700 m、700–400 m、400–200 m、200–100 m及100–0 m；中层网：1900–1200 m、1200–800 m、800–500 m、500–200 m及200–0 m）。