BIONESS profile and plankton sample collection data, cruise PTS01, northern Gulf of Mexico, October – November 2015

Depth-discrete plankton samples were collected during CONCORDE cruise PTS01 (October 28th-November 5th, 2015) using a Bedford Institute of Oceanography Net Environmental Sampling System (BIONESS). The BIONESS (0.25 m2 opening) was fitted with six 333-µm mesh nets and three 202-µm mesh nets. Profile data (depth, temperature, salinity) were obtained with a SBE-19+ CTD (Sea-Bird Electronics) integrated with the BIONESS data logger. Samples were collected generally between the 15 and 40 m depth contours between the Chandeleur Islands and the Alabama/Florida border to assess the horizontal and vertical distribution of plankton under low freshwater discharge conditions characteristic of the Fall. Plankton data (e.g., displacement volumes, ichthyoplankton and zooplankton abundances) for BIONESS tows are provided in a separate dataset R4.x260.000:0007 (doi:10.7266/N7XP730K)本研究在CONCORDE巡航PTS01（2015年10月28日至11月5日）期间采集了分层离散浮游生物样本，采样设备为贝德福德海洋学研究所网式环境采样系统（Bedford Institute of Oceanography Net Environmental Sampling System，以下简称BIONESS）。该BIONESS采样网开口面积为0.25平方米，配备6张333微米孔径网具与3张202微米孔径网具。集成于BIONESS数据记录仪的SBE-19+ 温盐深仪（Conductivity Temperature Depth, CTD，Sea-Bird Electronics出品）获取了包括水深、温度与盐度在内的剖面数据。采样区域主要覆盖尚德勒尔群岛与阿拉巴马州/佛罗里达州边界之间的15至40米等深线海域，旨在评估秋季典型低淡水径流条件下浮游生物的水平与垂直分布特征。BIONESS拖网获取的浮游生物相关数据（如置换体积、鱼卵仔鱼及浮游动物丰度）已收录于独立数据集R4.x260.000:0007（doi:10.7266/N7XP730K）