Zooneuston from the Santos Basin

This dataset is part of the Santos Basin Characterization Project, funded by Petrobras. The data refer to zooneustonic organisms (epineuston and hyponeuston) and were collected during two periods: October 2019 (winter) and from December 2021 to March 2022 (summer). The samples were collected along the Santos Basin in profiles located in its southernmost portion at Cabo de Santa Marta in Santa Catarina, up to the northern region limited by the location of Cabo Frio. (Brazil). Zooneustonicorganisms were collected using a catamaran-type net (Hydro-Bios model 300). The equipment consists of two overlapping nets supported by two floats. The upper net samples the interface between the atmosphere and the surface film (epineuston), while the lower net collects the first 30 centimeters of the water column (hyponeuston). Both nets have an opening of 15 cm in height and 30 cm in width, a length of 400 cm, and a mesh size of 500 µm. To estimate the volume of water filtered, a General Oceanics flowmeter was attached to the lower net. A total of 195 species was identified, including 35 hydrozoans, 3 branchiopods, 80 copepods, 15 planktonic decapods, 11 chaetognaths, 6 appendicularians, 3 doliolids, 2 salps, and 40 fish larvae. These data are currently being organized and will be submitted for publication in a scientific journal within the relevant field.本数据集隶属于巴西石油公司（Petrobras）资助的桑托斯盆地表征项目。本次采集的样本为浮栖动物（zooneustonic organisms），涵盖表浮生物层（epineuston）与次浮生物层（hyponeuston）两类生物，采样工作分两个时段开展：2019年10月（冬季）以及2021年12月至2022年3月（夏季）。采样区域沿桑托斯盆地布设，覆盖其最南端圣卡塔琳娜州圣玛尔塔角（Cabo de Santa Marta）一带，北至弗鲁角（Cabo Frio）划定的北部边界（位于巴西境内）。浮栖动物样本采用Hydro-Bios型号300双体船型网具采集，该设备由两张通过浮筒支撑的重叠网体组成：上层网用于采集大气与海水表面膜之间的界面区域生物，下层网则采集水柱上层30厘米范围内的生物。两张网的开口尺寸均为高15厘米、宽30厘米，网长400厘米，网目尺寸为500微米。为准确估算过滤水体体积，研究人员在下层网体上加装了通用海洋学（General Oceanics）流量计。本次调查共鉴定出195个物种，其中包括35种水螅虫（hydrozoans）、3种鳃足类（branchiopods）、80种桡足类（copepods）、15种浮游十足目动物（planktonic decapods）、11种毛颚类动物（chaetognaths）、6种尾海鞘类（appendicularians）、3种纽鳃樽类（doliolids）、2种樽海鞘类（salps）以及40种鱼类幼体。目前该数据集正在进行系统性整理，将于近期提交至相关领域的学术期刊发表。