Planktonic Production Cycles and their Relationship with Fishing Resources on the Portuguese Coast

<p>The “Ciclos de Produção Planctónica e a sua Relação com os Recursos Pesqueiros” project aimed to describe the dynamics of planktonic communities associated with the coastal upwelling system in Portugal.</p>
<p>The dataset refers to the sampling carried out between 21 August and 3 September 1985, 23 November and 2 December 1985 and, 20 March and 4 April 1986 with the RV &#34;Noruega&#34;. The zooplankton sampling was carried out at 104 stations in an area off Portugal coast, defined by the 20 and 1000-meter isobathymetrics. The collection of zooplanktonic was carried out using a FAO net - 90 cm in diameter and 505 μm in mesh opening - in double oblique trawls, from the surface to a maximum depth of 200 m. In stations with depths of less than 200 m, sampling was carried out from circa 5 meters of the bottom to the surface. The volume of filtered water was determined using a previously calibrated flow meter located within the mouth of the net. The speed of the trawls was about 50 m per min., with the total drag time being measured and the cable angles recorded every 10 meters during the ascent of the net.</p>
<p>This report is a repository of the identification and enumeration data of zooplankton samples. It is intended to contribute to the establishment of a zooplankton database for the Portuguese coast and make it accessible to interested users. In this sense, data processing is minimal, with care taken to control the quality of the data and to standardise the units in which the values are expressed.</p>

“葡萄牙沿岸浮游生物生产周期及其与渔业资源的关系”项目旨在描述与葡萄牙沿岸上升流系统相关的浮游生物群落的动态变化。该数据集涉及1985年8月21日至9月3日、11月23日至12月2日，以及1986年3月20日至4月4日期间，使用“挪威”号海洋调查船进行的采样。浮游动物采样在葡萄牙海岸线外104个站点进行，这些站点位于20米和1000米等深线定义的区域。浮游动物的采集采用联合国粮农组织（FAO）90厘米直径、网眼孔径为505微米的网具，通过双斜向拖网从水面至最大深度200米进行。在深度小于200米的站点，采样从距海底约5米处至水面进行。通过位于网口处的预先校准的流量计确定过滤水的体积。拖网速度约为每分钟50米，记录了每10米上升过程中的拖网速度和电缆角度。本报告是浮游动物样本的鉴定和计数数据的存储库。旨在为葡萄牙海岸建立一个浮游动物数据库，并将其提供给感兴趣的用户。在此意义上，数据处理量最小，同时严格控制数据质量，并对表达数值的单位进行标准化。