Mesopelagic Crustaceans of the North Western Portuguese Coast between 1998 and 2000

The objective of this data collection was to study the structure of the mesopelagic ecosistem off the Northwestern Portuguese coast which is composed by planktonic and nectonics organisms. Mesopelagic organisms live during the day concentrating in big numbers in deeper depths while during the night migrates towards the upper layers. The data was collected aiming to study the composition and the Dynamics of the mesopelagic community and their trophic relations with the fish in the area. Data was collected with an Isaac-Kidd midwater trawl in May 1998 and 2000 and February 1999, together with environmental parameters as temperature, salinity, etc.本数据集的采集目标为研究葡萄牙西北海域的中层生态系统（mesopelagic ecosystem）结构，该生态系统由浮游（planktonic）与自游生物（nektonic）群落组成。中层生物日间会大量聚集于深水层，夜间则向表层水域洄游。本次数据采集旨在探究该区域中层生物群落的组成、动态特征及其与本地鱼类的营养关系。数据采集工作于1998年5月、1999年2月及2000年5月开展，采用艾萨克-基德中层拖网（Isaac-Kidd midwater trawl）完成，同时同步记录了水温、盐度等环境参数。