Biotic data collected during identification trawls on the PELGAS integrated survey in the Bay of Biscay

the pélagiques gascogne (pelgas, doray et al., 2000) integrated survey aims at assessing the biomass of small pelagic fish and monitoring and studying the dynamics and diversity of the bay of biscay pelagic ecosystem in springtime. pelgas has been conducted within the eu common fisheries policy data collection framework and ifremer’s fisheries information system. details on survey protocols and data processing methodologies can be found in doray et al., (2014, 2018).this dataset comprises the abundance (no. of individuals), biomass (metric tons), mean length (cm), mean weight (g) of marine organisms collected by midwater trawling to identify fish echoes detected during pelgas surveys (2000-2018). all parameters have been raised to the trawl haul level. trawl haul metadata and species reference list are also provided.

Gascogne 海洋生物调查（简称 Pélagiques Gascogne，Pelgas，Doray 等人，2000 年）旨在评估小型浮游鱼的生物量，并对比斯开湾浮游生态系统的动态变化和多样性进行监测与研究。该调查在欧盟共同渔业政策数据收集框架和 IFREMER 渔业信息系统下进行。调查协议和数据处理方法的详细信息可参考 Doray 等人（2014，2018）的研究。本数据集包含了通过中层拖网收集的海洋生物的丰度（个体数量）、生物量（公吨）、平均长度（厘米）和平均重量（克），这些数据用于识别 Pelgas 调查（2000-2018 年）期间检测到的鱼类回波。所有参数均已提升至拖网拖曳水平。同时，还提供了拖网拖曳元数据和物种参考列表。