Bottom trawl positions from year 2002 to 2013 of the EU NAFO groundfish surveyon boards R/V Vizconde de Eza

Tows from year 2002 to 2013 of the EU NAFO groundfish survey, with biomass data of different invertebrates (Sponges, Sea Pens, Large Gorgonians and small Gorgonias) and presence of pennatulaceans. Gear used was a Bottom trawl. Since 2003, all surveys were conducted using the Spanish R/V Vizconde de Eza. Until 2005, the invertebrate data collection was non systematic (it was sporadic) and only few sponge data was collected. The \"-\" means that there is NO DATA AVAILABLE.. EU NAFO groundfish surveys (NAFO Div. 3MNLO) has been co-funded by the European Union through the European Maritime and Fisheries Fund within the National Program. Data Citation: Reports of bottom trawl surveys (2007-2017) on boards R/V Vizconde de Eza本数据集收录2002年至2013年欧盟（European Union, EU）北大西洋渔业组织（Northwest Atlantic Fisheries Organization, NAFO）底层鱼类调查的拖网作业数据，涵盖多种无脊椎动物的生物量数据以及海鳃类（pennatulaceans）的存在记录，其中无脊椎动物包括海绵（Sponges）、海笔（Sea Pens）、大型柳珊瑚（Large Gorgonians）与小型柳珊瑚（small Gorgonias）。本次调查采用的采样装备为底拖网（Bottom trawl）。自2003年起，所有调查作业均由西班牙"维斯科恩德德埃扎号"科考调查船（R/V Vizconde de Eza）执行。截至2005年，无脊椎动物数据的采集工作缺乏系统性，仅为零星开展，且仅收集到少量海绵相关数据。数据记录中的"-"代表无可用数据。本次欧盟NAFO底层鱼类调查（NAFO分区3MNLO）由欧盟通过欧洲海事与渔业基金（European Maritime and Fisheries Fund）在国家计划框架内联合资助。数据引用说明：《"维斯科恩德德埃扎号"科考船底拖网调查报告（2007-2017）》