Northeast Fisheries Science Center Bottom Trawl Survey Data

This is the Northeast Fisheries Science Center Bottom Trawl Survey database for Northwest Atlantic marine organisms. Survey cruises use a bottom trawl to sample randomly selected stations in an attempt to delineate the species composition, geographic distribution, and abundance of various resources. Fish and selected invertebrate species are identified. Weight, length, total catch numbers, age structures, maturity stages, sex determinations and food content are recorded or collected during the survey cruises but only weight, total catch numbers, and sex determinations are available here. Ichthyoplankton and zooplankton data is available for a subset of the stations. Geographic coverage is from Cape Hatteras to the Gulf of Maine and from the coast to the slope water.

本数据集为美国东北渔业科学中心（Northeast Fisheries Science Center）针对西北大西洋海洋生物建立的底拖网调查数据库。本调查航次采用底拖网对随机选取的采样站位开展采样，旨在厘清各类海洋生物的物种组成、地理分布与资源丰度。调查已完成鱼类及选定无脊椎动物物种的分类鉴定工作。调查航次中记录或采集了体重、体长、总捕捞量、年龄结构、成熟度、性别判定及胃含物数据，但本数据集仅提供体重、总捕捞量及性别判定三项数据。部分站位附带了鱼卵仔鱼浮游生物（Ichthyoplankton）与浮游动物（Zooplankton）相关数据。本数据集的地理覆盖范围为从哈特拉斯角（Cape Hatteras）至缅因湾（Gulf of Maine），涵盖从近岸至斜坡水团的全部海域。