Marine Bird Sighting Data, Arctic Marine Biodiversity Observing Network (AMBON) Chukchi Sea research cruise on the vessel Norseman II from 2017-08-05 to 2017-08-25 (NCEI Accession 0178638)

This dataset contains seabird survey and associated environmental conditions data collected in the Chukchi Sea during the 5 August - 25 August 2017 Arctic Marine Biodiversity Observing Network (AMBON) research cruises. Seabirds were surveyed using line transect methods. Seabird observations were recorded directly into a laptop computer using software which logged the geographic coordinates of each sighting. Incidental sightings of marine mammal were also recorded. Supplementary environmental data are included for the beginning of each survey period. The dataset is two comma-separated values (csv) files. The file named dlog_2017_dwc_core.csv contains the count of observed marine birds and mammals by species, their behavior, and the environmental conditions recorded during the surveys for the 2017 research cruise. The file named taxon_codes_2017.csv is an associated taxon code list of the observed species. This dataset was transformed from the native format into a table structure using Darwin Core term names as column names.

本数据集涵盖2017年8月5日至8月25日期间，在楚科奇海开展的北极海洋生物多样性观测网络（Arctic Marine Biodiversity Observing Network，AMBON）科考航次中采集的海鸟调查及配套环境状况数据。海鸟调查采用样线法开展，调查人员通过专用软件将海鸟目击记录直接录入笔记本电脑，该软件可自动记录每一次目击事件的地理坐标。本次调查同时记录了偶然目击到的海洋哺乳动物。各调查时段的起始阶段均包含补充环境数据。本数据集包含两份逗号分隔值（comma-separated values，CSV）文件：名为dlog_2017_dwc_core.csv的文件包含2017年科考航次调查期间记录的观测海鸟及海洋哺乳动物的物种数量、行为特征及对应环境状况；名为taxon_codes_2017.csv的文件为观测物种的关联分类单元代码列表。本数据集已从原始格式转换为以达尔文核心（Darwin Core）术语名称作为列名的表格结构。