Larval and post-larval crab data attained from zooplankton net samples during the 2012 & 2013 Arctic EIS Surveys and the 2017 Arctic IES Survey

Larval and post-larval crab sampling was performed at matching grid stations across three sampling years within Arctic IES Phase 1 and Phase 2 programs. Samples were collected at sea following NOAA-AFSC protocols for oblique bongo net tows from the 60cm diameter - 505um mesh nets. Samples in 2012 & 2013 were taken from Net 1 (Zoop. PI Alexei Pinchuk, UAF) and Net 2 in 2017 (Zoop PI David Kimmel and Weems). Collected samples were examined under a microscope in Juneau, all crab larvae sorted, enumerated, and identified into species and stage-specific taxonomic categories. The data files contain: station information, including latitude, longitude, and time; summary data for supporting environmental variables, and all crab species and stage specific abundances (number per sample). Files are comma separated values.

本研究在北极IES（Arctic IES）项目第一阶段与第二阶段框架内，于三个采样年度的匹配网格站位开展了蟹类幼体及后幼体采样工作。海上采样严格遵循美国国家海洋和大气管理局-阿拉斯加渔业科学中心（NOAA-AFSC）的规范，采用直径60厘米、网孔尺寸505微米的斜拖邦戈网进行拖网采样作业。2012年与2013年的采样使用网具1（浮游动物项目负责人：Alexei Pinchuk，阿拉斯加大学费尔班克斯分校（UAF）），2017年的采样使用网具2（浮游动物项目负责人：David Kimmel与Weems）。采集的样本在朱诺市通过显微镜进行镜检，完成所有蟹类幼体的分拣、计数，并按物种及发育阶段的分类学类别完成鉴定。数据文件包含以下内容：站位信息（涵盖纬度、经度与采样时间）、配套环境变量汇总数据，以及所有蟹类物种按发育阶段划分的丰度数据（单位：每样本个体数）。所有文件均采用逗号分隔值（CSV）格式。