Gelatinous zooplankton abundance and wet weight biomass observations from research cruises for the Northern Gulf of Alaska (NGA) LTER site, 2018 - 2020

This dataset presents the distribution, abundance and biomass (wet weight) of the large gelatinous zooplankton (Cnidarians and Ctenophores) obtained from methot net trawls during the NGA-LTER research cruise conducted in the Gulf of Alaska aboard the R/V Wolstad, R/V Tiglax, and R/V Silkuliaq during Spring, Summer, and Fall of 2018 - 2020. Trawls were conducted at night, just below the surface, with a Methot net with a surface area of 5 square meters (10 m long, 3 mm mesh body ). These data are part of the Northern Gulf of Alaska Long Term Ecological Research (NGA LTER) program. The LTER program is a National Science Foundation–funded network of 28 sites nationwide that focus on the influence of long-term and large-scale phenomenon on ecosystems. Additional funding for sampling is provided by the North Pacific Research Board (NPRB), the Alaska Ocean Observing System (AOOS), and the Exxon Valdez Oil Spill Trustee Council (EVOS) via the Gulf Watch Alaska program.

本数据集收录了2018-2020年春、夏、秋三季，在阿拉斯加湾搭载R/V Wolstad、R/V Tiglax及R/V Silkuliaq科考船开展的NGA-LTER研究航次中，通过梅托拖网（Methot net）拖采获得的大型凝胶状浮游动物（涵盖刺胞动物（Cnidarians）与栉水母动物（Ctenophores）两类）的分布、丰度及生物量（湿重）数据。本次拖网作业均于夜间在表层下方开展，所用梅托拖网网面面积为5平方米（长10米，网衣孔径3毫米）。
本数据集所收录的数据隶属于阿拉斯加湾北部长期生态研究（NGA LTER）计划。LTER计划是由美国国家科学基金会资助的全国性生态研究网络，在全美范围内设有28个观测站点，聚焦长期与大尺度现象对生态系统的影响。本采样工作额外获得了北太平洋研究委员会（North Pacific Research Board, NPRB）、阿拉斯加海洋观测系统（Alaska Ocean Observing System, AOOS）以及埃克森瓦尔迪兹溢油赔偿委员会（Exxon Valdez Oil Spill Trustee Council, EVOS）通过阿拉斯加海湾观察计划提供的资助。