Microsetella norvegica at station Svartnes, Balsfjord, Norway in June 2017 and June 2018 (sampled with a GoFlow bottle)

In the project MICROSNOW the ecological role of the small copepod Microsetella norvegica in the sub-Arctic Balsfjorden, Norway, was investigated. Since M. norvegica is often undersampled in net hauls with a standard WP-2 net (180 µm mesh size), this project collected zooplankton water samples with a 30 L GoFlow bottle at distinct depths (0, 10, 20, 50, 90, 120 m). From the collected water, 20 L were concentrated onto a 20 µm mesh sieve, the collected zooplankton was preserved with buffered formaldehyde and later different developmental stages of M. norvegica were enumerated (adult male, adult female, copepodite stage CIV- CV, copepodite stage CI-CIII, nauplius). Under the projectID "Microsnow_2017_2018_Balsfjord" there is also an an additional data set on the zooplankton community composition at the same station (WP-2 net, 64 µm mesh size) available on GBIF.本项目MICROSNOW针对挪威亚北极巴尔峡湾中的小型桡足类挪威微哲水蚤（Microsetella norvegica）的生态作用展开了调查。鉴于采用标准WP-2网（网孔尺寸180 μm）进行拖网采样时，该物种常出现采样不足的情况，本项目采用30 L GoFlow采水器在0、10、20、50、90、120 m的不同深度采集浮游动物水样。从采集的水样中取20 L，通过20 μm网孔筛网进行浓缩；采集得到的浮游动物经缓冲甲醛固定保存，后续对挪威微哲水蚤的各发育阶段进行了计数，涵盖雄性成体、雌性成体、桡足幼体CIV-CV期、桡足幼体CI-CIII期以及无节幼体。在项目标识符"Microsnow_2017_2018_Balsfjord"下，还包含一套采自同一站位的浮游动物群落组成数据集，该数据集采用网孔尺寸64 μm的WP-2网采集，可在GBIF（Global Biodiversity Information Facility）获取。