Calcifying zooplankton standing stocks and in the North Pacific from the R/V Kilo Moana cruise KM1712

This dataset compiles the standing stocks (ind/m³), the integrated standing stocks (ind/m²) and the integrated CaCO3 standing stocks (mg/m²) for three groups of zooplanktonic calcifying organisms: pteropods, heteropods and foraminifers. The organisms were collected by oblique towing (Ø 0.5 m, 90 μm mesh size, SeaGear mechanical flowmeter) in the North Pacific between Hawaii and the Gulf of Alaska during the R/V Kilo Moana cruise KM1712 in August 2017. The sampling strategy was designed to capture an integrated sample of all foraminifers, pteropods and heteropods from juveniles to adults living throughout the upper water column. Pteropods and heteropods were quantified and shell diameter measured using a Leica Z16 AP0 binocular light microscope at 20-100x. Pteropods and heteropods were identified and grouped respectively in three (Cavoliniidae, Cymbuliidae, Limacinidae) and two (Atlantidae, Carinidae) families. All Foraminifera were wet picked from the sample splits, divided into groups greater and less than 125 µm, counted, and weighed with a high precision microbalance.

本数据集汇编了三类浮游动物钙化生物——翼足类（pteropods）、异足类（heteropods）和有孔虫（foraminifers）的现存量（ind/m³）、整合现存量（ind/m²）及整合碳酸钙现存量（mg/m²）。这些生物于2017年8月在R/V Kilo Moana号KM1712航次期间，在北太平洋夏威夷与阿拉斯加湾之间海域，通过斜拖网（直径0.5米，网目90μm，配备SeaGear机械流量计）采集。采样策略旨在获取上层水体中从幼体到成体的所有有孔虫、翼足类及异足类的整合样本。翼足类和异足类通过Leica Z16 AP0双目显微镜（20-100倍）进行定量分析及壳径测量，分别鉴定并归入3个科（Cavoliniidae科、Cymbuliidae科、Limacinidae科）和2个科（Atlantidae科、Carinidae科）。所有有孔虫从样本分样中湿选，分为大于125μm和小于125μm两组，进行计数并采用高精度微量天平称重。