SGER: Natural N and C Isotope Biogeochemistry during a Large-Scale, Open-Ocean Fe Fertilization Experiment in the N.W. Pacific (SEEDS II)

来自马萨诸塞州大学的一名研究人员将参加即将在西亚北极太平洋环流进行的日本铁施肥实验，称为SEEDS II。 这名调查员参加航行将增加氮和碳同位素地球化学领域的专门知识，以了解铁刺激产生的有机物质的命运。 具体而言，研究人员计划分析施肥区内外收集的样本的以下参数：（1）溶解无机碳，硝酸盐，铵和溶解有机物;（2）总悬浮颗粒有机物和粒度分级;（3）中型和大型浮游动物;（4）通过原位大体积过滤收集的沉降颗粒有机物;（5）悬浮颗粒有机物;（6）悬浮颗粒有机物;（7）悬浮颗粒有机物。（5）硅藻类，包括整体和硅藻壳结合的有机物，以及大型浮游植物。 这项研究的结果将使研究人员记录的途径和命运的施肥补丁内产生的增强有机碳的生产，从而进一步了解铁施肥对海洋生物泵的影响。

ABSTRACTOCE-0353311An investigator from the University of Massachusetts will participate in an upcoming Japanese Fe fertilization experiment called SEEDS II taking place in the Western Subarctic Pacific Gyre. Participation of this investigator in the cruise will add expertise in the area of nitrogen and carbon isotopic biogeochemistry to understand the fate of the Fe-stimulated production of organic matter. Specifically, the investigator plans to analyze samples collected both inside and outside of the fertilized patch for the following parameters: (1) dissolved inorganic carbon, nitrate, ammonium and dissolved organic matter; (2) total and size fractionated suspended particulate organic matter; (3) meso- and macrozooplankton; (4) sinking particulate organic matter collected by in-situ large volume filtration; and (5) diatoms, both whole and frustule bound organic matter, as well as large phytoplankton. Results from this study will allow the investigator to document the pathways and fate of the resulting enhanced organic carbon production within the fertilized patch thereby furthering our understanding of the influence of Fe fertilization on the oceanic biological pump.