Collaborative Research: Understanding Environmental and Ecological Controls on Carbon Export and Flux Attenuation near Bermuda

合作研究：了解百慕大附近碳输出和通量衰减的环境和生态控制

• 批准号: 2318940
• 负责人: Hyewon Kim
• 金额: $ 53.36万
• 依托单位: Woods Hole Oceanographic Institution
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2024
• 资助国家: 美国
• 起止时间: 2024-04-01 至 2027-03-31
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2318940&HistoricalAwards=false
• 关键词: Collaborative; Research; Understanding; Environmental; Ecological

The research supported by this award will quantify transport of Carbon into, and Carbon’s fate within, the mesopelagic zone (200 – 1000m depth) at the Bermuda Atlantic Time Series Site (BATS). Chemical, biological, and physical measurements at BATS will be combined with a mechanistic model designed to identify key controls on the export of organic carbon into these intermediate depths. The over-arching goal of the model-data synthesis is to identify and understand controls on the C-flux pathways . In this project, a data-guided model will be used to compare the relative importance of particle sinking, mixing of dissolved organic carbon, and active transport by organisms. Broader impacts include a video game, visits to/from a charter school which serves students from communities underrepresented in Geosciences, supervision of undergraduates via the Woods Hole Partnership Education Program, advising of one graduate student, and of one postdoc. Both PIs are female early-career scientists, one from a group underrepresented in Oceanography.A mechanistic biogeochemical model capable of assimilating key metabolic and physiological rates and stocks of zooplankton and heterotrophic bacteria in the mesopelagic zone (200-1000 m) will be constructed, evaluated, and utilized with the goal of quantifying and comparing fluxes of particle sinking, mixing of dissolved organic carbon (DOC), and active export, by diel vertical migration of zooplankton, of respiratory CO2, particles and DOC. In addition, the fate of organic carbon in the mesopelagic will be characterized by comparing bacterial versus zooplankton respiration. Characterization of the relative magnitudes of these fluxes will provide a view of environmental and ecological controls on export pathways and on the ultimate fate of organic carbon exported from the euphotic to the mesopelagic zone at this location.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该奖项支持的研究将量化碳在百慕大大西洋时间序列（BATS）的碳中的碳和碳的命运（200 - 1000m深度）。蝙蝠处的化学，生物学和物理测量将与旨在识别有机碳出口到这些中间深度的关键控制的机械模型相结合。模型数据综合的架构目标是识别和理解C-Flux途径上的控件。在该项目中，将使用数据引导的模型来比较颗粒下沉，溶解有机碳的混合以及通过生物体主动运输的相对重要性。更广泛的影响包括视频游戏，访问/来自特许学校的访问/访问，该学校为社区中的学生提供服务不足的学生，通过伍兹霍尔·霍尔（Woods Hole）伙伴关系教育计划对本科生的监督，这两个pis都是女性早期的医生科学家，一群来自海洋繁殖的群体和库存量的群体，并库存量不足。将通过量化和比较粒子下沉的通量，溶解有机碳（DOC）的混合以及活性导出的目的，通过对呼吸道的垂直迁移，呼吸器CO2的垂直迁移，呼吸器CO2，颗粒和DOC的垂直迁移。另外，中质碳的命运将以比较细菌与浮游动物呼吸进行比较来表征。这些通量的相对磁性的表征将为出口途径的环境和生态控制提供观点，以及从兴巴的有机碳的最终命运到该位置的中质区域的最终命运。该奖项反映了NSF的法定任务，反映了通过使用基金会的智力效果和广泛的评估来诚实的支持。