The Biogeochemistry of Dissolved Iron-ligands in Marine Cyanobacteria and Seawater
海洋蓝藻和海水中溶解铁配体的生物地球化学
基本信息
- 批准号:1356747
- 负责人:
- 金额:$ 67.27万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2014
- 资助国家:美国
- 起止时间:2014-03-01 至 2018-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Micronutrient trace metals, such as iron and cobalt, are critical to all life on earth, and their availability in the environment can regulate the primary productivity in a region. In the ocean, up to 99.9% of dissolved iron, and to a lesser extent cobalt, are bound by strong organic binding molecules, known as ligands which control what fraction of these metals is available to organisms. To understand carbon and nutrient cycling in many remote areas of the ocean where trace metals limit primary production, it is important to understand the distribution and cycling of ligands. In this study, a researcher at the Woods Hole Oceanographic Institute will use novel techniques to assess the diversity and composition of natural iron and cobalt binding ligands in laboratory cultures of the globally abundant marine cyanobacteria Prochlorococcus and in seawater samples from the South Pacific Subtropical Gyre. This study will add significantly to the interpretation of iron and cobalt availability, and help to link measurements of elemental metal distributions, ligand concentrations and binding strengths, and assessments of the microbial community. Broader Impacts: Results from the project would be incorporated into graduate level organic geochemistry classes taught by the proponent and be made publically available through the Massachusetts Institute of Technology and Woods Hole Oceanographic Institution websites. One graduate student would be supported and trained as part of this project. It is anticipated that undergraduate students would also have the opportunity to participate in the study during the summer months and learn about organic geochemistry, microbial biogeochemistry, and modeling.
微量营养素金属,如铁和钴,对地球上的所有生命都至关重要,它们在环境中的有效性可以调节一个区域的初级生产力。在海洋中,高达99.9%的溶解铁,以及程度较小的钴,都被强大的有机结合分子结合,这些分子被称为配体,控制着这些金属中的哪些部分可供生物利用。要了解海洋中许多痕量金属限制初级生产的偏远地区的碳和营养循环,重要的是了解配体的分布和循环。在这项研究中,伍兹霍尔海洋研究所的一名研究人员将使用新技术来评估全球丰富的海洋蓝藻原氯球藻实验室培养物和南太平洋亚热带环流海水样本中天然铁和钴结合配体的多样性和组成。这项研究将大大增加对铁和钴有效性的解释,并有助于将元素金属分布、配体浓度和结合强度的测量与微生物群落的评估联系起来。更广泛的影响:该项目的成果将被纳入提倡者教授的研究生级别的有机地球化学课,并通过麻省理工学院和伍兹霍尔海洋研究所的网站公开提供。作为该项目的一部分,一名研究生将得到支持和培训。预计本科生还将有机会在暑期参与这项研究,并学习有机地球化学、微生物生物地球化学和建模。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Daniel Repeta其他文献
Daniel Repeta的其他文献
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{{ truncateString('Daniel Repeta', 18)}}的其他基金
Collaborative Research: NSF OCE-BSF: Coupling organic nutrient cycling to methane production in the oligotrophic North Pacific Ocean
合作研究:NSF OCE-BSF:将有机养分循环与贫营养北太平洋甲烷生产耦合
- 批准号:
2241667 - 财政年份:2023
- 资助金额:
$ 67.27万 - 项目类别:
Standard Grant
Collaborative Research: US GEOTRACES GP-17-ANT: Molecular speciation of trace element-ligand complexes in the Southern Ocean and Antarctic shelf
合作研究:US GEOTRACES GP-17-ANT:南大洋和南极陆架微量元素-配体复合物的分子形态
- 批准号:
2048510 - 财政年份:2021
- 资助金额:
$ 67.27万 - 项目类别:
Continuing Grant
Collaborative Research: US GEOTRACES GP-17-OCE: Molecular speciation of trace element-ligand complexes in the South Pacific Ocean
合作研究:US GEOTRACES GP-17-OCE:南太平洋微量元素-配体复合物的分子形态
- 批准号:
2045223 - 财政年份:2021
- 资助金额:
$ 67.27万 - 项目类别:
Standard Grant
MRI: Acquisition of a Nuclear Magnetic Resonance Spectrometer for Marine Biogeochemical Research
MRI:购买核磁共振波谱仪用于海洋生物地球化学研究
- 批准号:
1828581 - 财政年份:2018
- 资助金额:
$ 67.27万 - 项目类别:
Standard Grant
Trace Element Organic Speciation along the US GEOTRACES Pacific Meridional Transect
美国 GEOTRACES 太平洋经向断面沿线的微量元素有机形态
- 批准号:
1736280 - 财政年份:2018
- 资助金额:
$ 67.27万 - 项目类别:
Continuing Grant
Methane, Ethylene, and Dissolved Organic Phosphorus Cycling in the Western North Atlantic Ocean
北大西洋西部的甲烷、乙烯和溶解有机磷循环
- 批准号:
1634080 - 财政年份:2016
- 资助金额:
$ 67.27万 - 项目类别:
Standard Grant
Collaborative Research ETBC: Combined Experimental and Theoretical Study of the Physical Mechanisms Underlying Deposition, Degradation and Preservation of Marine Organic Carbon
合作研究ETBC:海洋有机碳沉积、降解和保存物理机制的实验与理论相结合研究
- 批准号:
0930551 - 财政年份:2009
- 资助金额:
$ 67.27万 - 项目类别:
Standard Grant
Collaborative Research: Characterization of Iron Binding Organic Ligands in Seawater
合作研究:海水中铁结合有机配体的表征
- 批准号:
0751733 - 财政年份:2008
- 资助金额:
$ 67.27万 - 项目类别:
Standard Grant
Nitrogen Fixation and the Production of Dissolved Organic Nitrogen in the North Pacific Ocean
北太平洋的固氮和溶解有机氮的生产
- 批准号:
0224498 - 财政年份:2002
- 资助金额:
$ 67.27万 - 项目类别:
Standard Grant
Acquistion of a Nuclear Magnetic Resonance Spectrometer for Biogeochemical Research
购置核磁共振波谱仪用于生物地球化学研究
- 批准号:
9977015 - 财政年份:1999
- 资助金额:
$ 67.27万 - 项目类别:
Standard Grant
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