Metal Speciation and Cyanolbacterial Ecology in the Sargasso Sea

马尾藻海的金属形态和蓝藻生态学

基本信息

  • 批准号:
    9701681
  • 负责人:
  • 金额:
    $ 21.1万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Continuing Grant
  • 财政年份:
    1997
  • 资助国家:
    美国
  • 起止时间:
    1997-03-01 至 2001-02-28
  • 项目状态:
    已结题

项目摘要

ABSTRACT OCE-9618729 / OCE-9701681 Chemical oceanographers and marine microbiologists have known for some time now that trace metals in seawater affect ocean phytoplankton and bacteria differently depending upon the concentrations actual chemical forms, or species, in which the trace metal is present. Similarly, it is also known that such organisms are capable of secreting complexating agents that change trace metal speciation, making them more or less assimilable and more or less toxic. It is known that the very low concentrations at which trace metals are present in surface waters of the central ocean gyres may limit biological production, as has been demonstrated recently for iron. In this project, investigators from the Woods Hole Oceanographic Institution and the Massachusetts Institute of Technology will study these phenomena as a two-way street: water column trace metals affecting oceanic microbial communities and oceanic microbial communities affecting the water column trace metal chemistry. The studies will involve field (Sargasso Sea) and laboratory studies with two species of cyanobacteria and their biogeochemical relationship with cobalt, iron, and copper in the water column. The primary emphasis will be on cobalt because of its importance as a micronutrient and because so little is know about its chemical speciation in the oceanic environment.
摘要 OCE-9618729 / OCE-9701681 化学海洋学家和海洋微生物学家已经知道,海水中的微量金属对海洋浮游植物和细菌的影响不同,这取决于微量金属存在的浓度、实际化学形式或物种。 类似地,还已知这样的生物体能够分泌络合剂, 微量金属形态,使他们更多或 不易被同化,或多或少有毒。 众所周知,地表沃茨中痕量金属的浓度很低 的 中央海洋环流可能会限制 生物生产,如最近已证明的铁。 在 在这个项目中,来自伍兹霍尔海洋研究所和马萨诸塞州理工学院的研究人员将把这些现象作为一条双向道来研究:水柱微量金属影响海洋微生物群落,海洋微生物群落影响水柱微量金属化学。 这些研究将涉及对两种蓝藻的实地(马尾藻海)和实验室研究,以及它们与水柱中钴、铁和铜的生物地球化学关系。 主要重点将放在钴上,因为它作为一种微量营养素的重要性,也因为对它在海洋环境中的化学形态知之甚少。

项目成果

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Sallie Chisholm其他文献

Sallie Chisholm的其他文献

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{{ truncateString('Sallie Chisholm', 18)}}的其他基金

Collaborative Research: EDGE-FGT: Furthering Progress on a Genetic System for the Oceans' Most Abundant Phototrophs
合作研究:EDGE-FGT:海洋最丰富的光养生物遗传系统的进一步进展
  • 批准号:
    2319332
  • 财政年份:
    2023
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Standard Grant
EDGE FGT: Genetic Tools for Picocyanobacteria that Dominate the Oceans
EDGE FGT:主宰海洋的微微蓝藻的遗传工具
  • 批准号:
    2035181
  • 财政年份:
    2021
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Standard Grant
IOS EDGE: Development of genetic tools for the dominant phototroph in the sea
IOS EDGE:开发海洋中优势光养生物的遗传工具
  • 批准号:
    1645061
  • 财政年份:
    2017
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Standard Grant
Membrane vesicles produced by marine bacteria: origins, distributions, and functions
海洋细菌产生的膜囊泡:起源、分布和功能
  • 批准号:
    1356460
  • 财政年份:
    2014
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Standard Grant
Microevolution and population dynamics of Prochlorococcus cells in the ocean: Insights through single-cell genomics
海洋中原绿球藻细胞的微进化和种群动态:通过单细胞基因组学的见解
  • 批准号:
    1145734
  • 财政年份:
    2012
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Standard Grant
Nitrate Assimilation and the Ecology of Prochlorococcus: Features and Implications of Intraspecific Diversity in a Model Marine Phototroph
硝酸盐同化和原绿球藻生态学:模型海洋光养生物种内多样性的特征和意义
  • 批准号:
    1153588
  • 财政年份:
    2012
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Standard Grant
The Ecology of Prochlorococcus: Toward a Model System for Microbial Oceanography
原绿球藻的生态学:建立微生物海洋学模型系统
  • 批准号:
    0425602
  • 财政年份:
    2004
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Standard Grant
Collaborative Research: Southern Ocean Iron Experiment (SOFeX): Mesoscale Iron Fertilization Effects on Plankton Community Structure, Growth and Zooplankton Grazing
合作研究:南大洋铁实验(SOFeX):中尺度铁施肥对浮游生物群落结构、生长和浮游动物放牧的影响
  • 批准号:
    0000330
  • 财政年份:
    2001
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Standard Grant
SGER: Construction of a Whole Genome Micro-Array for the Marine Cyanobacterium Prochlorococcus
SGER:海洋蓝藻原绿球菌全基因组微阵列的构建
  • 批准号:
    0107472
  • 财政年份:
    2001
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Standard Grant
Regulation of Population Dynamics of Prochlorococcus and Synechococcus Ecotypes in Diverse Oceanoic Ecosystems
不同海洋生态系统中原绿球藻和聚球藻生态型种群动态的调控
  • 批准号:
    9820035
  • 财政年份:
    1999
  • 资助金额:
    $ 21.1万
  • 项目类别:
    Continuing Grant

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