Environmental Controls of Thaumarchaeota Populations in Southeastern Coastal Waters
Environmental Controls of Thaumarchaeota Populations in Southeastern Coastal Waters
批准号:
1335838
负责人:
James Hollibaugh
金额:
$72.76万
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
项目状态:
已结题
起止时间:
2014-01-01 至 2016-12-31
中文摘要
Thaumarchaeota是一种在中层远洋开放海洋环境中丰富的海洋微生物,其仲夏水华是美国东南部沿海沃茨微生物群落动态的一个常规特征。这些水华似乎对氮的地球化学循环产生重大影响,因为它们导致氨氧化与亚硝酸盐氧化和反硝化作用暂时脱钩,并可能导致强大的温室气体一氧化二氮的产生增加。为了进一步了解这些水华,来自格鲁吉亚大学的研究人员将进行一项采样计划,结合实验操作和基因转录分析,以确定控制水华动态的因素。从这项研究的结果将加强努力,通过沿海地区的氮循环模型。更广泛的影响:这项研究将提供科学的培训,本科生,研究生和博士后的微生物地球化学。研究人员还将让当地K-12教师与GCE-LTER合作,将科学研究融入他们的课堂。
英文摘要
Mid-summer blooms of Thaumarchaeota, an abundant type of Archaea in meso-pelagic, open ocean environments, are a regular feature of microbial community dynamics in Southeastern U.S. coastal waters. These blooms appear to have significant consequences for the nitrogen geochemical cycle as they result in the temporary uncoupling of ammonia oxidation from nitrite oxidation and denitrification, and may cause enhanced production of the powerful greenhouse gas nitrous oxide. In order to further understanding of these blooms, researchers from the University of Georgia will conduct a sampling program coupled with experimental manipulations and analyses of gene transcription to identify the factors controlling the dynamics of the bloom. Results from this study will enhance efforts to model nitrogen cycling through the coastal zone.Broader Impacts: This study will provide scientific training to undergraduate, graduate, and post-doctoral students on microbial geochemistry. The researchers will also engage local K-12 teachers in collaboration with the GCE-LTER to integrate scientific research into their classrooms.
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Collaborative Research: Chemoautotrophy in Antarctic Bacterioplankton Communities Supported by the Oxidation of Urea-derived Nitrogen
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批准号:1643466
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项目类别:Standard Grant
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资助金额:$26.71万
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财政年份:2017
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负责人:James Hollibaugh
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依托单位:
Collaborative Research: Direct Oxidation of Organic Nitrogen by Marine Ammonia Oxidizing Organisms
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批准号:1538677
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项目类别:Standard Grant
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资助金额:$48.08万
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财政年份:2015
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负责人:James Hollibaugh
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依托单位:
Collaborative Research: The Contribution of Polyamines to N and C cycling in Marine Systems
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批准号:1029742
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项目类别:Standard Grant
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资助金额:$18.99万
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财政年份:2010
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负责人:James Hollibaugh
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依托单位:
Role of Thioarsenic Compounds in As(III) Oxidation in an Alkaline Lake
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批准号:0952271
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项目类别:Standard Grant
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资助金额:$42.3万
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财政年份:2010
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负责人:James Hollibaugh
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依托单位:
Ammonia Oxidation Versus Heterotrophy in Crenarchaeota Populations from Marine Environments West of the Antarctic Peninsula
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批准号:0838996
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项目类别:Standard Grant
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资助金额:$64.0万
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财政年份:2009
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负责人:James Hollibaugh
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依托单位:
EAGER: Did Oxygenic Photosynthesis Cause Marine Group 1 Crenarchaeota to Take a Dive?
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批准号:0943278
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项目类别:Standard Grant
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资助金额:$9.6万
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财政年份:2009
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负责人:James Hollibaugh
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依托单位:
Collaborative Research: RUI -- Response of Nitrifying Bacteria to Fluctuating Hypoxia in Estuarine and Marine Sediments
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批准号:0352216
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项目类别:Standard Grant
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资助金额:$22.66万
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财政年份:2004
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负责人:James Hollibaugh
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依托单位:
Distribution And Ecology Of Ammonia Oxidizing Bacteria In The Palmer LTER Study Area
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批准号:0234249
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项目类别:Standard Grant
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资助金额:$0.0万
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财政年份:2003
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负责人:James Hollibaugh
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依托单位:
LTER - Georgia Land/Ocean Margin Ecosystem
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批准号:9982133
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项目类别:Continuing Grant
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资助金额:$420.0万
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财政年份:2000
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负责人:James Hollibaugh
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依托单位:
Collaborative Research: Microbial Observatory at an Alkaline, Hypersaline, Meromictic Lake (Mono Lake, California).
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批准号:9977886
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项目类别:Continuing Grant
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资助金额:$73.77万
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财政年份:1999
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负责人:James Hollibaugh
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依托单位:
Diversity and Metabolic Capabilities of Arctic Bacterial Communities: Participation in SCICEX
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批准号:9809971
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项目类别:Continuing Grant
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资助金额:$16.53万
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财政年份:1998
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负责人:James Hollibaugh
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依托单位:
Diversity and Metabolic Capabilities of Arctic Bacterioplankton Communities
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批准号:9796261
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项目类别:Continuing Grant
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资助金额:$16.1万
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财政年份:1997
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负责人:James Hollibaugh
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依托单位:
Diversity and Metabolic Capabilities of Arctic Bacterioplankton Communities
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批准号:9625131
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项目类别:Continuing Grant
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资助金额:$9.03万
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财政年份:1996
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负责人:James Hollibaugh
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依托单位:
Planning Activities: Romberg Tiburon Center, San Francisco State University
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批准号:9512558
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项目类别:Standard Grant
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资助金额:$2.5万
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财政年份:1995
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负责人:James Hollibaugh
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依托单位:
Diversity and Metabolic Capabilities of Arctic Bacterioplankton Communities
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批准号:9500237
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项目类别:Continuing Grant
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资助金额:$16.0万
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财政年份:1995
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负责人:James Hollibaugh
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依托单位:
Acquisition of an autoanalyzer
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批准号:9217198
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项目类别:Standard Grant
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资助金额:$3.97万
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财政年份:1994
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负责人:James Hollibaugh
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依托单位:
An Investigation of the Relationship Between Community Composition and Metabolic Capabilities of Coastal Bacterioplankton Communities
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批准号:9315639
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项目类别:Continuing Grant
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资助金额:$33.0万
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财政年份:1993
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负责人:James Hollibaugh
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依托单位:
Significance of Bacterial Biomass & Production in Organic Matter Cycling in the Arctic:
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批准号:9113934
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项目类别:Standard Grant
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资助金额:$3.64万
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财政年份:1991
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负责人:James Hollibaugh
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依托单位:
Significance of Bacterial Exoenzymes in Organic Matter Cycling in the Antarctic Ocean
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批准号:8916524
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项目类别:Continuing Grant
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资助金额:$12.0万
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财政年份:1990
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负责人:James Hollibaugh
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依托单位:
LMER Site for the Study of Biogeochemical Reactions in Estuaries at Tomales Bay, California
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批准号:8914921
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项目类别:Continuing Grant
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资助金额:$67.94万
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财政年份:1989
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负责人:James Hollibaugh
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依托单位:
海外基金