Collaborative Research: Influence of pressure on microbial communities in subseafloor sediment at hadal, abyssal, bathyal, and shelf water depths
合作研究:压力对深渊、深海、深海和陆架水深海底沉积物中微生物群落的影响
基本信息
- 批准号:2049515
- 负责人:
- 金额:$ 118.09万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-07-01 至 2024-06-30
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The globe-spanning realm of subseafloor sediment is Earth’s least-explored large biome. This project addresses a fundamental question about the microbial communities that inhabit the subseafloor sedimentary environment – to what extent and in what ways are they adapted to the low temperature, high pressure conditions where they are found? Or, alternatively, are they just accidentally introduced from the shallower and lower-pressure world where the organic matter that feeds them largely originates? This project is examining how these organisms metabolize organic matter in sediments. The project is also advancing the development of a diverse, globally competitive workforce in science, technology, engineering, and mathematics (STEM). It introduces 10 or more students to sea-going research, by including them as shipboard scientists. The project especially focusses on creating and funding opportunities for students from minority groups under-represented in STEM fields, students from economically disadvantaged backgrounds, and students from Puerto Rico, and from multiple educational stages (ranging from community college to graduate school), with diverse STEM interests. Study of samples and data from the expedition are central to graduate and undergraduate research by students from these multiple institutions. The project also supports the broader science community by collecting and providing diverse samples for additional studies, including, but not limited to, studies of deep-water residence time in a deep-sea trench, past oceanographic conditions, and subseafloor microbes. The fundamental objective of this project is to determine how the subseafloor microbial communities and activities across a gradient of oceanic depth zones (sublittoral, bathyal, abyssal, hadal) are impacted by the pressure of the surrounding water. The primary hypothesis being tested is that “microbial communities in subseafloor sediment are adapted for in situ pressure.” The null hypothesis is that these “communities are merely remnant populations introduced from shallower depths and poorly adapted for in situ pressure.” To test these hypotheses, the project compares the subseafloor communities and rates of activity that occur in anoxic subseafloor sediment at ocean depths ranging from 50 to ~8400 meters below sea level in the Puerto Rico Trench region. To collect the samples and shipboard data, the project includes a 26-day coring program. The project interrogates the genomic composition and community metabolic rates of the subseafloor sedimentary communities over this full range of ocean depths. Experiments are being conducted to determine the pressure-dependence of potential processes (sulfate reduction and methanogenesis) and genes that are preferentially expressed at in situ pressures by sublittoral, bathyal, abyssal and hadal subseafloor communities. These results are synthesized to identify the nature and extent of adaptations to in situ pressure in subseafloor communities.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.
遍布全球的海底沉积物领域是地球上探索最少的大型生物群落,该项目解决了有关栖息在海底沉积环境中的微生物群落的一个基本问题——它们在多大程度上以及以何种方式适应低温,或者,它们是否只是从较浅且低压的世界中意外引入,而这些有机物主要来自那里?该项目正在研究这些生物体如何代谢有机物?该项目还促进了科学、技术、工程和数学 (STEM) 领域多元化、具有全球竞争力的劳动力的发展,通过将他们纳入船上科学家项目,吸引了 10 名或更多学生参与海上研究。特别注重为来自 STEM 领域代表性不足的少数群体的学生、来自经济弱势背景的学生和来自波多黎各的学生以及来自多个教育阶段(从社区大学到研究生院)具有不同 STEM 兴趣的学生创造和资助机会。学习来自探险队的样本和数据对于来自多个机构的学生的研究生和本科生研究至关重要,该项目还通过收集和提供用于其他研究的不同样本来支持更广泛的科学界,包括但不限于深度研究。深海海沟中的水停留时间、过去的海洋条件和海底微生物该项目的基本目标是确定海底微生物群落和活动如何跨越海洋深度区域的梯度(近海、深海、深海、深渊)受到周围水压的影响。正在测试的主要假设是“海底沉积物中的微生物群落适应了原位压力。”零假设是这些“群落只是从浅层引入的残余种群”。为了检验这些假设,该项目比较了 50 至 8400 深度的海底缺氧沉积物中的海底群落和活动率。为了收集样本和船上数据,该项目包括一个为期 26 天的取芯计划,该项目调查了整个海洋的海底沉积群落的基因组组成和群落代谢率。正在进行实验以确定潜在过程(硫酸盐还原和产甲烷)的压力依赖性以及在滨海、深海、深海和深海的原位压力下优先表达的基因。综合这些结果来确定海底群落对原位压力的适应的性质和程度。该奖项是 NSF 的法定使命,并且通过使用基金会的智力价值和更广泛的影响审查标准进行评估,被认为值得支持。
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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Steven D'Hondt其他文献
Limits and habitability of subseafloor life in the deep sedimentary biosphere
深层沉积生物圈海底生物的限制和宜居性
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Fumio Inagaki;Kai-Uwe Hinrichs;Steven D'Hondt - 通讯作者:
Steven D'Hondt
日本近海の海底炭化水素資源と炭素循環
日本附近海域海底油气资源与碳循环
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Fumio Inagaki;Kai-Uwe Hinrichs;Steven D'Hondt;中務真人・森本直記・山田重人・荻原直道;稲垣史生 - 通讯作者:
稲垣史生
型類人猿とヒトにおける胎児期を含めた骨格の比較発生研究
类人猿和人类骨骼(包括胎儿阶段)的比较发育研究
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Fumio Inagaki;Kai-Uwe Hinrichs;Steven D'Hondt;中務真人・森本直記・山田重人・荻原直道 - 通讯作者:
中務真人・森本直記・山田重人・荻原直道
大型類人猿とヒトにおける四肢骨の比較発生研究
类人猿与人类四肢骨的比较发育研究
- DOI:
- 发表时间:
2014 - 期刊:
- 影响因子:0
- 作者:
Fumio Inagaki;Kai-Uwe Hinrichs;Steven D'Hondt;中務真人・森本直記・山田重人・荻原直道 - 通讯作者:
中務真人・森本直記・山田重人・荻原直道
Late Cretaceous Precessional Cycles in Double Time: A Warm-Earth Milankovitch Response
双倍时间的白垩纪晚期岁差周期:温暖地球米兰科维奇的响应
- DOI:
10.1126/science.261.5127.1431 - 发表时间:
1993 - 期刊:
- 影响因子:56.9
- 作者:
Jeffrey Park;Steven D'Hondt;John W. King;C. Gibson - 通讯作者:
C. Gibson
Steven D'Hondt的其他文献
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{{ truncateString('Steven D'Hondt', 18)}}的其他基金
Collaborative Research: Exploring the Kermadec Trench --- Residence time, spatial gradients, and insights into ventilation
合作研究:探索克马德克海沟——停留时间、空间梯度和通风见解
- 批准号:
2319547 - 财政年份:2023
- 资助金额:
$ 118.09万 - 项目类别:
Continuing Grant
An Autonomous Ocean Profiling and Water Sampling System for 0 to 11 km of Water Depth
0 至 11 公里水深的自主海洋剖面和水采样系统
- 批准号:
1635466 - 财政年份:2016
- 资助金额:
$ 118.09万 - 项目类别:
Standard Grant
Collaborative Research: IODP Expedition 329 Objective Research on Supply of H2 by Water Radiolysis in Subseafloor Sediment of the South Pacific Gyre
合作研究:IODP Expedition 329 南太平洋环流海底沉积物中水辐射解供氢的客观研究
- 批准号:
1130735 - 财政年份:2011
- 资助金额:
$ 118.09万 - 项目类别:
Standard Grant
Oceanographic control and global distributions of subseafloor microbial life and activity
海底微生物生命和活动的海洋学控制和全球分布
- 批准号:
0752336 - 财政年份:2008
- 资助金额:
$ 118.09万 - 项目类别:
Standard Grant
Collaborative Research: Drilling Site Survey-Life in Subseafloor Sediments of the South Pacific Gyre
合作研究:钻探现场调查——南太平洋环流海底沉积物中的生命
- 批准号:
0527167 - 财政年份:2005
- 资助金额:
$ 118.09万 - 项目类别:
Standard Grant
Acquisition of a Field Laboratory for the Study of Subseafloor life
收购用于研究海底生命的现场实验室
- 批准号:
0421167 - 财政年份:2004
- 资助金额:
$ 118.09万 - 项目类别:
Standard Grant
Planktic Evolution, Carbon Fluxes, and Ecologic Recovery from the Cretaceous-Paleogene Mass Extinction
浮游进化、碳通量和白垩纪-古近纪大规模灭绝的生态恢复
- 批准号:
9814790 - 财政年份:1999
- 资助金额:
$ 118.09万 - 项目类别:
Standard Grant
Sub-Milankovitch Climate Variability in the Tropical Atlantic Sensitivity and Linkages to Orbital Forcing, High Latitudes, and Plio-Pleistocene Boundary Conditions
热带大西洋的亚米兰科维奇气候变率及其与轨道强迫、高纬度和上更新世边界条件的联系
- 批准号:
9510041 - 财政年份:1995
- 资助金额:
$ 118.09万 - 项目类别:
Continuing Grant
Isotopic Tests of Survivorship or Reworking of Planktic Foraminifera across the Cretaceous-Tertiary Boundary of Low and Middle Latitudes
中低纬度白垩纪-第三系边界浮游有孔虫存活或改造的同位素测试
- 批准号:
9406506 - 财政年份:1994
- 资助金额:
$ 118.09万 - 项目类别:
Continuing Grant
The Evolution of Late Cretaceous Climate Cycles
晚白垩世气候循环的演化
- 批准号:
9302483 - 财政年份:1993
- 资助金额:
$ 118.09万 - 项目类别:
Continuing Grant
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