Coral Reef Primary Production and Calcification: Quantitative Analysis of Sensitivity to Environmental Forcing using a Control Volume Approach

珊瑚礁初级生产和钙化:使用控制体积方法对环境强迫的敏感性进行定量分析

基本信息

  • 批准号:
    0729236
  • 负责人:
  • 金额:
    $ 44.88万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2007
  • 资助国家:
    美国
  • 起止时间:
    2007-11-01 至 2011-10-31
  • 项目状态:
    已结题

项目摘要

The oceans are currently experiencing both warming and acidification due to the effects of increasing atmospheric CO2 levels, with surface ocean pH expected to drop by at least 0.3 pH units by the year 2100. Coral reefs are especially vulnerable to both factors. In this research, scientists from Stanford University will focus on the effects of acidification, combining novel methods and approaches from the fields of engineering, physical oceanography, and marine biogeochemistry to develop a quantitative understanding of the flow of carbon throughout the physical environment and varied communities of a healthy coral reef. During four field seasons at Heron Island Marine Station, located on the Great Barrier Reef, they will make the first simultaneous and in situ measurements of Net Community Production/Respiration and Net Community Calcification/Dissolution on a large intact coral reef tract by determining water column inorganic carbon system properties along the boundaries of a 3-dimensional control volume (CV). The overall goals of the proposed research are to: 1) Quantify how energy flows between a coral reef and the open ocean, and within different reef environments, by direct, in situ measurements of carbon system fluxes; 2) Describe diurnal, seasonal, and interannual variability in primary production and calcification and their dependency on flow regime and carbonate saturation state; and 3) Develop predictive assessments regarding the interactive response of coral reef systems to ongoing perturbations of global climate and the carbon cycle. To achieve these goals, the PIs will install an array of current meters, wave gauges, and thermistors to determine the hydrodynamic regime within the control volume at a spatial scale of 10 cm and time scale of seconds. Then, using the Reynolds Transport Theorem and water column carbon chemistry data, they will calculate net fluxes through each of the four CV faces and the surface boundary, and thereby determine net carbon fluxes between the benthic community and the overlying water.Broader impacts includes student mentoring, international collaboration, and outreach efforts. Stanford University conducts an overseas study program in Australia that will permit 3 to 5 undergraduate students to participate in this project for their honors thesis. Scientists from developing nations, such as Indonesia, Papua New Guinea, or other western Pacific nations, will also gain experience in geochemical monitoring of the coastal ocean. The PIs will also work with museum experts to develop a museum exhibit on ocean acidification and coral reefs.
由于大气中二氧化碳含量增加的影响,海洋目前正在经历变暖和酸化,预计到2100年海洋表面pH值将下降至少0.3个pH单位。珊瑚礁尤其容易受到这两种因素的影响。在这项研究中,斯坦福大学的科学家将专注于酸化的影响,结合工程、物理海洋学和海洋生物地球化学领域的新方法和方法,对整个物理环境和健康珊瑚礁的不同群落的碳流进行定量了解。在位于大堡礁的Heron岛海洋站的四个野外季节中,他们将通过确定沿三维控制体积(CV)边界的水柱无机碳系统特性,首次同时和现场测量大型完整珊瑚礁带上的净群落生产/呼吸和净群落钙化/溶解。拟议研究的总体目标是:1)通过直接,原位测量碳系统通量,量化珊瑚礁与开放海洋之间以及不同珊瑚礁环境内的能量流动;2)描述初级生产和钙化的日、季节和年际变化及其对流动状态和碳酸盐饱和状态的依赖;3)对珊瑚礁系统对全球气候和碳循环持续扰动的相互作用进行预测评估。为了实现这些目标,pi将安装一系列电流计、波浪计和热敏电阻,以确定在10厘米的空间尺度和秒的时间尺度下控制体积内的水动力状态。然后,利用雷诺输运定理和水柱碳化学数据,他们将计算通过四个CV面和表面边界的净通量,从而确定底栖生物群落与上覆水体之间的净碳通量。更广泛的影响包括学生指导、国际合作和推广工作。斯坦福大学在澳大利亚有一个海外学习项目,将允许3 - 5名本科生参加这个项目,作为他们的荣誉论文。来自印度尼西亚、巴布亚新几内亚或其他西太平洋国家等发展中国家的科学家也将获得对沿海海洋进行地球化学监测的经验。pi还将与博物馆专家合作,开发一个关于海洋酸化和珊瑚礁的博物馆展览。

项目成果

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Robert Dunbar其他文献

Antarctic Cryosphere Evolution Project (AnCEP) : New IODP proposal for transect drilling in the Southern Ocean
南极冰冻圈演化项目 (AnCEP):关于南大洋横断面钻探的新 IODP 提案
  • DOI:
  • 发表时间:
    2012
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Minoru Ikehara;Yoshifumi Nogi;Yusuke Suganuma;Robert Dunbar;Boo-Keun Khim;Tim Naish;Richard Levy;Xavier Crosta;Laura De Santis;Gerhard Kuhn;Thamban Meloth;Samuel Jaccard;Hideki Miura;Hisashi Oiwane;Kota Katsuki;Takuya Itaki;Yasuyuki Nakamu
  • 通讯作者:
    Yasuyuki Nakamu
Reluctance to speak in college classrooms: academic causes and consequences
  • DOI:
    10.1007/s11218-025-10063-3
  • 发表时间:
    2025-04-30
  • 期刊:
  • 影响因子:
    3.200
  • 作者:
    Brooke Erickson;Robert Dunbar;James Winchip;Abraham Ayebo;McKenzie Englund
  • 通讯作者:
    McKenzie Englund
Towards many dimensional wavepacket theory in chemical dynamics
化学动力学中的多维波包理论
  • DOI:
  • 发表时间:
    2012
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Minoru Ikehara;Yoshifumi Nogi;Yusuke Suganuma;Robert Dunbar;Boo-Keun Khim;Tim Naish;et al.;Satoshi Takahashi & Kazuo Takatsuka
  • 通讯作者:
    Satoshi Takahashi & Kazuo Takatsuka
Uranium-series dating and growth characteristics of the deep-sea scleractinian coral: <em>Enallopsammia rostrata</em> from the Equatorial Pacific
  • DOI:
    10.1016/j.gca.2010.01.017
  • 发表时间:
    2010-04-15
  • 期刊:
  • 影响因子:
  • 作者:
    Fanny Houlbrèque;Malcolm McCulloch;Brendan Roark;Tom Guilderson;Anders Meibom;Justine Kimball;Graham Mortimer;Jean-Pierre Cuif;Robert Dunbar
  • 通讯作者:
    Robert Dunbar

Robert Dunbar的其他文献

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{{ truncateString('Robert Dunbar', 18)}}的其他基金

Collaborative Research: RUI: Building a mechanistic understanding of water column chemistry alteration by kelp forests: emerging contributions of foundation species
合作研究:RUI:建立对海带森林水柱化学变化的机械理解:基础物种的新贡献
  • 批准号:
    1737096
  • 财政年份:
    2017
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Standard Grant
Collaborative Research: Cobalamin and Iron Co-Limitation Of Phytoplankton Species in Terra Nova Bay
合作研究:钴胺素和铁对特拉诺瓦湾浮游植物物种的共同限制
  • 批准号:
    1643845
  • 财政年份:
    2017
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Standard Grant
Estimation of Antarctic Ice Melt using Stable Isotopic Analyses of Seawater
利用海水稳定同位素分析估算南极冰融化量
  • 批准号:
    1644118
  • 财政年份:
    2017
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Standard Grant
Collaborative Research: Developing a Continuous Reconstruction of Tropical Pacific Climate Over the Last 500-700 Years: Analysis of Massive Porites Corals from American Samoa
合作研究:对过去 500-700 年热带太平洋气候进行持续重建:对美属萨摩亚大量滨珊瑚的分析
  • 批准号:
    1203999
  • 财政年份:
    2012
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Standard Grant
Collaborative Research: TRacing the fate of Algal Carbon Export in the Ross Sea (TRACERS)
合作研究:追踪罗斯海藻碳输出的命运 (TRACERS)
  • 批准号:
    1142044
  • 财政年份:
    2012
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Standard Grant
Collaborative Research: An Ultra-High Resolution Holocene Climate Record from a Varved Sediment Sequence from the Adelie Coast, Antarctica (IODP Exp 318)
合作研究:来自南极洲阿德利海岸的 Varved 沉积物序列的超高分辨率全新世气候记录 (IODP Exp 318)
  • 批准号:
    1129101
  • 财政年份:
    2011
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Standard Grant
Holocene Climate Change in Southwestern Patagonia: New Insights from Large Lake Paleolimnology
巴塔哥尼亚西南部全新世气候变化:大湖古湖泊学的新见解
  • 批准号:
    1103550
  • 财政年份:
    2011
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Continuing Grant
Participant Support for the First Antarctic Climate Evolution Symposium
首届南极气候演变研讨会参与者支持
  • 批准号:
    0938553
  • 财政年份:
    2009
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Standard Grant
Collaborative Research: The 10th International Symposium on Antarctic Earth Science (ISAES X)
合作研究:第十届南极地球科学国际研讨会(ISAES X)
  • 批准号:
    0639409
  • 财政年份:
    2007
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Standard Grant
Collaborative Research: Pacific Ocean Gyre Exchange and Ventilation Processes: Proxy Development using Deep Sea Corals
合作研究:太平洋环流交换和通风过程:利用深海珊瑚进行代理开发
  • 批准号:
    0551792
  • 财政年份:
    2006
  • 资助金额:
    $ 44.88万
  • 项目类别:
    Continuing Grant

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琉球群岛和夏威夷的更新世珊瑚礁生长史和珊瑚群落变化
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