Collaborative Research: Understanding the Massive Phytoplankton Blooms over the Australian-Antarctic Ridge

合作研究:了解澳大利亚-南极海脊上空大量浮游植物的繁殖

基本信息

  • 批准号:
    2135185
  • 负责人:
  • 金额:
    $ 50.89万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2022
  • 资助国家:
    美国
  • 起止时间:
    2022-09-01 至 2025-08-31
  • 项目状态:
    未结题

项目摘要

Phytoplankton blooms throughout the world’s oceans support critical marine ecosystems and help remove carbon dioxide (CO2) from the atmosphere. Traditionally, it has been assumed that phytoplankton blooms in the Southern Ocean are stimulated by iron from either nearby land or sea-ice. However, recent work demonstrates that hydrothermal vents may be an additional iron source for phytoplankton blooms. This enhancement of phytoplankton productivity by different iron sources supports rich marine ecosystems and leads to the sequestration of carbon in the deep ocean. Our proposed work will uncover the importance of hydrothermal activity in stimulating a large phytoplankton bloom along the southern boundary of the Antarctic Circumpolar Current just north of the Ross Sea. It will also lead towards a better understanding of the overall impact of hydrothermal activity on the carbon cycle in the Southern Ocean, which appears to trigger local hotspots of biological activity which are a potential sink for atmospheric CO2. This project will encourage the participation of underrepresented groups in ocean sciences, as well as providing educational opportunities for high school and undergraduate students, through three different programs. Stanford University’s Summer Undergraduate Research in Geoscience and Engineering (SURGE) program provides undergraduates from different US universities and diverse cultural backgrounds the opportunity to spend a summer doing a research project at Stanford. The Stanford Earth Summer Undergraduate Research Program (SESUR) is for Stanford undergraduates who want to learn more about environmental science by performing original research. Finally, Stanford’s School of Earth, Energy, and Environmental Sciences High School Internship Program enables young scientists to serve as mentors, prepares high school students for college, and serves to strengthen the partnership between Stanford and local schools. Students present their results at the Fall AGU meeting as part of the AGU Bright STaRS program. This project will form the basis of at least two PhD dissertations. The Stanford student will participate in Stanford’s Woods Institute Rising Environmental Leaders Program (RELP), a year-round program that helps graduate students hone their leadership and communication skills to maximize the impact of their research. The graduate student will also participate in Stanford’s Grant Writing Academy where they will receive training in developing and articulating research strategies to tackle important scientific questions. This interdisciplinary program combines satellite and ship-based measurements of a large poorly understood phytoplankton bloom (the AAR bloom) in the northwestern Ross Sea sector of the Southern Ocean with a detailed modeling study of the physical processes linking deep dissolved iron (DFe) reservoirs to the surface phytoplankton bloom. Prior to the cruise, we will implement a numerical model (CROCO) for our study region so that we can better understand the circulation, plumes, turbulence, fronts, and eddy field around the AAR bloom and how they transport and mix hydrothermally produced DFe vertically. Post cruise, observations of the vertical distribution of 3He (combined with DMn and DFe), will be used as initial conditions for a passive tracer in the model, and tracer dispersal will be assessed to better quantify the role of the various turbulent processes in upwelling DFe-rich waters to the upper ocean. The satellite-based component of the program will characterize the broader sampling region before, during, and after our cruise. During the cruise, our automated software system at Stanford University will download and process images of sea ice concentration, Chl-a concentration, sea surface temperature (SST), and sea surface height (SSH) and send them electronically to the ship. Operationally, our goal is to use all available satellite data and preliminary model results to target shipboard sampling both geographically and temporally to optimize sampling of the AAR bloom. We will use available BGC-Argo float data to help characterize the AAR bloom. In collaboration with SOCCOM, we will deploy additional BGC-Argo floats (if available) during our transit through the study area to allow us to better characterize the bloom. The centerpiece of our program will be a 40-day process study cruise in austral summer. The cruise will consist of an initial “radiator” pattern of hydrographic surveys/sections along the AAR followed by CTDs to selected submarine volcanoes. When/if eddies are identified, they will be sampled either during or after the initial surveys. The radiator pattern, or parts thereof, will be repeated 2-3 times. Hydrographic survey stations will include vertical profiles of temperature, salinity, oxygen, oxidation-reduction potential, light scatter, and PAR (400-700 nm). Samples will be collected for trace metals, ligands, 3He, and total suspended matter. Where intense hydrothermal activity is identified, samples for pH and total CO2 will also be collected to characterize the hydrothermal system. Water samples will be collected for characterization of macronutrients, and phytoplankton physiology, abundance, species composition, and size. During transits, we will continuously measure atmospheric conditions, current speed and direction, and surface SST, salinity, pCO2, and fluorescence from the ship’s systems to provide detailed maps of these parameters. The ship will be used as a platform for conducting phytoplankton DFe bioassay experiments at key stations throughout the study region both inside and outside the bloom. We will also perform detailed comparisons of algal taxonomic composition, physiology, and size structure inside and outside the bloom to determine the potential importance of each community on local biogeochemistry.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.

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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Joseph Resing其他文献

マリアナ弧NW Rota-1火山の安山岩マグマ
马里亚纳弧西北 Rota-1 火山的安山岩岩浆
  • DOI:
  • 发表时间:
    2008
  • 期刊:
  • 影响因子:
    0
  • 作者:
    R W Embley;William Chadwick;Edward Baker;David Butterfield;Joseph Resing;Cornel de Ronde;Verena Tunnicliffe;John Lupton;S.Kim Juniper;Kenneth Rubin;Robert Stern;Geoff Lebon;Ko-ichi Nakamura;Susan Merle;James Hein;Douglas Wiens;Yoshihiko Ta;Yoshihiko Tamura;Yoshihiko Tamura;Yoshihiko Tamura;田村 芳彦
  • 通讯作者:
    田村 芳彦
Primary andesite melts; new insight from NW Rota-1 volcano
原生安山岩熔体;
  • DOI:
  • 发表时间:
    2008
  • 期刊:
  • 影响因子:
    0
  • 作者:
    R W Embley;William Chadwick;Edward Baker;David Butterfield;Joseph Resing;Cornel de Ronde;Verena Tunnicliffe;John Lupton;S.Kim Juniper;Kenneth Rubin;Robert Stern;Geoff Lebon;Ko-ichi Nakamura;Susan Merle;James Hein;Douglas Wiens;Yoshihiko Ta;Yoshihiko Tamura;Yoshihiko Tamura;Yoshihiko Tamura;田村 芳彦;田村芳彦;Yoshihiko Tamura
  • 通讯作者:
    Yoshihiko Tamura
Primary andesite melts ; new insight from NW Rota-1 volcano
原生安山岩熔体;
  • DOI:
  • 发表时间:
    2008
  • 期刊:
  • 影响因子:
    0
  • 作者:
    R W Embley;William Chadwick;Edward Baker;David Butterfield;Joseph Resing;Cornel de Ronde;Verena Tunnicliffe;John Lupton;S.Kim Juniper;Kenneth Rubin;Robert Stern;Geoff Lebon;Ko-ichi Nakamura;Susan Merle;James Hein;Douglas Wiens;Yoshihiko Ta;Yoshihiko Tamura;Yoshihiko Tamura;Yoshihiko Tamura;田村 芳彦;田村芳彦;Yoshihiko Tamura;宮下純夫・足立佳子・海野 進;村上龍太朗・菅家奈未・高澤栄;Yoshihiko Tamura
  • 通讯作者:
    Yoshihiko Tamura
Oligocene IBM
渐新世IBM
  • DOI:
  • 发表时间:
    2009
  • 期刊:
  • 影响因子:
    0
  • 作者:
    R W Embley;William Chadwick;Edward Baker;David Butterfield;Joseph Resing;Cornel de Ronde;Verena Tunnicliffe;John Lupton;S.Kim Juniper;Kenneth Rubin;Robert Stern;Geoff Lebon;Ko-ichi Nakamura;Susan Merle;James Hein;Douglas Wiens;Yoshihiko Ta;Yoshihiko Tamura
  • 通讯作者:
    Yoshihiko Tamura
海洋地殻の構造と形成プロセス
洋壳的结构和形成过程
  • DOI:
  • 发表时间:
    2008
  • 期刊:
  • 影响因子:
    0
  • 作者:
    R W Embley;William Chadwick;Edward Baker;David Butterfield;Joseph Resing;Cornel de Ronde;Verena Tunnicliffe;John Lupton;S.Kim Juniper;Kenneth Rubin;Robert Stern;Geoff Lebon;Ko-ichi Nakamura;Susan Merle;James Hein;Douglas Wiens;Yoshihiko Ta;Yoshihiko Tamura;Yoshihiko Tamura;Yoshihiko Tamura;田村 芳彦;田村芳彦;Yoshihiko Tamura;宮下純夫・足立佳子・海野 進
  • 通讯作者:
    宮下純夫・足立佳子・海野 進

Joseph Resing的其他文献

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{{ truncateString('Joseph Resing', 18)}}的其他基金

Collaborative Research: US GEOTRACES GP17-ANT: Tracing Inputs and Transport of Aluminum, Manganese, and Iron from the Amundsen Sea Sector of the Antarctic Continental Margin
合作研究:美国 GEOTRACES GP17-ANT:追踪南极大陆边缘阿蒙森海区铝、锰和铁的输入和运输
  • 批准号:
    2148091
  • 财政年份:
    2022
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Continuing Grant
Collaborative Research: US GEOTRACES GP17-OCE: Shipboard Measurements of Dissolved Aluminum, Iron, and Manganese – Tracing Inputs to the South Pacific Gyre and Southern Ocean
合作研究:美国 GEOTRACES GP17-OCE:溶解铝、铁和锰的船上测量 — 追踪南太平洋环流和南大洋的输入
  • 批准号:
    2122886
  • 财政年份:
    2021
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Are Low-Temperature Hydrothermal Vents an Important but Overlooked Source of Stabilized Dissolved Iron to the Ocean?
合作研究:低温热液喷口是否是海洋稳定溶解铁的重要但被忽视的来源?
  • 批准号:
    1756402
  • 财政年份:
    2018
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Trace Metal Deposition And Cycling In The North Atlantic On The 2013 CLIVAR/Repeat Hydrography A16N Expedition
合作研究:2013 CLIVAR/Repeat Hydrography A16N 探险中北大西洋的微量金属沉积和循环
  • 批准号:
    1260376
  • 财政年份:
    2013
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Standard Grant
Collaborative Research: US GEOTRACES Pacific Section-Shipboard Al, Mn and Fe
合作研究:美国GEOTRACES太平洋剖面-船载铝、锰和铁
  • 批准号:
    1237011
  • 财政年份:
    2012
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Dynamics of eruptive plumes above a submarine arc volcano
合作研究:海底弧火山上方喷发羽流的动力学
  • 批准号:
    1232431
  • 财政年份:
    2012
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Standard Grant
Collaborative Research: A Submarine Eruption on the North East Lau Spreading Center, a RAPID Response Effort
合作研究:刘东北扩散中心的一次潜艇喷发,快速响应工作
  • 批准号:
    0934660
  • 财政年份:
    2009
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Rapid Response to a Submarine Eruption at W. Mata Volcano
合作研究:对西马塔火山海底喷发的快速反应
  • 批准号:
    0930025
  • 财政年份:
    2009
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Global Ocean Survey of Dissolved Iron and Aluminum and Aerosol Iron and Aluminum Solubility Supporting the CLIVAR Repeat Hydrography Project (2007-2009).
合作研究:溶解铁和铝以及气溶胶铁和铝溶解度的全球海洋调查支持 CLIVAR 重复水文学项目(2007-2009 年)。
  • 批准号:
    0649505
  • 财政年份:
    2007
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Standard Grant
Collaborative Research: Investigating the Distribution of Hydrothermal Activity and its Geologic and Geophysical Controls at the Lau Integrated Studies Site
合作研究:调查刘综合研究场的热液活动分布及其地质和地球物理控制
  • 批准号:
    0732372
  • 财政年份:
    2007
  • 资助金额:
    $ 50.89万
  • 项目类别:
    Continuing Grant

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