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Title: Biogeochemical controls of surface ocean phosphate

Abstract

Surface ocean phosphate is commonly below the standard analytical detection limits, leading to an incomplete picture of the global variation and biogeochemical role of phosphate. A global compilation of phosphate measured using high-sensitivity methods revealed several previously unrecognized low-phosphate areas and clear regional differences. Both observational climatologies and Earth system models (ESMs) systematically overestimated surface phosphate. Furthermore, ESMs misrepresented the relationships between phosphate, phytoplankton biomass, and primary productivity. Atmospheric iron input and nitrogen fixation are known important controls on surface phosphate, but model simulations showed that differences in the iron-to-macronutrient ratio in the vertical nutrient supply and surface lateral transport are additional drivers of phosphate concentrations. Our study demonstrates the importance of accurately quantifying nutrients for understanding the regulation of ocean ecosystems and biogeochemistry now and under future climate conditions.

Authors:
ORCiD logo [1]; ORCiD logo [2]; ORCiD logo [1];  [3];  [4]; ORCiD logo [5];  [6];  [7]; ORCiD logo [8]; ORCiD logo [8]; ORCiD logo [9]; ORCiD logo [10]; ORCiD logo [11];  [12]; ORCiD logo [13]; ORCiD logo [14]; ORCiD logo [1]
  1. Univ. of California, Irvine, CA (United States)
  2. Bigelow Lab. for Ocean Sciences, East Boothbay, ME (United States)
  3. Univ. of Tasmania (Australia)
  4. National Sun Yat-sen Univ., Kaohsiung (Taiwan)
  5. Old Dominion Univ., Norfolk, VA (United States)
  6. Australian National Univ., Canberra, ACT (Australia)
  7. Univ. of Tokyo (Japan); Soka Univ., Tokyo (Japan)
  8. Tokyo Univ. of Marine Science and Technology, Tokyo (Japan)
  9. Univ. of Hawaii at Manoa, Honolulu, HI (United States)
  10. Japan Fisheries Research and Education Agency, Niigata (Japan)
  11. Chinese Academy of Sciences (CAS), Guangzhou (China)
  12. Xiamen Univ. (China)
  13. Mediterranean Inst. of Oceanography (MIO), Marseille (France)
  14. Plymouth Marine Lab. (United Kingdom)
Publication Date:
Research Org.:
Univ. of California, Irvine, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1612479
Grant/Contract Number:  
SC0016329; SC0016539
Resource Type:
Accepted Manuscript
Journal Name:
Science Advances
Additional Journal Information:
Journal Volume: 5; Journal Issue: 8; Journal ID: ISSN 2375-2548
Publisher:
AAAS
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; Science & Technology - Other Topics

Citation Formats

Martiny, Adam C., Lomas, Michael W., Fu, Weiwei, Boyd, Philip W., Chen, Yuh-ling L., Cutter, Gregory A., Ellwood, Michael J., Furuya, Ken, Hashihama, Fuminori, Kanda, Jota, Karl, David M., Kodama, Taketoshi, Li, Qian P., Ma, Jian, Moutin, Thierry, Woodward, E. Malcolm S., and Moore, J. Keith. Biogeochemical controls of surface ocean phosphate. United States: N. p., 2019. Web. https://doi.org/10.1126/sciadv.aax0341.
Martiny, Adam C., Lomas, Michael W., Fu, Weiwei, Boyd, Philip W., Chen, Yuh-ling L., Cutter, Gregory A., Ellwood, Michael J., Furuya, Ken, Hashihama, Fuminori, Kanda, Jota, Karl, David M., Kodama, Taketoshi, Li, Qian P., Ma, Jian, Moutin, Thierry, Woodward, E. Malcolm S., & Moore, J. Keith. Biogeochemical controls of surface ocean phosphate. United States. https://doi.org/10.1126/sciadv.aax0341
Martiny, Adam C., Lomas, Michael W., Fu, Weiwei, Boyd, Philip W., Chen, Yuh-ling L., Cutter, Gregory A., Ellwood, Michael J., Furuya, Ken, Hashihama, Fuminori, Kanda, Jota, Karl, David M., Kodama, Taketoshi, Li, Qian P., Ma, Jian, Moutin, Thierry, Woodward, E. Malcolm S., and Moore, J. Keith. Thu . "Biogeochemical controls of surface ocean phosphate". United States. https://doi.org/10.1126/sciadv.aax0341. https://www.osti.gov/servlets/purl/1612479.
@article{osti_1612479,
title = {Biogeochemical controls of surface ocean phosphate},
author = {Martiny, Adam C. and Lomas, Michael W. and Fu, Weiwei and Boyd, Philip W. and Chen, Yuh-ling L. and Cutter, Gregory A. and Ellwood, Michael J. and Furuya, Ken and Hashihama, Fuminori and Kanda, Jota and Karl, David M. and Kodama, Taketoshi and Li, Qian P. and Ma, Jian and Moutin, Thierry and Woodward, E. Malcolm S. and Moore, J. Keith},
abstractNote = {Surface ocean phosphate is commonly below the standard analytical detection limits, leading to an incomplete picture of the global variation and biogeochemical role of phosphate. A global compilation of phosphate measured using high-sensitivity methods revealed several previously unrecognized low-phosphate areas and clear regional differences. Both observational climatologies and Earth system models (ESMs) systematically overestimated surface phosphate. Furthermore, ESMs misrepresented the relationships between phosphate, phytoplankton biomass, and primary productivity. Atmospheric iron input and nitrogen fixation are known important controls on surface phosphate, but model simulations showed that differences in the iron-to-macronutrient ratio in the vertical nutrient supply and surface lateral transport are additional drivers of phosphate concentrations. Our study demonstrates the importance of accurately quantifying nutrients for understanding the regulation of ocean ecosystems and biogeochemistry now and under future climate conditions.},
doi = {10.1126/sciadv.aax0341},
journal = {Science Advances},
number = 8,
volume = 5,
place = {United States},
year = {2019},
month = {7}
}

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