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Global subterranean estuaries modify groundwater nutrient loading to the ocean

  • Stephanie J. Wilson
  • , Amy Moody
  • , Tristan McKenzie
  • , M. Bayani Cardenas
  • , Elco Luijendijk
  • , Audrey H. Sawyer
  • , Alicia Wilson
  • , Holly A. Michael
  • , Bochao Xu
  • , Karen L. Knee
  • , Hyung Mi Cho
  • , Yishai Weinstein
  • , Adina Paytan
  • , Nils Moosdorf
  • , Chen Tung Aurthur Chen
  • , Melanie Beck
  • , Cody Lopez
  • , Dorina Murgulet
  • , Guebuem Kim
  • , Mathew A. Charette
  • Hannelore Waska, J. Severino P. Ibánhez, Gwénaëlle Chaillou, Till Oehler, Shin ichi Onodera, Mitsuyo Saito, Valenti Rodellas, Natasha Dimova, Daniel Montiel, Henrietta Dulai, Christina Richardson, Jinzhou Du, Eric Petermann, Xiaogang Chen, Kay L. Davis, Sebastien Lamontagne, Ryo Sugimoto, Guizhi Wang, Hailong Li, Américo I. Torres, Cansu Demir, Emily Bristol, Craig T. Connolly, James W. McClelland, Brenno J. Silva, Douglas Tait, B. S.K. Kumar, R. Viswanadham, V. V.S.S. Sarma, Emmanoel Silva-Filho, Alan Shiller, Alanna Lecher, Joseph Tamborski, Henry Bokuniewicz, Carlos Rocha, Anja Reckhardt, Michael Ernst Böttcher, Shan Jiang, Thomas Stieglitz, Houégnon Géraud Vinel Gbewezoun, Céline Charbonnier, Pierre Anschutz, Laura M. Hernández-Terrones, Suresh Babu, Beata Szymczycha, Mahmood Sadat-Noori, Felipe Niencheski, Kimberly Null, Craig Tobias, Bongkeun Song, Iris C. Anderson, Isaac R. Santos
  • Smithsonian Institution
  • College of William and Mary
  • Enivronmental Protection Agency
  • University of Southern Mississippi
  • University of Gothenburg
  • University of Texas at Austin
  • University of Bergen
  • Ohio State University
  • University of South Carolina
  • University of Delaware
  • Ocean University of China
  • American University Washington DC
  • Inha University
  • Bar-Ilan University
  • University of California at Santa Cruz
  • Leibniz Center for Tropical Marine Research
  • National Sun Yat-sen University
  • University of Oldenburg
  • Texas A&M University-Corpus Christi
  • Seoul National University
  • Woods Hole Oceanographic Institution
  • Instituto de Investigaciones Marinas (IIM-CSIC)
  • Université du Québec à Rimouski
  • Hiroshima University
  • Autonomous University of Barcelona
  • University of Alabama
  • University of Hawai'i at Mānoa
  • East China Normal University
  • Federal Office for Radiation Protection
  • Westlake University
  • Australian Institute of Marine Science
  • CSIRO
  • Fukui Prefectural University
  • Xiamen University
  • Southern University of Science and Technology
  • Consejo Nacional de Investigaciones Científicas y Técnicas
  • The University of Chicago
  • Universidade Federal de Pernambuco
  • Southern Cross University
  • CSIR - National Institute of Oceanography
  • Universidade Federal Fluminense
  • Lynn University
  • Old Dominion University
  • Trinity College Dublin
  • University of Greifswald
  • University of Rostock
  • Europole Mediterraneen de l'Arbois
  • Université d'Abomey-Calavi
  • Université de Bordeaux
  • Universidad del Caribe
  • National Centre for Earth Science Studies
  • Institute of Oceanology Polish Academy of Sciences
  • University of New South Wales
  • Universidade Federal do Rio Grande
  • Moss Landing Marine Laboratories
  • University of Connecticut

Research output: Contribution to journalLetterpeer-review

49 Scopus citations

Abstract

Terrestrial groundwater travels through subterranean estuaries before reaching the sea. Groundwater-derived nutrients drive coastal water quality, primary production, and eutrophication. We determined how dissolved inorganic nitrogen (DIN), dissolved inorganic phosphorus (DIP), and dissolved organic nitrogen (DON) are transformed within subterranean estuaries and estimated submarine groundwater discharge (SGD) nutrient loads compiling > 10,000 groundwater samples from 216 sites worldwide. Nutrients exhibited complex, nonconservative behavior in subterranean estuaries. Fresh groundwater DIN and DIP are usually produced, and DON is consumed during transport. Median total SGD (saline and fresh) fluxes globally were 5.4, 2.6, and 0.18 Tmol yr−1 for DIN, DON, and DIP, respectively. Despite large natural variability, total SGD fluxes likely exceed global riverine nutrient export. Fresh SGD is a small source of new nutrients, but saline SGD is an important source of mostly recycled nutrients. Nutrients exported via SGD via subterranean estuaries are critical to coastal biogeochemistry and a significant nutrient source to the oceans.

Original languageEnglish
Pages (from-to)411-422
Number of pages12
JournalLimnology and Oceanography Letters
Volume9
Issue number4
DOIs
StatePublished - Aug 2024

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