OB020
Multi-tracer approaches to understanding and quantifying marine biogeochemical processes

Session ID#: 256137

Session Description:
There is a long history on the use of multiple tracers to investigate and quantify biogeochemical processes in the oceans, from the use of carbon, nutrient and trace element stoichiometries to demonstrate uptake and regeneration processes, to studies of the microbial impacts on trace element speciation and distributions, to the coupling of natural radionuclide cycling with particle chemistry to quantify fluxes, among many others. Our understanding of the rates and mechanisms of trace element and isotope (TEI) input, biogeochemical cycling, and removal is improved by multi-tracer data from basin-wide research cruises, data from more focused process studies, and synthesis and modeling of these data. In addition to contributions in these topical areas, we particularly encourage submissions that integrate multiple tracers or isotope systems to provide constraints on biogeochemical processes in the oceans and that highlight the benefits of multi-proxy approaches.
Co-Sponsor(s):
  • Coastal and Estuarine Biology and Biogeochemistry -
  • Organic and Inorganic Chemical Tracers in Modern and Paleoenvironments -
Index Terms:

4805 Biogeochemical cycles, processes, and modeling [OCEANOGRAPHY: CHEMICAL]
4808 Chemical tracers [OCEANOGRAPHY: CHEMICAL]
4860 Radioactivity and radioisotopes [OCEANOGRAPHY: CHEMICAL]
4875 Trace elements [OCEANOGRAPHY: CHEMICAL]
Student/Early Career Chair:  Anne Leal, Lamont-Doherty Earth Observatory at Columbia University, Palisades, United States
Primary Chair:  William M Landing, Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States
Co-Chair:  Hélène Planquette, IUEM Institut Universitaire Européen de la Mer, LEMAR (CNRS, Univ Brest, IRD, Ifremer), Plouzané, France
 
Combining beryllium and thorium isotopes to quantify the atmospheric fluxes of trace elements from sea ice melting to the ocean (1867420)
Bleuenn Prijac1, Mélanie Grenier1, Vincent Regard2, Sandrine Choy2, Sara Fleury1 and Mélanie Grenier, (1)LEGOS (CNRS/Toulouse University/CNES/IRD), Toulouse, France, (2)Geoscience Environnement Toulouse, CNRS, IRD & Université de Toulouse, Toulouse, France
 
Zooming in Arctic sea ice and snow cover: what can we learn from beryllium and thorium isotopes? (1881676)
Mélanie Grenier1, Bleuenn Prijac1, Tia Anderlini2, Pieter Van Beek1, Thomas Zambardi1, Marc Souhaut1, Catherine Pradoux1 and Francois Lacan1, (1)LEGOS (CNRS/Toulouse University/CNES/IRD), Toulouse, France, (2)University of Victoria, Victoria, Canada
 
Closing the Arctic Ocean Pb budget. (1890346)
Stephan Krisch, Technical University of Braunschweig, Institute of Geoecology, Braunschweig, Germany, Eric P Achterberg, GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, Edward A Boyle, Massachusetts Institute of Technology, Cambridge, MA, United States, Harald Biester, Technical University of Braunschweig, Institute for Geoecology, Environmental Geochemistry Group, Braunschweig, Germany, Manuel Colombo, Virginia Institute of Marine Science, Gloucester Point, United States, Jay T. Cullen, University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada, Rob Middag, Royal Netherlands Institute for Sea Research, Department of Ocean Systems, Den Burg, Netherlands, Arianna Olivelli, Flanders Marine Institute (VLIZ), Ostend, Belgium and Birgit Rogalla, British Antarctic Survey, Cambridge, United Kingdom
 
Nickel and Nickel Stable Isotopes in the South Pacific Subtropical Gyre: Data from GP17-OCE (2006095)
Cat Odendahl1, Adam Ross2, Shun-Chung Yang2, Kristie Dick3, Dylan Halbeisen4, Zhou Liang5, Leo Mahieu6, Annaliese Charlotte Spence Meyer7, Kristen N Buck8, Tim Conway4, Jessica N Fitzsimmons3, Angela Knapp9, Mak A Saito10 and Seth John2, (1)University of Southern California, Ocean Science, Los Angeles, United States, (2)University of Southern California, Department of Earth Sciences, Los Angeles, United States, (3)Texas A&M University College Station, Oceanography, College Station, United States, (4)University of South Florida, College of Marine Science, St. Petersburg, United States, (5)Carnegie Institute for Science, Global Ecology, Pasadena, United States, (6)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, OR, United States, (7)University of Victoria, School of Earth and Ocean Sciences, Victoria, BC, Canada, (8)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States, (9)Texas A&M University College Station, Department of Oceanography, College Station, United States, (10)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, MA, United States
 
Modelling Surface Nitrate Drawdown and Nitrate Stable Isotope (δ15NNO3 and δ18ONO3) Distributions to Constrain Rates of New Production, Nitrate Resupply, and Nitrification in the Labrador Sea (2007690)
Britton Dempsey and Carolyn Buchwald, Dalhousie University, Department of Oceanography, Halifax, NS, Canada
 
Pervasive contamination of the remote South Pacific Ocean with anthropogenic zinc (2008431)
Tal Benaltabet1, Kathleen Gosnell2, Gregory F. de Souza1, Dominik Jasinski2, Jörg Rickli1, Edel Mary O'Sullivan2, Zvi Steiner2,3, Eric P Achterberg4 and Derek Vance1, (1)ETH Zurich, Earth and Planetary Sciences, Zurich, Switzerland, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)Hebrew University of Jerusalem, The Fredy & Nadine Herrmann Institute of Earth Sciences, Jerusalem, Israel, (4)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany
 
Dissolved and Particulate Methylated mercury in a Highly Productive Area of the Southern Ocean (2009411)
Harald U Biester1, Marta Pérez Rodríguez2, Adelina Calean2, Marco Benkhettab Sindlev3, Florian Lüskow4, Ingrid Stemac5, Scarlett Trimborn6, Aurélie Dufour7, Natalia Torres-Rodriguez8, Lars-Eric Heimbürger8, Frank Wenzhofer9 and Ronnie N Glud10, (1)TU Braunschweig, Institute for Geoecology, Environmental Geochemistry Group, Braunschweig, Germany, (2)Technical University of Braunschweig, Institute for Geoecology, Environmental Geochemistry Group, Braunschweig, Germany, (3)University of Southern Denmark, Odense, Denmark, HADAL & Nordcee, Department of Biology, Odense, Denmark, (4)Uppsala University, Department of Earth Sciences, Natural Resources and Sustainable Development, Campus Gotland,, Visby, Sweden, (5)Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Division of Marine Geochemistry,, Bremerhaven, Germany, (6)Alfred Wegener Institute, Helmholtz-Centre for Polar and Marine Research, Ecological Chemistry, Bremerhaven, Germany, (7)8Aix Marseille Université, CNRS/INSU, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO),, Marseille, France, (8)Aix Marseille Université, CNRS/INSU, Université de Toulon, IRD, Mediterranean Institute of Oceanography (MIO), Marseille, France, (9)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Joint Research Group for Deep-Sea Ecology and Technology, Bremerhaven, Germany, (10)University of Southern Denmark, Department of Biology, Odense M, Denmark
 
Unveiling Oceanic Biogenic Metal Quotas using particulate Field Data (2009801)
Antoine Ringard1, Thomas James Ryan-Keogh2, Eva Bucciarelli3, Camille Richon4, Olivier Aumont5, Stéphane Blain6, Robert M Sherrell7, Benjamin S Twining8, Eric P Achterberg9, Corentin Baudet10, Thomas Browning9, Colombo Manuel11, Susanne Fietz12, Jinxuan Li13, Angela Milne14, Dr. Johannes J Viljoen15 and Hélène Planquette10, (1)IUEM Institut Universitaire Européen de la Mer, LEMAR UMR (CNRS, Univ Brest, IRD, Ifremer), Plouzané, France, (2)Council for Scientific and Industrial Research (CSIR), Southern Ocean Carbon-Climate Observatory (SOCCO), Cape Town, South Africa, (3)LEMAR (CNRS, Univ Brest, IRD, Ifremer), Plouzané, France, (4)CNRS, Laboratoire des Sciences de l'Environnement Marin (LEMAR), Plouzané, France, (5)LOPS, Laboratoire d'Océanographie Physique et Spatiale, LOPS, CNRS, Ifremer, IRD, UBO, Rue Dumont D'Urville, 29280, Plouzané, France, Paris, France, (6)Sorbonne Université, Laboratoire d'Océanographie Microbienne, Banyuls sur mer, France, (7)Rutgers University, Department of Marine and Coastal Sciences and Department of Earth and Planetary Sciences, Piscataway, United States, (8)Bigelow Laboratory for Ocean Sciences, East Boothbay, United States, (9)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, (10)IUEM Institut Universitaire Européen de la Mer, LEMAR (CNRS, Univ Brest, IRD, Ifremer), Plouzané, France, (11)Virginia Institute of Marine Science, William & Mary, Gloucester Point, United States, (12)Stellenbosch University, Department of Earth Sciences, Faculty of Science, Stellenbosch, South Africa, (13)Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, United States, (14)University of Plymouth, Plymouth, United Kingdom, (15)University of Exeter, Department of Earth and Environmental Science, Penryn, United Kingdom
 
Tracing carbon export and burial in the Labrador Sea using multi-isotope thorium fluxes (2010459)
Madeline Healey1, Anne Leal2, Matthias Moros3 and Stephanie Kienast1, (1)Dalhousie University, Department of Oceanography, Halifax, NS, Canada, (2)Columbia University, Department of Earth and Environmental Sciences, New York, United States, (3)Leibniz Institute for Baltic Sea Research Warnemuende (IOW), Rostock, Germany
 
First Insights into Zooplankton Fe:C Ratios in the Southern Ocean and Potential Drivers (2010674)
Knut Heinatz1, Lavenia Ratnarajah2, Kerrie Swadling1, Scott Meyerink1, Ashley T Townsend3 and Andrew R Bowie1, (1)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (2)University College London, Department of Earth Sciences, London, United Kingdom, (3)University of Tasmania, Central Science Laboratory, Hobart, TAS, Australia
 
Iron and Manganese in Prydz Bay (East Antarctica); coastal sources, sinks and phytoplankton iron stress (2012396)
Rob Middag1, Florine Kooij1, Robin L van Dijk2, Shigeru Aoki3, Marcus Gutjahr4, Meg Kitagawa5, Wytze K. Lenstra6, Willem van de Poll7 and Caroline P Slomp6, (1)Royal Netherlands Institute for Sea Research, Department of Ocean Systems, Den Burg, Netherlands, (2)University of Tasmania, Hobart, Australia, (3)Institute of Low Temperature Science, Hokkaido University, Sapporo, Japan, (4)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (5)Hokkaido University, Institute of Low Temperature Science, Sapporo, Japan, (6)Radboud University, Nijmegen, Netherlands, (7)University of Groningen, Groningen, Netherlands
 
A New Spiral-Based Framework to Leverage Rare Earth Element Group Behaviour for Characterising Global Ocean Biogeochemical Processes (2012650)
Emily Liu and Yves Plancherel, Imperial College London, Department of Earth Sciences and Engineering, London, United Kingdom
 
Distribution of dissolved Yttrium and Rare Earth Elements in the Arabian Sea (2013274)
Chhaya Yadav1,2, Sunil Kumar Singh Prof2,3 and Tapas Kumar Mishra1,2, (1)CSIR-National Institute of Oceanography, Panjim, India, (2)Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India, (3)CSIR-National Institute of Oceanography, Director, Panjim, India
 
Multi-tracer model evaluation of anthropogenic and lithogenic aerosols based on observations of trace metals in aerosols over the North Pacific (2015047)
Akinori Ito, Japan Agency for Marine-Earth Science and Technology, Research Institute for Global Change, Kanagawa, Japan, Minako Kurisu, The University of Tokyo, Atmosphere and Ocean Research Institute, Chiba, Japan and Kana Nagashima, JAMSTEC, Yokosuka, Japan
 
Using Multi-Tracer Data from the GEOTRACES Intermediate Data Product 2025 to Explore Marine Biogeochemical Cycling Processes (2015437)
William M Landing, Florida State University, Earth, Ocean, and Atmospheric Science, Tallahassee, FL, United States, Reiner Schlitzer, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany, Maria Teresa Maldonado, University of British Columbia, Earth, Ocean & Atmospheric Sciences, Vancouver, BC, Canada, Ana Aguilar-Islas, University of Alaska Fairbanks, Fairbanks, United States, Hélène Planquette, IUEM Institut Universitaire Européen de la Mer, LEMAR (CNRS, Univ Brest, IRD, Ifremer), Plouzané, France, Robert F Anderson, Lamont-Doherty Earth Observatory at Columbia University, Palisades, United States, Elena Masferrer Dodas, GEOTRACES International Project Office LEGOS-OMP, Toulouse, France and Donna Cockwell, GEOTRACES International Data Assembly Centre, British Oceanographic Data Centre, Southampton, United Kingdom
 
Iron supply pathways to the iron-limited Oyashio region: Contributions from the Kuroshio-Oyashio transition zone revealed by numerical simulations (2017715)
Kazuhiro Misumi, CRIEPI, Abiko, Chiba, Japan and Takaki Tsubono, Central Research Institute of Electric Power Industry, Abiko, Japan
 
Revisiting the Zn cycle controlling the silicon and zinc coupling in the global ocean and decoupling in the North Pacific (2019083)
Mr. Kiminori Sugino, PhD student, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan and Akira Oka, The University of Tokyo, Japan
 
Elucidating the roles of water-column processes in marine cycling of nickel and cadmium with paired dissolved and particulate isotopes (2019434)
Chun Fung Chiu1,2, Corey Archer2, Michael Joseph Ellwood3 and David J Janssen1, (1)EAWAG, Kastanienbaum, Switzerland, (2)ETH Zurich, Zurich, Switzerland, (3)Australian National University, Research School of Earth Sciences, Canberra, ACT, Australia
 
Lead Isotopes in Deep Sea Sediments reveal alteration of Isotopic Signal in the Water Column at Highly Productive Sites in the Southern Ocean (2019766)
Lina Oskamp1, Marta Pérez Rodríguez1, Adelina Calean1, Harald Biester1, Marco Benkhettab Sindlev2, Frank Wenzhofer3 and Ronnie N Glud4, (1)Technical University of Braunschweig, Institute for Geoecology, Environmental Geochemistry Group, Braunschweig, Germany, (2)University of Southern Denmark, Odense, Denmark, HADAL & Nordcee, Department of Biology, Odense, Denmark, (3)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, HGF-MPG Joint Research Group for Deep-Sea Ecology and Technology, Bremerhaven, Germany, (4)University of Southern Denmark, Department of Biology, Odense M, Denmark
 
Quantifying Particle Fluxes in a Mesoscale Eddy in the Labrador Sea using Thorium Measurements (2021101)
Stephanie Kienast and Madeline Healey, Dalhousie University, Department of Oceanography, Halifax, NS, Canada
 
Nanogram-Level, Phase-Specific Dissolved Selenium Isotopic Analyses in Seawater (2022088)
Laura Piccirillo and Michael Kipp, Duke University, Nicholas School of the Environment, Durham, United States
 
Distributions and Biogeochemical Cycles of Fe, Mn, Cu, Zn in the Western North Pacific (2022440)
Inhee Kim, Naoya Kanna, Shigeyoshi Otosaka and Hajime Obata, The University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Japan
 
Seasonal and Annual Shifts in Dissolved Iron Distributions and Cycling Across a Repeat Basin-Scale Southern Ocean Transect (2022614)
Thomas Holmes1, Pauline Latour2, Ashley T Townsend3, Matthew Corkill4, Melanie Gault‐Ringold4, Pier van der Merwe4, Kathrin Wuttig5 and Andrew R Bowie4, (1)Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (2)Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia, (3)University of Tasmania, Central Science Laboratory, Hobart, TAS, Australia, (4)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (5)Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany
 
Chemical Controls on Iron Distributions in the South Pacific Ocean (2023368)
Martha Gledhill1, Kathleen Gosnell1, Dr. Matthew Paul Humphreys, PhD2, Louise Delaigue3,4, Kechen Zhu1, Niklas Helle1, Pablo Lodeiro5, Carlos Rey-Castro5 and Eric P Achterberg6, (1)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (2)NIOZ Royal Netherlands Institute for Sea Research, Department of Ocean Systems, Texel, Netherlands, (3)Royal Netherlands Institute for Sea Research, Den Burg, Netherlands, (4)Laboratoire d’Océanographie de Villefranche, LOV, Villefranche-sur-mer, France, (5)University of Lleida, Department of Chemistry, Physics and Environmental and Soil Sciences, Lleida, Spain, (6)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany
 
A study on behavior of phenol in coastal seawater using Ra isotopes (2023485)
Haein Yu1, Gi Beum Kim2, Tae-Sung Kim3, Moonjin Lee3 and Yong Hwa Oh4, (1)Korea Maritime and Ocean University, Department of Convergence Study on the Ocean Science and Technology, Busan, South Korea, (2)Gyeongsang National University, Department of marine Environmental Engineering, Busan, South Korea, (3)Korea Research Institute of Ship&Ocean Engineering, Maritime Safety and Environment Research Center, Daejeon, South Korea, (4)Korea Maritime and Ocean University, Department of Convergence Study on the Ocean Science and Technology, Yeongdo-gu, South Korea
 
Nickel biogeochemistry in the subtropical Indian and Pacific Oceans: insights from dissolved and particulate isotopes (2023977)
Martin Müller1, Thomas Browning2, Nolwenn Lemaitre3, Eric P Achterberg2 and Derek Vance1, (1)ETH Swiss Federal Institute of Technology Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland, (2)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, (3)Laboratory of Space Geophysical and Oceanographic Studies (LEGOS), Toulouse, France
 
Margin inputs and natural fertilization along the SWINGS section (Southern Indian Ocean) (2024614)
Helene Planquette, UNITED STATES, Catherine Jeandel, LEGOS, Université de Toulouse (IRD, CNES, CNRS, UPS), Toulouse, France and Scientific team of SWINGS GEOTRACES GS02
 
Winter dynamics of phytoplankton and micronutrients in the Southern Ocean (2024863)
Susanne Fietz1, Dr. Johannes J Viljoen2, Ryan Cloete3, Alexander Hayward4, Raissa Philibert5, Ole Valk6, Hélène Planquette7, Eva Bucciarelli8, Jean C. Loock9, Geraldine Sarthou10, Alakendra Roychoudhury6 and Natasha van Horsten11, (1)Stellenbosch University, Department of Earth Sciences, Faculty of Science, Stellenbosch, South Africa, (2)University of Exeter, Department of Earth and Environmental Science, Penryn, United Kingdom, (3)Stellenbosch University, Earth Sciences, Stellenbosch, South Africa, (4)Danish Meteorological Institute, Copenhagen, Denmark, (5)Ecofish Research Ltd, Vancouver, Canada, (6)Stellenbosch University, Centre for Trace Metal and Experimental Biogeochemistry (TracEx), Stellenbosch, South Africa, (7)IUEM Institut Universitaire Européen de la Mer, LEMAR (CNRS, Univ Brest, IRD, Ifremer), Plouzané, France, (8)LEMAR (CNRS, Univ Brest, IRD, Ifremer), Plouzané, France, (9)Stellenbosch University, Stellenbosch, South Africa, (10)IUEM Institut Universitaire Européen de la Mer, LEMAR, CNRS, Plouzané, France, (11)Ifremer, Plouzané, France
 
Trace metal biogeochemistry in the Nordic Seas: Arctic and Atlantic water inflows determine nutrient availability (2024997)
Yaqing Ruan1, Stephan Krisch2, Thomas Browning1, Mark Moore3, Mario Esposito1, Tim Steffens1 and Eric P Achterberg1, (1)GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, (2)Technical University of Braunschweig, Institute of Geoecology, Braunschweig, Germany, (3)University of Southampton, School of Ocean and Earth Science, Southampton, United Kingdom
 
Thorium and Protactinium Isotopes as Tracers of Hydrothermal Scavenging: Differences in Scavenging across Multiple Plume Systems Sampled on GEOTRACES Cruises (2026459)
Anne Leal1, Robert F Anderson1, Martin Q Fleisher2, Christopher T Hayes3, Kazeem Ojuade3, R. Lawrence Edwards4, Juzer Shaikh4, Erin E Black5, Neil Redmond6, Peter Schroedl7, Xianglei Li4 and Phoebe J Lam8, (1)Lamont-Doherty Earth Observatory at Columbia University, Palisades, United States, (2)Lamont-Doherty Earth Observatory, Palisades, United States, (3)University of Southern Mississippi, Stennis Space Center, United States, (4)University of Minnesota, Department of Earth Sciences, Minneapolis, United States, (5)University of Rochester, Department of Earth and Environmental Sciences, Rochester, United States, (6)University of Rhode Island, School of Ocean Science and Engineering, Narragansett, United States, (7)Boston University, Boston, United States, (8)University of California Santa Cruz, Department of Ocean Sciences, Santa Cruz, United States
 
Manganese and Cobalt Biogeochemical Cycling in Northern, Equatorial, and Subtropical Gyre Regions of the Indian Ocean (2027925)
Tapas Kumar Mishra1,2 and Sunil Kumar Singh Prof2,3, (1)CSIR-National Institute of Oceanography, Panjim, India, (2)Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India, (3)CSIR-National Institute of Oceanography, Director, Panjim, India
 
Physical and biological controls on Cadmium distribution along the Southern Ocean GEOTRACES I09S section (2027954)
Edelgard Baumann1, Annie Foppert1, Ashley T Townsend2, Christopher Traill1, Scott Meyerink1, Andrew R Bowie1, Thomas Holmes1 and MISO GEOTRACES shipboard team, (1)University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia, (2)University of Tasmania, Central Science Laboratory, Hobart, TAS, Australia
 
Advancing Radioisotope Methods to Further Investigate Coastal Carbon Cycling (2028940)
Karine Holmes, Erin E Black, Thomas S Weber and Hairong Xu, University of Rochester, Department of Earth and Environmental Sciences, Rochester, United States
 
Biogeochemistry and Distribution of Bioactive Particulate Trace Metals in a warm and hypersaline environment: The Central Arabian/Persian Gulf (2029520)
Dr. Oguz Yigiterhan, Ph.D.1, Jassem Al-Thani1, Ersin Tutsak1, Ibrahim S Al-Ansari1, Ibrahim Abdullatif Al-Maslamani2 and Yousra Soliman3, (1)Qatar University, Environmental Science Center, Doha, Qatar, (2)Qatar University, Office of Vice President for Research and Graduate Studies, Doha, Qatar, (3)Qatar University, Department of Biological and Environmental Sciences, Doha, Qatar
 
Total particulate trace elements from US GEOTRACES GP17-ANT Antarctic section (2030230)
Debbrota Mallick, University of Georgia, Skidaway Institute of Oceanography, Savannah, United States, Phoebe J Lam, University of California Santa Cruz, Department of Ocean Sciences, Santa Cruz, United States, Jong-Mi Lee, University of California Santa Cruz, Ocean Sciences, Santa Cruz, CA, United States and Daniel C. Ohnemus, Skidaway Institute of Oceanography, UGA Dept. of Marine Sciences, Savannah, United States
 
Constraining Phytoplankton Iron Quota and Isotopic Composition in the Iron-limited Subarctic Pacific (2030921)
Tung-Yuan Ho, Research Center for Environmental Changes, Academia Sinica, Taipei, Taiwan, Wen-Hsuan Liao, National Cheng Kung University, Department of Earth Sciences, Tainan, Taiwan, Chih-Chiang Hsieh Dr., Academia Sinica, Research Center for Environmental Changes, Taipei, Taiwan, Sachiko Horii, Japan Fisheries Research and Education Agency, Nagasaki field station, Nagasaki, Japan, Kuo-Fang Huang, Academia Sinica, Institute of Earth Sciences, Taipei, Taiwan, Yoshiki Sohrin, Kyoto University, Institute of Chemical Research, Uji, Japan and Hajime Obata, The University of Tokyo, Atmosphere and Ocean Research Institute, Kashiwa, Japan
 
Tracing Arctic freshwater to the North Atlantic: nutrients, trace metals, and oyxgen isotopes reveal freshwater sources to the Labrador Sea (2033575)
Laramie Jensen1, Victoria Grisson2, Colombo Manuel2 and Nicholas Foukal3, (1)Applied Physics Laboratory University of Washington, Polar Science Center, Seattle, United States, (2)Virginia Institute of Marine Science, William & Mary, Gloucester Point, United States, (3)Skidaway Institute of Oceanography, Savannah, United States
 
Radioisotope constraints of benthic iron flux on the East Antarctic Peninsula (2034637)
William B Homoky1, Alastair J M Lough1, Isabel Leach1, Chiara Krewer1, Neil Wyatt2, Angela Milne2, Simon Ussher3 and Amber Luella Annett4, (1)University of Leeds, Leeds, United Kingdom, (2)University of Plymouth, Plymouth, United Kingdom, (3)University of Plymouth, School of Geography, Earth and Environmental Sciences, Plymouth, United Kingdom, (4)University of Southampton, Ocean and Earth Science, Southampton, United Kingdom
 
Processes controlling the distribution of dissolved Nickel in the Indian Ocean (2035313)
Nirmalya Malla, CSIR-National Institute of Ocenaography, Panjim, India and Sunil Kumar Singh Prof, CSIR-National Institute of Oceanography, Director, Panjim, India
 
Dissolved REE and Nd isotope distribution along the SWINGS section (Southern Indian Ocean) (2036959)
Catherine Jeandel, CNRS, LEGOS, Toulouse, France, Marion Lagarde, LOCEAN, Sorbonne Université, CNRS, IRD, Paris, France and Moustafa Belhadj Senini, LEGOS, CNRS, UT3, CNES, IRD, University of Toulouse, Toulouse, France
 
Linking Fecal Pellet Trace Element and Organic Carbon Export Fluxes: a Case Study from the Oligotrophic Northern Red Sea (2037259)
Clara Maria Flintrop and Adi Torfstein, Hebrew University of Jerusalem, Institute of Earth Sciences, Jerusalem, Israel
 
Dissolved rare earth elements and neodymium isotopes across Northern Antarctic Peninsula (2038093)
Viet Pham1, Raiza Andrade2, Rodrigo Kerr3, Mauricio Mata3, Moustafa Belhadj Senini4, Catherine Jeandel5 and Vanessa Hatje6,7, (1)IAEA Marine Laboratoires, Monaco, Monaco, (2)Universidade Federal Da Bahia, CIENAM, Brahia, Brazil, (3)Universidade Federal do Rio Grande, LEOC, Rio Grande-RS, Brazil, (4)LEGOS, CNRS, UT3, CNES, IRD, University of Toulouse, Toulouse, France, (5)LEGOS, Université de Toulouse (IRD, CNES, CNRS, UPS), Toulouse, France, (6)UFBA Federal University of Bahia, Salvador, BRAZIL, (7)IAEA Marine Environment Laboratories, Department of Nuclear Sciences and Applications, Monaco, Monaco
 
Chromium Cycling along GEOTRACES GP16: Sensitivity to Redox Processes and Particle Export (2039659)
Samuel Jaccard, University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland, David Janssen, EAWAG Swiss Federal Institute of Aquatic Science and Technology, Department Surface Waters Research & Management, Kastanienbaum, Switzerland and Philipp Nasemann, University of Bern, Institute of Geological Sciences, Bern, Switzerland
 
Complex Dual Role of the Kairei Hydrothermal Plume in Deep Ocean Trace Metal Cycling at the Central Indian Ridge (2041040)
Nico Fröhberg1, Katja Schmidt2, Maren Walter3, Ignacio Pedre1, Dieter Garbe-Schönberg4, Andrea Koschinsky5, Sebastian Fuchs2 and Charlotte Kleint6, (1)Constructor University, Bremen, Germany, (2)BGR Federal Institute for Geosciences and Natural Resources, Hannover, Germany, (3)University of Bremen, Institute of Environmental Physics, MARUM, Bremen, Germany, (4)University of Kiel, Kiel, Germany, (5)Constructor University, Department of Physics and Earth Sciences, Bremen, Germany, (6)MARUM Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany
 
Radium Isotopes Trace Distal Trace Metal Sources to the South Pacific: Insights from GEOTRACES GP17-OCE (2041365)
Margot Debyser, Woods Hole Oceanographic Institution, Woods Hole, United States, Tristan J Horner, Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, United States, Douglas E Hammond, University of Southern California, Department of Earth Science, Los Angeles, United States, Paul Henderson, Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, MA, United States and Matthew A Charette, Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, United States
 
Microbial Community Changes Associated to the Cessation of Venting at the East Pacific Rise Hydrothermal System Assessed by a Multi-Proxy Approach (2041938)
Florence Schubotz1, Alex Manthey2, Amanda Achberger3, Charlie Holmes4, Rose Jones5, Margaret K Tivey5, Brandy M Toner6, Jason B Sylvan4 and Eoghan P. Reeves7, (1)MARUM - Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany, (2)MARUM - University of Bremen, Center for Marine Environmental Sciences, Bremen, Germany, (3)Louisiana State University, Biological Sciences, Baton Rouge, LA, United States, (4)Texas A&M University, Oceanography, College Station, United States, (5)Woods Hole Oceanographic Institution, Woods Hole, United States, (6)University of Minnesota Twin Cities, Department of Soil, Water, and Climate, St. Paul, United States, (7)University of Bergen, Department of Earth Science & Centre for Deep Sea Research, Bergen, Norway
 
Late summer-fall export in the Arctic Ocean: insights from a pan-Arctic 234Th study (2043045)
Erin E Black, University of Rochester, Department of Earth and Environmental Sciences, Rochester, United States, Viena Puigicorbe, Institut de Ciències del Mar (ICM-CSIC), Department of Marine Biology and Oceanography, Barcelona, Spain, Ken Buesseler, Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, MA, United States, Phoebe J Lam, University of California Santa Cruz, Department of Ocean Sciences, Santa Cruz, United States, Pere Masque, School of Science, Edith Cowan University, Joondalup, Western Australia, Australia, Michiel Rutgers van der Loeff, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany and Yang Xiang, Louisiana State University, Baton Rouge, United States
 
Rare Earth Elements cycling from water to sediment and back (2045034)
Patrick Blaser1,2, Jianghui Du3, Brian A Haley4 and Samuel Jaccard1, (1)University of Lausanne, Institute of Earth Sciences, Lausanne, Switzerland, (2)GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany, (3)Peking University, Beijing, China, (4)Oregon State University, College of Earth, Ocean, and Atmospheric Sciences, Corvallis, United States
 
Dissolved Inorganic Carbon-13 and Carbon-14 Isotope Distributions in Slope Waters of Nova Scotia and Southern Newfoundland (2045886)
Lauren T O'Reilly1, Brett D. Walker2 and Owen Sherwood1, (1)Dalhousie University, Department of Earth and Environmental Sciences, Halifax, NS, Canada, (2)University of California Irvine, Earth System Science, Irvine, United States
 
Resolving the Top-Down/Bottom-Up Debate: A Basin-Specific Nd Isotope Cycle (2046926)
Paige Wise, University of Southern California, Earth Sciences, Los Angeles, CA, United States, Benoit Pasquier, University of New South Wales, Sydney, School of Mathematics and Statistics, New South Wales, Australia, Seth John, University of Southern California, Department of Earth Sciences, Los Angeles, United States and Sophia Hines, Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, United States
 
The Coordination Chemistry and Photolysis of Bioavailable Neurotoxic Methylmercury (2047473)
Laura C Motta, Woods Hole Oceanographic Institution, Marine Chemistry and Geochemistry, Woods Hole, United States
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