PP23B:
Nutrient Cycling in Past Oceans II Posters

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Session ID#: 12959

Session Description:
Biological cycling of essential nutrients (e.g. N, P and Fe) in the ocean has been integral to global geochemical cycles since the origin of life on Earth. Through coupling with the carbon and oxygen cycles, nutrient cycling generates important feedbacks between the climate system and evolution of life. Recent analytical advances have broadened the scope of questions and enabled studies of the past nutrient cycling with unprecedented precision, detection limits, and temporal resolution. This session welcomes submissions describing new data, modeling results and hypotheses as well as analytical methods focused on nutrient cycling in past oceans. We hope to bring together studies exploring the scope of Earth history, with the goal to encourage discussions between the investigators working on the broad range of timescales, from the Archaean to the Quaternary and perspectives on the future.
Primary Convener:  Dr. Xingchen Tony Wang, PhD, Max Planck Institute for Chemistry, Mainz, Germany; Boston College, Department of Earth and Environmental Sciences, Chestnut Hill, MA, United States
Conveners:  Maria Prokopenko, Pomona College, Claremont, CA, United States, Haojia Abby Ren, Department of Geosciences, National Taiwan University, Taipei, Taiwan and Christopher K Junium, Syracuse University, Earth Sciences, Syracuse, NY, United States
Chairs:  Maria Prokopenko, Pomona College, Claremont, CA, United States, Dr. Xingchen Tony Wang, PhD, Max Planck Institute for Chemistry, Mainz, Germany; Boston College, Department of Earth and Environmental Sciences, Chestnut Hill, MA, United States, Christopher K Junium, Syracuse University, Earth Sciences, Syracuse, NY, United States and Haojia Abby Ren, Department of Geosciences, National Taiwan University, Taipei, Taiwan
OSPA Liaison:  Maria Prokopenko, Pomona College, Claremont, CA, United States
Index Terms:

4845 Nutrients and nutrient cycling [OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL]
4912 Biogeochemical cycles, processes, and modeling [PALEOCEANOGRAPHY]

Abstracts Submitted to this Session:

Identification of Phase Relationships and Incorporation Mechanisms of Barium in Calcite Internodes of Deep-Sea Bamboo Corals (197300)
Jamie Lynn Ptacek1, Benjamin Geyman1, Tristan J Horner2, Maureen E E Auro3, Tessa M Hill4 and Michele LaVigne5, (1)Bowdoin College, Brunswick, ME, United States, (2)Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, United States, (3)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, United States, (4)University of California Davis, Davis, CA, United States, (5)Bowdoin College, Department of Earth and Oceanographic Science, Brunswick, ME, United States
North Pacific barium isotope distributions illustrate importance of ocean mixing in controlling barium distributions despite weak regional circulation (197763)
Benjamin Geyman1, Maureen E E Auro2, Michele LaVigne3, Jamie Lynn Ptacek1 and Tristan J Horner4, (1)Bowdoin College, Brunswick, ME, United States, (2)Woods Hole Oceanographic Institution, Marine Chemistry & Geochemistry, Woods Hole, United States, (3)Bowdoin College, Department of Earth and Oceanographic Science, Brunswick, ME, United States, (4)Department of Marine Chemistry & Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, United States
Silicon and Ge in the deep sea deduced from Si isotope and Ge measurements in giant glass sponges (128379)
Klaus P Jochum1, Jan A. Schuessler2, Gerald Hermann Haug3, Meinrat O Andreae1 and Philip Nissen Froelich4, (1)Max Planck Institute for Chemistry, Mainz, Germany, (2)GFZ German Research Centre for Geosciences, Potsdam, Germany, (3)ETH Swiss Federal Institute of Technology Zurich, Zurich, Switzerland, (4)Duke University, Durham, NC, United States
Last Glacial Maximum Salinity Reconstruction (189032)
Kira Homola, University of California Los Angeles, Earth, Planetary, and Space Sciences, Los Angeles, CA, United States and Arthur J Spivack, University of Rhode Island, Graduate School of Oceanography, Narragansett, RI, United States
Sensitivity of the marine carbon cycle to mechanistic uncertainties in the biological pump (163744)
Jamie Devereux Wilson, University of Bristol, School of Earth Sciences, Bristol, United Kingdom, Sarah E Greene, University of Birmingham, School of GEES, Birmingham, United Kingdom and Andy Ridgwell, University of California, Department of Earth Sciences, Riverside, CA, United States
The simulated climate of the Last Glacial Maximum and insights into the global carbon cycle. (121847)
Pearse James Buchanan, Institute for Marine and Antarctic Studies, Taroona, TAS, Australia, Richard Matear, CSIRO, Oceans & Atmosphere, Hobart, TAS, Australia, Andrew Lenton, CSIRO Hobart, Hobart, TAS, Australia, Steven J Phipps, University of Tasmania, Hobart, TAS, Australia, Zanna Chase, University of Tasmania, Institute for Marine and Antarctic Studies, Hobart, TAS, Australia and David M Etheridge, CSIRO Environment, Aspendale, Australia
Beyond Rayleigh Distillation: Reconstructing Glacial Nutrient Cycles using a Seasonal Model of the Southern Ocean (122586)
Preston Cosslett Kemeny1,2, Emma Kast3, Sarah E Fawcett4, Mathis Hain5 and Daniel Mikhail Sigman3, (1)California Institute of Technology, Pasadena, United States, (2)Princeton University, Princeton, NJ, United States, (3)Princeton University, Geosciences, Princeton, United States, (4)University of Cape Town, Department of Oceanography, Rondebosch, South Africa, (5)University of California Santa Cruz, Santa Cruz, United States
The role of Thaumarchaeota in the Quaternary nitrogen cycle (156059)
Liang Dong1, Guodong Jia1,2, Li Zhiyang2 and Zijun Wu1, (1)Tongji University, Shanghai, China, (2)GIG Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China
Evaluating the isotopic composition and preservation of photosynthetic pigments in Lake Michigan (184625)
Benjamin Thornton Uveges, Syracuse University, Earth Sciences, Syracuse, United States and Christopher K Junium, Syracuse University, Earth Sciences, Syracuse, NY, United States
Evolution and Termination of Oceanic Anoxic Event 2: Testing the impact of organic matter sulfurization on benthic-pelagic coupling during OAE2 (173120)
Dominik Hülse, University of Bristol, Bristol, United Kingdom, Sandra Arndt, University of Bristol, School of Geographical Sciences, Bristol, United Kingdom and Andy Ridgwell, University of California, Department of Earth Sciences, Riverside, CA, United States
Nutrient recycling and the stoichiometric relationship among C, N, and P in Paleozoic anoxic sediments (195708)
Michael L Tuite Jr, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
When chemoclines collapse. (183796)
Christopher K Junium, Syracuse University, Earth Sciences, Syracuse, NY, United States, Benjamin Thornton Uveges, Syracuse University, Earth Sciences, Syracuse, United States and Christopher A Scholz, Syracuse University, Earth and Environmental Sciences, Syracuse, NY, United States

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