Research in MC&G ranges from the glacial history of the Antarctic ice sheet and the formation of surface films in the upper micron of the ocean to the cycling of carbon through various ocean reservoirs, the history of ocean circulation recorded in the growth bands of coral, and the role of hydrothermal vents and seawater-rock interactions on the composition of the oceans.

Recent Submissions

  • Using excess 3He to estimate Southern Ocean upwelling time scales 

    Jenkins, William J. (Wiley, 2020-08-04)
    Using a recently compiled global marine data set of dissolved helium isotopes and helium and neon concentrations, we make an estimate of the inventory of hydrothermal 3He in the Southern Ocean to be 4.9 ± 0.6 × 104 moles. ...
  • Abiotic redox reactions in hydrothermal mixing zones: decreased energy availability for the subsurface biosphere 

    McDermott, Jill M.; Sylva, Sean P.; Ono, Shuhei; German, Christopher R.; Seewald, Jeffrey S. (National Academy of Sciences, 2020-08-12)
    Subseafloor mixing of high-temperature hot-spring fluids with cold seawater creates intermediate-temperature diffuse fluids that are replete with potential chemical energy. This energy can be harnessed by a chemosynthetic ...
  • The value of scientific research on the ocean's biological carbon pump 

    Jin, Di; Hoagland, Porter; Buesseler, Ken O. (Elsevier, 2020-08-01)
    The ocean's biological carbon pump (BCP) sequesters carbon from the surface to the deep ocean and seabed, constituting one of Earth's most valuable ecosystem services. Significant uncertainty exists surrounding the amounts ...
  • Nitrite oxidation exceeds reduction and fixed nitrogen loss in anoxic Pacific waters 

    Babbin, Andrew; Buchwald, Carolyn; Morel, Francois M. M.; Wankel, Scott D.; Ward, Bess B. (Elsevier, 2020-08-20)
    The diversity of nitrogen-based dissimilatory metabolisms in anoxic waters continues to increase with additional studies to the marine oxygen deficient zones (ODZs). Although the microbial oxidation of nitrite (NO2–) has ...
  • Microbial succession during the transition from active to inactive stages of deep-sea hydrothermal vent sulfide chimneys 

    Hou, Jialin; Sievert, Stefan M.; Wang, Yinzhao; Seewald, Jeffrey S.; Natarajan, Vengadesh Perumal; Wang, Fengping; Xiao, Xiang (BMC, 2020-06-30)
    Background Deep-sea hydrothermal vents are highly productive biodiversity hotspots in the deep ocean supported by chemosynthetic microorganisms. Prominent features of these systems are sulfide chimneys emanating ...
  • Arctic amplification of global warming strengthened by sunlight oxidation of permafrost carbon to CO2 

    Bowen, Jennifer C.; Ward, Collin P.; Kling, George W.; Cory, Rose M. (Wiley, 2020-06-09)
    Once thawed, up to 15% of the ∼1,000 Pg of organic carbon (C) in arctic permafrost soils may be oxidized to carbon dioxide (CO2) by 2,100, amplifying climate change. However, predictions of this amplification strength ...
  • Impacts of deep-sea mining on microbial ecosystem services 

    Orcutt, Beth N.; Bradley, James; Brazelton, William J.; Estes, Emily R.; Goordial, Jacqueline M.; Huber, Julie; Jones, Rose M.; Mahmoudi, Nagissa; Marlow, Jeffrey; Murdock, Sheryl; Pachiadaki, Maria G. (Association for the Sciences of Limnology and Oceanography, 2020-01-13)
    Interest in extracting mineral resources from the seafloor through deep‐sea mining has accelerated in the past decade, driven by consumer demand for various metals like zinc, cobalt, and rare earth elements. While there ...
  • Observational and modeling evidence of seasonal trends in sediment-derived material inputs to the Chukchi Sea 

    Kipp, Lauren; Spall, Michael A.; Pickart, Robert S.; Kadko, David C.; Moore, Willard S; Dabrowski, Jessica S.; Charette, Matthew A. (American Geophysical Union, 2020-04-27)
    Benthic inputs of nutrients help support primary production in the Chukchi Sea and produce nutrient‐rich water masses that ventilate the halocline of the western Arctic Ocean. However, the complex biological and redox ...
  • Particulate organic carbon deconstructed: molecular and chemical composition of particulate organic carbon in the ocean 

    Kharbush, Jenan J.; Close, Hilary G.; Van Mooy, Benjamin A. S.; Arnosti, Carol; Smittenberg, Rienk H.; Le Moigne, Frederic A. C.; Mollenhauer, Gesine; Scholz-Böttcher, Barbara; Obreht, Igor; Koch, Boris P.; Becker, Kevin W.; Iversen, Morten H.; Mohr, Wiebke (Frontiers Media, 2020-06-26)
    The dynamics of the particulate organic carbon (POC) pool in the ocean are central to the marine carbon cycle. POC is the link between surface primary production, the deep ocean, and sediments. The rate at which POC is ...
  • The transpolar drift as a source of riverine and shelf-derived trace elements to the central Arctic Ocean 

    Charette, Matthew A.; Kipp, Lauren; Jensen, Laramie T.; Dabrowski, Jessica S.; Whitmore, Laura M.; Fitzsimmons, Jessica N.; Williford, Tatiana; Ulfsbo, Adam; Jones, Elizabeth M.; Bundy, Randelle M.; Vivancos, Sebastian M.; Pahnke, Katharina; John, Seth G.; Xiang, Yang; Hatta, Mariko; Petrova, Mariia V.; Heimbürger, Lars-Eric; Bauch, Dorothea; Newton, Robert; Pasqualini, Angelica; Agather, Alison; Amon, Rainer M. W.; Anderson, Robert F.; Andersson, Per S.; Benner, Ronald; Bowman, Katlin; Edwards, R. Lawrence; Gdaniec, Sandra; Gerringa, Loes J. A.; González, Aridane G.; Granskog, Mats A.; Haley, Brian; Hammerschmidt, Chad R.; Hansell, Dennis A.; Henderson, Paul B.; Kadko, David C.; Kaiser, Karl; Laan, Patrick; Lam, Phoebe J.; Lamborg, Carl H.; Levier, Martin; Li, Xianglei; Margolin, Andrew R.; Measures, Christopher I.; Middag, Rob; Millero, Frank J.; Moore, Willard S.; Paffrath, Ronja; Planquette, Helene; Rabe, Benjamin; Reader, Heather; Rember, Robert; Rijkenberg, Micha J. A.; Roy-Barman, Matthieu; van der Loeff, Michiel Rutgers; Saito, Mak A.; Schauer, Ursula; Schlosser, Peter; Sherrell, Robert M.; Shiller, Alan M.; Slagter, Hans; Sonke, Jeroen E.; Stedmon, Colin; Woosley, Ryan J.; Valk, Ole; van Ooijen, Jan; Zhang, Ruifeng (American Geophysical Union, 2020-04-08)
    A major surface circulation feature of the Arctic Ocean is the Transpolar Drift (TPD), a current that transports river‐influenced shelf water from the Laptev and East Siberian Seas toward the center of the basin and Fram ...
  • Hydrogen generation and iron partitioning during experimental serpentinization of an olivine-pyroxene mixture 

    McCollom, Thomas M.; Klein, Frieder; Moskowitz, Bruce; Berquo, Thelma S.; Bach, Wolfgang; Templeton, Alexis S. (Elsevier, 2020-05-26)
    A series of laboratory experiments was conducted to investigate serpentinization of olivine–pyroxene mixtures at 230 °C, with the objective of evaluating the effect of mixed compositions on Fe partitioning among product ...
  • Physiological dynamics of chemosynthetic symbionts in hydrothermal vent snails 

    Breusing, Corinna; Mitchell, Jessica; Delaney, Jennifer; Sylva, Sean P.; Seewald, Jeffrey S.; Girguis, Peter R.; Beinart, Roxanne A. (Springer Nature, 2020-07-02)
    Symbioses between invertebrate animals and chemosynthetic bacteria form the basis of hydrothermal vent ecosystems worldwide. In the Lau Basin, deep-sea vent snails of the genus Alviniconcha associate with either ...
  • Metabolomics as an emerging tool in the search for astrobiologically relevant biomarkers 

    Seyler, Lauren M.; Kujawinski, Elizabeth B.; Azua-Bustos, Armando; Lee, Michael D.; Marlow, Jeffrey; Perl, Scott M.; Cleaves, Henderson James, II (Mary Ann Liebert, 2020-06-17)
    It is now routinely possible to sequence and recover microbial genomes from environmental samples. To the degree it is feasible to assign transcriptional and translational functions to these genomes, it should be possible, ...
  • Compositional and isotopic characteristics of hydrocarbons generated by a hydrothermal experiment simulating seafloor sediment alteration stepwise heating from 275 to 361 degrees C at 30 MPa 

    Kawagucci, Shinsuke; Seewald, Jeffrey S. (The Geochemical Society of Japan, 2019-08-08)
    We conducted a laboratory hydrothermal experiment that simulated generation of low molecular-weight hydrocarbons during seafloor sediment alteration at 275–361°C and 30 MPa. The abundance and carbon and hydrogen stable ...
  • Desorption behavior of Fukushima-derived radiocesium in sand collected from Yotsukura Beach in Fukushima prefecture 

    Nagao, Seiya; Terasaki, Soichiro; Ochiai, Shinya; Fukushi, Keisuke; Tomihara, Seiichi; Charette, Matthew A.; Buesseler, Ken O. (The Japan Society for Analytical Chemistry, 2020-05-10)
    Beach sand samples were collected along a coastal area 32 km south of the Fukushima Daiichi Nuclear Power Plant (FDNPP) in Fukushima Prefecture, Japan, 5 years after the FDNPP accident. Desorption experiments were performed ...
  • From Andes to Amazon: assessing branched tetraether lipids as tracers for soil organic carbon in the Madre de Dios River system 

    Kirkels, Frédérique M. S. A.; Ponton, Camilo; Galy, Valier; West, A. Joshua; Feakins, Sarah J.; Peterse, Francien (American Geophysical Union, 2019-12-19)
    We investigate the implications of upstream processes and hydrological seasonality on the transfer of soil organic carbon (OC) from the Andes mountains to the Amazon lowlands by the Madre de Dios River (Peru), using branched ...
  • Geochemistry of small Canadian Arctic rivers with diverse geological and hydrological settings 

    Brown, Kristina A.; Williams, William J.; Carmack, Eddy C.; Fiske, Gregory J.; Francois, Roger; McLennan, Donald; Peucker-Ehrenbrink, Bernhard (American Geophysical Union, 2020-01-03)
    A survey of 25 coastal‐draining rivers across the Canadian Arctic Archipelago (CAA) shows that these systems are distinct from the largest Arctic rivers that drain watersheds extending far south of the Arctic circle. ...
  • Opinion: we need better data about the environmental persistence of plastic goods 

    Ward, Collin P.; Reddy, Christopher M. (National Academy of Sciences, 2020-06-10)
    Plastic pollution is one of the most visible and complex environmental issues today. Interested and concerned parties include researchers, governmental agencies, nongovernmental organizations, industry, media, and the ...
  • Auxotrophic interactions: A stabilizing attribute of aquatic microbial communities? 

    Johnson, Winifred M.; Alexander, Harriet; Bier, Raven L.; Miller, Dan R.; Muscarella, Mario E.; Pitz, Kathleen J.; Smith, Heidi (Oxford University Press, 2020-06-10)
    Auxotrophy, or an organism's requirement for an exogenous source of an organic molecule, is widespread throughout species and ecosystems. Auxotrophy can result in obligate interactions between organisms, influencing ecosystem ...
  • Guidelines and limits for the quantification of ra isotopes and related radionuclides with the radium delayed coincidence counter (RaDeCC) 

    Diego-Feliu, Marc; Rodellas, Valenti; Alorda-Kleinglass, Aaron; Tamborski, Joseph; van Beek, Pieter; Heins, L.; Bruach, Joan Manuel; Arnold, Ralph; Garcia-Orellana, Jordi (American Geophysical Union, 2020-03-27)
    The Radium Delayed Coincidence Counter (RaDeCC) is one of the most extensively used equipment for measuring 223Ra and 224Ra activities in water and sediment samples. Samples are placed in a closed He‐circulation system ...

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