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

  • Simulating gas–liquid−water partitioning and fluid properties of petroleum under pressure : implications for deep-sea blowouts 

    Gros, Jonas; Reddy, Christopher M.; Nelson, Robert K.; Socolofsky, Scott; Arey, J. Samuel (American Chemical Society, 2016-04-27)
    With the expansion of offshore petroleum extraction, validated models are needed to simulate the behaviors of petroleum compounds released in deep (>100 m) waters. We present a thermodynamic model of the densities, ...
  • Source to sink : evolution of lignin composition in the Madre de Dios River system with connection to the Amazon basin and offshore 

    Feng, Xiaojuan; Feakins, Sarah; Liu, Zongguang; Ponton, Camilo; Wang, Renée Z.; Karkabi, Elias; Galy, valier; Berelson, William M.; Nottingham, Andrew T.; Meir, Patrick; West, A. Joshua (John Wiley & Sons, 2016-05-21)
    While lignin geochemistry has been extensively investigated in the Amazon River, little is known about lignin distribution and dynamics within deep, stratified river channels or its transformations within soils prior to ...
  • CO2 and fire influence tropical ecosystem stability in response to climate change 

    Shanahan, Timothy; Hughen, Konrad A.; McKay, Nicholas; Overpeck, Jonathan T.; Scholz, Christopher A.; Gosling, William D.; Miller, Charlotte S.; Peck, John A.; King, John W.; Heil, Clifford W. (Nature Publishing Group, 2016-07-18)
    Interactions between climate, fire and CO2 are believed to play a crucial role in controlling the distributions of tropical woodlands and savannas, but our understanding of these processes is limited by the paucity of data ...
  • Decoupled sedimentary records of combustion : causes and implications 

    Hanke, Ulrich; Eglinton, Timothy I.; Braun, Ana L. L.; Reddy, Christopher M.; Wiedemeier, Daniel B.; Schmidt, Michael W. I. (John Wiley & Sons, 2016-05-30)
    Pyrogenic carbon (PyC) is a collective term for carbon-rich residues comprised of a continuum of products arising from biomass burning and fossil-fuel combustion. PyC is ubiquitous in the environment where it can be ...
  • N2 fixation in eddies of the eastern tropical South Pacific Ocean 

    Löscher, Carolin; Bourbonnais, Annie; Dekaezemacker, Julien; Charoenpong, Chawalit; Altabet, Mark; Bange, Hermann; Czeschel, Rena; Hoffmann, Chris; Schmitz, Ruth (Copernicus Publications on behalf of the European Geosciences Union, 2016-05-18)
    Mesoscale eddies play a major role in controlling ocean biogeochemistry. By impacting nutrient availability and water column ventilation, they are of critical importance for oceanic primary production. In the eastern ...
  • Mechanisms of increased Trichodesmium fitness under iron and phosphorus co-limitation in the present and future ocean 

    Walworth, Nathan G.; Fu, Fei-Xue; Webb, Eric A.; Saito, Mak A.; Moran, Dawn M.; Mcllvin, Matthew R.; Lee, Michael D.; Hutchins, David A. (Nature Publishing Group, 2016-06-27)
    Nitrogen fixation by cyanobacteria supplies critical bioavailable nitrogen to marine ecosystems worldwide; however, field and lab data have demonstrated it to be limited by iron, phosphorus and/or CO2. To address unknown ...
  • Diversity and productivity of photosynthetic picoeukaryotes in biogeochemically distinct regions of the South East Pacific Ocean 

    Rii, Yoshimi M.; Duhamel, Solange; Bidigare, Robert R.; Karl, David M.; Repeta, Daniel J.; Church, Matthew J. (John Wiley & Sons, 2016-01-08)
    Picophytoplankton, including photosynthetic picoeukaryotes (PPE) and unicellular cyanobacteria, are important contributors to plankton biomass and primary productivity. In this study, phytoplankton composition and rates ...
  • Inconsistent strategies to spin up models in CMIP5 : implications for ocean biogeochemical model performance assessment 

    Seferian, Roland; Gehlen, Marion; Bopp, Laurent; Resplandy, Laure; Orr, James; Marti, Olivier; Dunne, John P.; Christian, James R.; Doney, Scott C.; Ilyina, Tatiana; Lindsay, Keith; Halloran, Paul R.; Heinze, Christoph; Segschneider, Joachim; Tjiputra, Jerry; aumont, olivier; Romanou, Anastasia (Copernicus Publications on behalf of the European Geosciences Union, 2016-05-12)
    During the fifth phase of the Coupled Model Intercomparison Project (CMIP5) substantial efforts were made to systematically assess the skill of Earth system models. One goal was to check how realistically representative ...
  • Punctuated shutdown of Atlantic Meridional Overturning Circulation during Greenland Stadial 1 

    Hogg, Alan; Southon, John; Turney, Chris; Palmer, Jonathan; Bronk Ramsey, Christopher; Fenwick, Pavla; Boswijk, Gretel; Friedrich, Michael; Helle, Gerhard; Hughen, Konrad A.; Jones, Richard; Kromer, Bernd; Noronha, Alexandra; Reynard, Linda; Staff, Richard; Wacker, Lukas (Nature Publishing Group, 2016-05-19)
    The Greenland Stadial 1 (GS-1; ~12.9 to 11.65 kyr cal BP) was a period of North Atlantic cooling, thought to have been initiated by North America fresh water runoff that caused a sustained reduction of North Atlantic ...
  • A note on reporting of reservoir 14C disequilibria and age offsets 

    Soulet, Guillaume; Skinner, Luke C.; Beaupre, Steven R.; Galy, valier (2016-01)
    Reservoir age offsets are widely used to correct marine and speleothem radiocarbon age measurements for various calibration purposes. They also serve as a powerful tracer for carbon cycle dynamics. However, a clear terminology ...
  • Quantifying air-sea gas exchange using noble gases in a coastal upwelling zone 

    Manning, Cara C.; Stanley, Rachel H. R.; Nicholson, David P.; Squibb, Michael E. (IOPScience, 2016)
    The diffusive and bubble-mediated components of air-sea gas exchange can be quantified separately using time-series measurements of a suite of dissolved inert gases. We have evaluated the performance of four published ...
  • Species-level variability in extracellular production rates of reactive oxygen species by diatoms 

    Schneider, Robin J.; Roe, Kelly L.; Hansel, Colleen M.; Voelker, Bettina M. (Frontiers Media, 2016-03-30)
    Biological production and decay of the reactive oxygen species (ROS) hydrogen peroxide (H2O2) and superoxide (O−2) likely have significant effects on the cycling of trace metals and carbon in marine systems. In this study, ...
  • The annual cycle of gross primary production, net community production, and export efficiency across the North Pacific Ocean 

    Palevsky, Hilary I.; Quay, Paul D.; Lockwood, Deirdre E.; Nicholson, David P. (John Wiley & Sons, 2016-02-27)
    We measured triple oxygen isotopes and oxygen/argon dissolved gas ratios as nonincubation-based geochemical tracers of gross oxygen production (GOP) and net community production (NCP) on 16 container ship transects across ...
  • Lipid remodelling is a widespread strategy in marine heterotrophic bacteria upon phosphorus deficiency 

    Sebastian, Marta; Smith, Alastair; Gonzalez, Jose M.; Fredricks, Helen F.; Van Mooy, Benjamin; Koblizek, Michal; Brandsma, Joost; Koster, Grielof; Mestre, Mireia; Mostajir, Behzad; Pitta, Paraskevi; Postle, Anthony D.; Sanchez, Pablo; Gasol, Josep M.; Scanlan, David J.; Chen, Yin (Nature Publishing Group, 2015-11-13)
    Upon phosphorus (P) deficiency, marine phytoplankton reduce their requirements for P by replacing membrane phospholipids with alternative non-phosphorus lipids. It was very recently demonstrated that a SAR11 isolate also ...
  • Revising upper-ocean sulfur dynamics near Bermuda : new lessons from 3 years of concentration and rate measurements 

    Levine, Naomi M.; Toole, Dierdre A.; Neeley, Aimee; Bates, Nicholas R.; Doney, Scott C.; Dacey, John W. H. (CSIRO Publishing, 2015-11-10)
    Oceanic biogeochemical cycling of dimethylsulfide (DMS), and its precursor dimethylsulfoniopropionate (DMSP), has gained considerable attention over the past three decades because of the potential role of DMS in climate ...
  • Decolorization improves the fuel properties of algal biodiesel from Isochrysis sp. 

    O’Neil, Gregory W.; Knothe, Gerhard; Williams, John R.; Burlow, Noah P.; Reddy, Christopher M. (2016-03)
    Results from the comprehensive fuel testing according to American Society for Testing and Materials International (ASTM) standards of an alkenone-free and decolorized biodiesel produced from the industrially grown marine ...
  • Methanol production by a broad phylogenetic array of marine phytoplankton 

    Mincer, Tracy J.; Aicher, Athena C. (Public Library of Science, 2016-03-10)
    Methanol is a major volatile organic compound on Earth and serves as an important carbon and energy substrate for abundant methylotrophic microbes. Previous geochemical surveys coupled with predictive models suggest that ...
  • Gross and microscopic lesions in corals from Micronesia 

    Work, Thierry M.; Aeby, Greta S.; Hughen, Konrad A. (2015-03)
    We documented gross and microscopic morphology of lesions in corals on seven islands spanning western, southern, and eastern Micronesia. We sampled 76 colonies comprising 30 species of corals among 18 genera with Acropora, ...
  • Biosynthesis of coral settlement cue tetrabromopyrrole in marine bacteria by a uniquely adapted brominase-thioesterase enzyme pair 

    El Gamal, Abrahim; Agarwal, Vinayak; Diethelm, Stefan; Rahman, Imran; Schorn, Michelle A.; Sneed, Jennifer M.; Louie, Gordon V.; Whalen, Kristen E.; Mincer, Tracy J.; Noel, Joseph P.; Paul, Valerie J.; Moore, Bradley S. (2016-02)
    Halogenated pyrroles (halopyrroles) are common chemical moieties found in bioactive bacterial natural products. The halopyrrole moieties of mono- and di- halopyrrole-containing compounds arise from a conserved mechanism ...
  • Neodymium isotope analyses after combined extraction of actinide and lanthanide elements from seawater and deep-sea coral aragonite 

    Struve, Torben; van de Flierdt, Tina; Robinson, Laura F.; Bradtmiller, Louisa I.; Hines, Sophia K.; Adkins, Jess F.; Lambelet, Myriam; Crocket, Kirsty C.; Kreissig, Katharina; Coles, Barry; Auro, Maureen E. (John Wiley & Sons, 2016-01-09)
    Isotopes of the actinide elements protactinium (Pa), thorium (Th), and uranium (U), and the lanthanide element neodymium (Nd) are often used as complementary tracers of modern and past oceanic processes. The extraction of ...

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