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

  • Heterotrophic bacteria exhibit a wide range of rates of extracellular production and decay of hydrogen peroxide 

    Bond, Robin J.; Hansel, Colleen M.; Voelker, Bettina M. (Frontiers Media, 2020-02-18)
    Bacteria have been implicated as both a source and sink of hydrogen peroxide (H2O2), a reactive oxygen species which can both impact microbial growth and participate in the geochemical cycling of trace metals and carbon ...
  • Organic sulfur: a spatially variable and understudied component of marine organic matter 

    Longnecker, Krista; Oswald, Lisa; Kido Soule, Melissa C.; Cutter, Gregory A.; Kujawinski, Elizabeth B. (Wiley Open Access, 2020-02-05)
    Sulfur (S) is a major heteroatom in organic matter. This project evaluated spatial variability in the concentration and molecular‐level composition of organic sulfur along gradients of depth and latitude. We measured the ...
  • Different carboxyl-rich alicyclic molecules proxy compounds select distinct bacterioplankton for oxidation of dissolved organic matter in the mesopelagic Sargasso Sea 

    Liu, Shuting; Parsons, Rachel J.; Opalk, Keri; Baetge, Nicholas; Giovannoni, Stephen J.; Bolaños, Luis M.; Kujawinski, Elizabeth B.; Longnecker, Krista; Lu, YueHan; Halewood, Elisa; Carlson, Craig A. (Wiley, 2020-01-23)
    Marine dissolved organic matter (DOM) varies in its recalcitrance to rapid microbial degradation. DOM of varying recalcitrance can be exported from the ocean surface to depth by subduction or convective mixing and oxidized ...
  • Dark biological superoxide production as a significant flux and sink of marine dissolved oxygen 

    Sutherland, Kevin M.; Wankel, Scott D.; Hansel, Colleen M. (National Academy of Sciences, 2020-02-03)
    The balance between sources and sinks of molecular oxygen in the oceans has greatly impacted the composition of Earth’s atmosphere since the evolution of oxygenic photosynthesis, thereby exerting key influence on Earth’s ...
  • Pangenomics analysis reveals diversification of enzyme families and niche specialization in globally abundant SAR202 bacteria 

    Saw, Jimmy H. W.; Nunoura, Takuro; Hirai, Miho; Takaki, Yoshihiro; Parsons, Rachel; Michelsen, Michelle; Longnecker, Krista; Kujawinski, Elizabeth B.; Stepanauskas, Ramunas; Landry, Zachary; Carlson, Craig A.; Giovannoni, Stephen J. (American Society for Microbiology, 2020-01-07)
    It has been hypothesized that the abundant heterotrophic ocean bacterioplankton in the SAR202 clade of the phylum Chloroflexi evolved specialized metabolisms for the oxidation of organic compounds that are resistant to ...
  • Evaluation of alkenones, a renewably sourced, plant-derived wax as a structuring agent for lipsticks 

    Huynh, An; Maktabi, Briana; Reddy, Christopher M.; O’Neil, Gregory W.; Chandler, Mark; Baki, Gabriella (Wiley, 2019-12-27)
    OBJECTIVE Waxes are used as structuring agents in lipsticks. There are a variety of waxes combined in a single lipstick to provide good stability, pleasant texture and good pay‐off. Due to a significant growth for natural, ...
  • Selective preservation of coccolith calcite in Ontong-Java Plateau sediments 

    Subhas, Adam V.; McCorkle, Daniel C.; Quizon, Alex; McNichol, Ann P.; Long, Matthew H. (American Geophysical Union, 2019-11-15)
    Dissolution of calcite in deep ocean sediments, which is required to balance global marine CaCO3 production and burial fluxes, is still a poorly understood process. In order to assess the mechanisms of dissolution in ...
  • The effect of pH on rates of reaction and hydrogen generation during serpentinization 

    McCollom, Thomas M.; Klein, Frieder; Solheid, Peter; Moskowitz, Bruce (The Royal Society, 2020-01-06)
    A series of three laboratory experiments were conducted to investigate how pH affects reaction pathways and rates during serpentinization. Two experiments were conducted under strongly alkaline conditions using olivine as ...
  • Fluid transport and reaction processes within a serpentinite mud volcano: South Chamorro Seamount 

    Wheat, C. Geoffrey; Seewald, Jeffrey S.; Takai, Ken (Elsevier, 2020-01-15)
    Natural fluids with a pH (25 °C) up to 12.3 were collected from a sub-seafloor borehole observatory (Ocean Drilling Program (ODP) Hole 1200C) on South Chamorro Seamount, a serpentinite mud volcano in the Mariana forearc. ...
  • Expanding Tara oceans protocols for underway, ecosystemic sampling of the ocean-atmosphere interface during Tara Pacific expedition (2016-2018) 

    Gorsky, Gabriel; Bourdin, Guillaume; Lombard, Fabien; Pedrotti, Maria Luiza; Audrain, Samuel; Bin, Nicolas; Boss, Emmanuel S.; Bowler, Chris; Cassar, Nicolas; Caudan, Loic; Chabot, Genevieve; Cohen, Natalie R.; Cron, Daniel; De Vargas, Colomban; Dolan, John R.; Douville, Eric; Elineau, Amanda; Flores, J. Michel; Ghiglione, Jean-Francois; Haëntjens, Nils; Hertau, Martin; John, Seth G.; Kelly, Rachel L.; Koren, Ilan; Lin, Yajuan; Marie, Dominique; Moulin, Clémentine; Moucherie, Yohann; Pesant, Stephane; Picheral, Marc; Poulain, Julie; Pujo-Pay, Mireille; Reverdin, Gilles; Romac, Sarah; Sullivan, Mathew B.; Trainic, Miri; Tressol, Marc; Troublé, Romain; Vardi, Assaf; Voolstra, Christian R.; Wincker, Patrick; Agostini, Sylvain; Banaigs, Bernard; Boissin, Emilie; Forcioli, Didier; Furla, Paola; Galand, Pierre E.; Gilson, Eric; Reynaud, Stephanie; Sunagawa, Shinichi; Thomas, Olivier P.; Vega Thurber, Rebecca; Zoccola, Didier; Planes, Serge; Allemand, Denis; Karsenti, Eric (Frontiers Media, 2019-12-11)
    Interactions between the ocean and the atmosphere occur at the air-sea interface through the transfer of momentum, heat, gases and particulate matter, and through the impact of the upper-ocean biology on the composition ...
  • Quantifying the effects of nutrient enrichment and freshwater mixing on coastal ocean acidification 

    Rheuban, Jennie E.; Doney, Scott C.; McCorkle, Daniel C.; Jakuba, Rachel W. (American Geophysical Union, 2019-11-07)
    The U.S. Northeast is vulnerable to ocean and coastal acidification because of low alkalinity freshwater discharge that naturally acidifies the region, and high anthropogenic nutrient loads that lead to eutrophication in ...
  • Hot and heterogenous high-he-3/He-4 components: New constraints from proto-Iceland plume lavas from Baffin Island 

    Willhite, Lori N.; Jackson, Matthew G.; Blichert-Toft, Janne; Bindeman, Ilya N.; Kurz, Mark D.; Halldórsson, Saemundur; Harðardóttir, Sunna; Gazel, Esteban; Price, Allison A.; Byerly, Benjamin L. (American Geophysical Union, 2019-11-07)
    The Icelandic hotspot has erupted basaltic magma with the highest mantle‐derived 3He/4He over a period spanning much of the Cenozoic, from the early‐Cenozoic Baffin Island‐West Greenland flood basalt province (49.8 RA), ...
  • Temporal evolution of primordial tungsten-182 and he-3/He-4 signatures in the Iceland mantle plume 

    Mundl-Petermeier, Andrea; Walker, Richard J.; Jackson, Matthew G.; Blichert-Toft, Janne; Kurz, Mark D.; Halldórsson, Saemundur (Elsevier, 2019-07-24)
    Studies of short-lived radiogenic isotope systems and noble gas isotopic compositions of plume-derived rocks suggest the existence of primordial domains in Earth's present-day mantle. Tungsten-182 anomalies together with ...
  • Quantifying oxygen management and temperature and light dependencies of nitrogen fixation by Crocosphaera watsonii 

    Inomura, Keisuke; Deutsch, Curtis A.; Wilson, Samuel T.; Masuda, Takako; Lawrenz, Evelyn; Bučinská, Lenka; Sobotka, Roman; Gauglitz, Julia M.; Saito, Mak A.; Prášil, Ondřej; Follows, Michael J. (American Society for Microbiology, 2019-12-11)
    Crocosphaera is a major dinitrogen (N2)-fixing microorganism, providing bioavailable nitrogen (N) to marine ecosystems. The N2-fixing enzyme nitrogenase is deactivated by oxygen (O2), which is abundant in marine environments. ...
  • Application of B, mg, li, and sr isotopes in acid-sulfate vent fluids and volcanic rocks as tracers for fluid-rock interaction in back-arc hydrothermal systems 

    Wilckens, Frederike K.; Reeves, Eoghan P.; Bach, Wolfgang; Seewald, Jeffrey S.; Kasemann, Simone A. (American Geophysical Union, 2019-11-15)
    The Manus Basin hosts a broad range of vent fluid compositions typical for arc and back‐arc settings, ranging from black smoker to acid‐sulfate styles of fluid venting, as well as novel intermediate temperature and composition ...
  • The Tara Pacific expedition-A pan-ecosystemic approach of the "-omics" complexity of coral reef holobionts across the Pacific Ocean 

    Planes, Serge; Allemand, Denis; Agostini, Sylvain; Banaigs, Bernard; Boissin, Emilie; Boss, Emmanuel S.; Bourdin, Guillaume; Bowler, Chris; Douville, Eric; Flores, J. Michel; Forcioli, Didier; Furla, Paola; Galand, Pierre E.; Ghiglione, Jean-Francois; Gilson, Eric; Lombard, Fabien; Moulin, Clémentine; Pesant, Stephane; Poulain, Julie; Reynaud, Stephanie; Romac, Sarah; Sullivan, Matthew B.; Sunagawa, Shinichi; Thomas, Olivier P.; Troublé, Romain; de Vargas, Colomban; Vega Thurber, Rebecca; Voolstra, Christian R.; Wincker, Patrick; Tara Pacific Consortium (Public Library of Science, 2019-09-23)
    Coral reefs are the most diverse habitats in the marine realm. Their productivity, structural complexity, and biodiversity critically depend on ecosystem services provided by corals that are threatened because of climate ...
  • Microbial signatures of protected and impacted Northern Caribbean reefs: changes from Cuba to the Florida Keys. 

    Weber, Laura; Gonzalez‐Díaz, Patricia; Armenteros, Maickel; Ferrer, Víctor M.; Bretos, Fernando; Bartels, Erich; Santoro, Alyson E.; Apprill, Amy (Wiley, 2019-11-19)
    There are a few baseline reef‐systems available for understanding the microbiology of healthy coral reefs and their surrounding seawater. Here, we examined the seawater microbial ecology of 25 Northern Caribbean reefs ...
  • Mn oxide formation by phototrophs: spatial and temporal patterns, with evidence of an enzymatic superoxide-mediated pathway 

    Chaput, Dominique L.; Fowler, Alexandré J.; Seo, Onyou; Duhn, Kelly; Hansel, Colleen M.; Santelli, Cara M. (Nature Research, 2019-12-03)
    Manganese (Mn) oxide minerals influence the availability of organic carbon, nutrients and metals in the environment. Oxidation of Mn(II) to Mn(III/IV) oxides is largely promoted by the direct and indirect activity of ...
  • Helium, inorganic and organic carbon isotopes of fluids and gases across the Costa Rica convergent margin 

    Barry, Peter H.; Nakagawa, Mayuko; Giovannelli, Donato; de Moor, J. Maarten; Schrenk, Matthew O.; Seltzer, Alan M.; Manini, Elena; Fattorini, Daniele; di Carlo, Marta; Regoli, Francesco; Fullerton, Katherine; Lloyd, Karen G. (Nature Research, 2019-11-25)
    In 2017, fluid and gas samples were collected across the Costa Rican Arc. He and Ne isotopes, C isotopes as well as total organic and inorganic carbon concentrations were measured. The samples (n = 24) from 2017 are ...
  • Small-scale variability dominates benthic coverage and diversity across the Jardines de la Reina, Cuba coral reef system 

    Hernández-Fernández, Leslie; González de Zayas, Roberto; Weber, Laura; Apprill, Amy; Armenteros, Maickel (Frontiers Media, 2019-11-29)
    Coral reefs are complex and biodiverse ecosystems that are undergoing significant change. Understanding reef composition and biodiversity at multiple spatial scales is necessary to track both large-scale and more subtle ...

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