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20 Research products, page 1 of 2

  • European Marine Science
  • Publications
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  • Biogeosciences (BG)

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  • Open Access
    Authors: 
    Natasha R. van Horsten; Hélène Planquette; Géraldine Sarthou; Thomas J. Ryan-Keogh; Thato N. Mtshali; Alakendra N. Roychoudhury; Eva Bucciarelli;
    Publisher: Copernicus GmbH
    Country: France

    The Southern Ocean is of global importance and processes such as mesopelagic remineralisation that impact the efficiency of the biological carbon pump in this region is of substantial interest. During this study the proxy barium excess which is utilised to shed light on...

  • Open Access English
    Authors: 
    Tim Rixen; Greg Cowie; Birgit Gaye; Joaquim I. Goes; Helga do Rosario Gomes; Raleigh R. Hood; Zouhair Lachkar; Henrike Schmidt; Joachim Segschneider; Arvind Singh;
    Country: Germany

    Decreasing concentrations of dissolved oxygen in the ocean are considered one of the main threats to marine ecosystems as they jeopardize the growth of higher organisms. They also alter the marine nitrogen cycle, which is strongly bound to the carbon cycle and climate. ...

  • Open Access English
    Authors: 
    Guillermic, Maxence; Misra, Sambuddha; Eagle, Robert; Villa, Alexandra; Chang, Fengming; Tripati, Aradhna;
    Publisher: Copernicus Gesellschaft Mbh
    Country: France

    Boron isotope systematics of planktonic foraminifera from core-top sediments and culture experiments have been studied to investigate the sensitivity of δ11B of calcite tests to seawater pH. However, our knowledge of the relationship between δ11B and pH remains incomple...

  • Open Access
    Authors: 
    S. Myriokefalitakis; S. Myriokefalitakis; A. Ito; M. Kanakidou; A. Nenes; M. C. Krol; N. M. Mahowald; R. A. Scanza; D. S. Hamilton; M. S. Johnson; +12 more
    Countries: United States, Switzerland, France, United Kingdom
    Project: EC | ODEON (705652)

    This work reports on the current status of the global modeling of iron (Fe) deposition fluxes and atmospheric concentrations and the analyses of the differences between models, as well as between models and observations. A total of four global 3-D chemistry transport (C...

  • Open Access English
    Authors: 
    Jing Zhang; Denis Gilbert; Andrew J. Gooday; Lisa A. Levin; S. W. A. Naqvi; Jack J. Middelburg; M. I. Scranton; Werner Ekau; Angelica Peña; Boris Dewitte; +10 more
    Countries: Netherlands, France
    Project: EC | HYPOX (226213)

    Abstract. Hypoxia has become a world-wide phenomenon in the global coastal ocean and causes deterioration of structure and function of ecosystems. Based on the collective contributions of members of SCOR Working Group #128, the present study provides an overview of the ...

  • Open Access English
    Authors: 
    M. De Troch; M. Roelofs; Bettina Riedel; M. Grego;
    Country: Belgium
    Project: FWF | Low dissolved oxygen even... (P 21542)

    Abstract. Combined in situ and laboratory studies were conducted to document the effects of anoxia on the structure and functioning of meiobenthic communities, with special focus on harpacticoid copepods. In a first step, anoxia was created artificially by means of an u...

  • Publication . Other literature type . Article . 2018
    Open Access English
    Authors: 
    Naqvi, S W A; Bange, H W; Farías, L; Monteiro, P M S; Scranton, M I; Zhang, J;
    Publisher: Copernicus Publications
    Countries: South Africa, Germany

    We review here the available information on methane (CH4) and nitrous oxide (N2O) from major marine, mostly coastal, oxygen (O2)-deficient zones formed both naturally and as a result of human activities (mainly eutrophication). Concentrations of both gases in subsurface...

  • Open Access English
    Authors: 
    Bettencourt, R.; Rodrigues, M. I.; Barros, I.; Cerqueira, T.; Freitas, C.; Costa, V.; Pinheiro, M.; Egas, C.; Santos, R. S.;
    Project: FCT | PEst-OE/EEI/LA0009/2011 (PEst-OE/EEI/LA0009/2011), EC | HERMIONE (226354), FCT | PTDC/MAR/65991/2006 (PTDC/MAR/65991/2006)

    The deep-sea hydrothermal vent mussel Bathymodiolus azoricus is a symbiont bearing bivalve that is found in great abundance at the Menez Gwen and Lucky Strike vent sites and in close vicinity off the Azores region near the Mid-Atlantic Ridge (MAR). The distinct relation...

  • Publication . Article . Other literature type . 2018
    Open Access
    Authors: 
    S. Shalin; S. Shalin; A. Samuelsen; A. Korosov; N. Menon; B. C. Backeberg; B. C. Backeberg; B. C. Backeberg; L. H. Pettersson;
    Publisher: Copernicus GmbH
    Project: EC | INDO-MARECLIM (295092)

    The spatial and temporal variability of marine autotrophic abundance, expressed as chlorophyll concentration, is monitored from space and used to delineate the surface signature of marine ecosystem zones with distinct optical characteristics. An objective zoning method ...

  • Open Access English
    Authors: 
    Geilert, Sonja; Hensen, Christian; Schmidt, Mark; Liebetrau, Volker; Scholz, Florian; Doll, Mechthild; Deng, Longhui; Fiskal, Annika; Lever, Mark A.; Su, Chih-Chieh; +4 more
    Publisher: Copernicus
    Countries: Germany, Switzerland

    Magmatic sill intrusions into organic-rich sediments cause the release of thermogenic CH4 and CO2. Pore fluids from the Guaymas Basin (Gulf of California), a sedimentary basin with recent magmatic activity, were investigated to constrain the link between sill intrusions...