Projects funded from 2007-2009 in the framework of the DFG-Priority Program 1144 "From Mantle to Ocean: Energy-, Material- and Life-cycles at Spreading Axes"

• Geobiological coupling between hydrothermal vent fluids and symbiotic primary producers at spreading axes.
  Responsible: N. Dubilier, Max Planck Institute of Marine Microbiology, Bremen
• Numerical modeling of mantle flow, melt migration, and MORB compositions.
  Responsible: M. Hort, Geophysik, Universität Hamburg
• Magma differentiation processes and pre-eruptive conditions of MORBs (7-11°S) near Ascension Island - Constraints from experiments and phase equilibria modeling.
  Responsible: F. Holtz und J. Koepke, Institut für Mineralogie, Universität Hannover
• Hydrothermal fluids at the Mid-Atlantic Ridge (15°N and 4-11°S) as media for the transport of energy and mass from the crust into the hydro- and biosphere.
  Responsible: A. Koschinsky, Jacobs University Bremen and D. Garbe-Schönberg, Universität Kiel, C. Ostertag-Henning, Bundesanstalt für Geowissenschaften und Rohstoffe, Hannover
• Investigations on population genetics and the influence of hydrothermal activity on bivalve growth at MAR hydrothermal vents.
  Responsible: C. Borowski, Max Planck Institute of Marine Microbiology, Bremen
• Gas chemistry and carbon cycling at hydrothermal systems along the Mid-Atlantic Ridge: time- and space-referenced biogeochemical and isotopic investigations.
  Responsible: R. Seifert, Institut für Biogeochemie und Meereschemie, Universität Hamburg
• Logatchev longterm hydrothermal field environmental monitoring.
  Responsible: H. Villinger and M. Fabian, Fachbereich Geowissenschaften, Universität Bremen
• Primordial Helium and Vertical Mixing at the Midatlantic Ridge, 2°S-11°S.
  Responsible: M. Rhein, Institut für Umweltphysik, Universität Bremen
• Biosignatures in precipitates and altered rocks at hydrothermal systems of the Mid-Atlantic Ridge: organic geochemistry, microbiology and petrography.
  Responsible: R. Seifert and M. Blumenberg, Institut für Biogeochemie und Meereschemie, Hamburg, M. Perner, Biozentrum Klein Flottbek, Hamburg, S. Petersen and K. Lackschewitz, , IFM-GEOMAR Leibniz-Institut für Meereswissenschaften
• Mircrobial communities and metabolisms responsible for chemolithoautotrophic energy and carbon transfer at the Mid-Atlantic Ridge.
  Responsible: M. Perner, Biozentrum Klein Flottbek, Hamburg
• Opaque phase petrology and geochemical modeling as a guide to abiotic organic synthesis in the Mid-Atlantic Ridge 15°N area.
  Responsible: W. Bach, Universität Bremen
• Metagenomic studies of the diversity and function of chemosynthetic microbial communities at oceanic spreading zones.
  Responsible: A. Meyerdierks, Max Planck Institute, Bremen
• Sulphur isotopic investigation of dissolved and solid sulphur phases in fluids, mineral precipitates, sediments and rock samples from the Mid-Atlantic Ridge.
  Responsible: H. Strauss, Universität Münster
• Geophysical study of the Logatchev hydrothermal vent field and its magmatic plumbing system.
  Responsible: I. Grevemeyer, J. Bialas, M. Jegen, W. Weinrebe, IFM-GEOMAR Leibniz-Institut für Meereswissenschaften, T. Dahm, Universität Hamburg
• The geology and structure of the Mid-Atlantic Ridge near Ascension Island.
  Responsible: C. W. Devey, IFM-GEOMAR Leibniz-Institut für Meereswissenschaften, Kiel
• Coordination of the Priority Program 1144 “From the mantle to the ocean”.
  Responsible: C. W. Devey, IFM-GEOMAR Leibniz-Institut für Meereswissenschaften, Kiel
• Emission and plume transport of methane and hydrogen from the Mid-Atlantic Ridge.
  Responsible: R. Keir, IFM-GEOMAR Leibniz-Institut für Meereswissenschaften, Kiel, G. Rehder and O. Schmale, Institut für Ostseeforschung
• High resolution volcanology and geochemistry of mid ocean ridge segments flanking the 9°40’S melt anomaly and the Ascension hot spot.
  Responsible: C. Münker, Universität Münster and H. Paulick, Universität Bonn
• The Influence of Phase Separation on the Ca isotope Composition and Fluxes in Hydrothermal Systems.
  Responsible: A. Eisenhauer, K. S. Lackschewitz, IFM-GEOMAR Leibniz-Institut für Meereswissenschaften, Kiel
• Variability of the near bottom hydrography, currents and mixing processes in the Logatchev-Field.
  Responsible: J. Fischer and M. Visbeck, IFM-GEOMAR Leibniz-Institut für Meereswissenschaften
• Carbonate Precipitation Induced by Serpentinization on the Mid-Atlantic Ridge.
  Responsible: J. Peckmann, Forschungzentrum Ozeanränder Bremen