Projects funded from 2003-2005 in the framework of the DFG-Priority Program 1144 "From Mantle to Ocean: Energy-, Material- and Life-cycles at Spreading Axes"

• Metagenomic studies of the diversity and function of chemosynthetic microbial communities.
  Responsible: R. Amann and A. Meyerdiercks

• Passive electromagnetic and seismological measurements to study the deep melt structure beneath the Mid Atlantic Ridge (MAR).
  Responsible: T. Dahm and M. Jegen

• Coordination of the Priority Program 1144 "From the mantle to the ocean: energy, material and life cycles at spreading axes.
  Responsible: C.W. Devey

• Geobiological coupling between hydrothermal vent fluids and symbiotic primary producers at spreading axes.
  Responsible: N. Dubilier

• The role of high- and low-temperature ocean crust alteration for the marine calcium budget.
  Responsible: A. Eisenhauer, B. Bock, F. Hauff and K.S. Lackschewitz

• U-Th-Ra disequilibria in basalts from the Mid-Atlantic Ridge 6-11°S: Constraints on melting, mixing and time-scales of magmatic processes.
  Responsible: K. Haase and F. Hauff

• The genetic relationship between ultramafic-hosted massive sulfides and their host rocks: petrological, geochemical and isotopic investigations of hydrothermal systems along the Mid-Atlantic Ridge between 14°45'N and 15°05'N.
  Responsible: P.M. Herzig and T. Kuhn

• Low pressure differentiation of basalts at the Mid-Atlantic Ridge near Ascension - Constraints from experiments at controlled volatile and oxygen fugacities.
  Responsible: F. Holtz and J. Koepke

• Microbial diversity and key activities at hydrothermal habitats of the Mid-Atlantic Ridge.
  Responsible: J.F. Imhoff

• Methane transport to the ocean from the Mid-Atlantic Ridge, 2°S to 11°S.
  Responsible: R. Keir, G. Rehder and A. Eisenhauer

• Hydrothermal fluids at the Mid-Atlantic Ridge (15°N) as media for the transport of energy and mass from the crust into the hydro- and biosphere.
  Responsible: A. Koschinsky-Fritsche, M. Bau und C.-D. Garbe-Schoenberg

• Microbial interaction of fluid and mineral phases at hydrothermal vents of the Mid-Atlantic Ridge.
  Responsible: J. Kuever

• High- and low-temperature alteration of ultramafic oceanic crust: mineralogy, geochemistry and isotope characteristics of hydrothermal systems at the Mid Atlantic Ridge between 14° and 15°N.
  Responsible: K.S. Lackschewitz, C.W. Devey and A. Eisenhauer

• Durch Serpentinisierung induzierte Karbonat-Fällung am mittelatlantischen Rücken.
  Responsible: J. Peckmann, D. Birgel

• Geobiology of modern and ancient endolithic microorganisms within ultramafic rocks on the Mid-Atlantik Ridge.
  Responsible: J. Reitner, G. Schumann, J. Peckmann and M. Böttcher

• Geophysical studies near the Ascension transform: evolution of ridge segmentation and crustal structure.
  Responsible: T.J. Reston, J. Bialas and I. Grevemeyer

• Primordial helium and vertical mixing at the Mid Atlantic Ridge, 2°-11°S.
  Responsible: M. Rhein

• Temporal evolution of hydrothermal systems at the Mid-Atlantic Ridge (14°45 - 15°05 N).
  Responsible: J. Scholten and A. Eisenhauer

• Gas chemistry and carbon cycling at hydrothermal systems along the Mid-Atlantic Ridge: time– and space–referenced biogeochemical and isotopic invesigations.
  Responsible: R. Seifert

• Logatchev longterm hydrothermal field environmental monitoring.
  Responsible: H. Villinger and C. Waldmann