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Large-scale distribution of Atlantic nitrogen fixation controlled by iron availability
Oceanic fixed-nitrogen concentrations are controlled by the balance between nitrogen fixation and denitrification1, 2, 3, 4. A number of factors, including iron limitation5, 6, 7, can restrictExpand
Phytoplankton pigments and functional types in the Atlantic Ocean: A decadal assessment, 1995–2005
The phytoplankton pigment composition (chlorophylls and carotenoids) from 17 Atlantic Meridional Transect (AMT) cruises over the period 1995–2005 was analysed to determine the distributions ofExpand
Southern Ocean deep-water carbon export enhanced by natural iron fertilization
Data from the CROZEX experiment in the Southern Ocean is reported to test the hypothesis that the observed north–south gradient in phytoplankton concentrations in the vicinity of the Crozet Islands is induced by natural iron fertilization that results in enhanced organic carbon flux to the deep ocean. Expand
Rapid growth rates of aerobic anoxygenic phototrophs in the ocean.
Bacteriochlorophyll-containing bacteria in the euphotic zone of the oligotrophic gyres grow at rates of about one division per day and in the more productive regions up to three divisions per day, in striking contrast with the relatively slow growth rates of the total bacterial community. Expand
Database of diazotrophs in global ocean: abundance, biomass and nitrogen fixation rates
This database is limited spatially, lacking large regions of the ocean especially in the Indian Ocean, but can nevertheless be used to study spatial and temporal distributions and variations of marine N2 fixation, to validate geochemical estimates and to parameterize and validate biogeochemical models. Expand
A global diatom database – abundance, biovolume and biomass in the world ocean
This first attempt to compile the largest possible body of data available from different databases as well as from individual published or unpublished datasets regarding diatom distribution in the world ocean using a single standardized method is compiled. Expand
The Biological carbon pump in the North Atlantic
Abstract Mediated principally by the sinking of organic rich particles from the upper ocean, the Biological Carbon Pump (BCP) is a significant component of the global carbon cycle. It transfersExpand
Large-scale latitudinal distribution of Trichodesmium spp. in the Atlantic Ocean
High Trichodesmium abundance was found to be correlated with shallow mixed layer depth and high estimated iron deposition to the surface ocean, but not with temperature, nitrate or the concentration of total dissolvable iron in sea water. Expand
Iron–light interactions during the CROZet natural iron bloom and EXport experiment (CROZEX): II—Taxonomic responses and elemental stoichiometry
The CROZet natural iron bloom and EXport experiment (CROZEX) investigated the annual phytoplankton bloom that occurs in the vicinity of the Crozet plateau in the Polar Frontal Zone (PFZ) of theExpand
Major contribution of diatom resting spores to vertical flux in the sub-polar North Atlantic
Examination of plankton community composition from surface waters and from sediment traps at depths down to 750 m highlights how non-dominant species and transient life stages can contribute more to carbon flux than their more abundant counterparts. Expand