Search Results - "Kustka, A. B"
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Amazon River enhances diazotrophy and carbon sequestration in the tropical North Atlantic Ocean
Published in Proceedings of the National Academy of Sciences - PNAS (29-07-2008)“…The fresh water discharged by large rivers such as the Amazon is transported hundreds to thousands of kilometers away from the coast by surface plumes. The…”
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Uptake of molybdenum and vanadium by a nitrogen-fixing soil bacterium using siderophores
Published in Nature geoscience (01-04-2008)“…Nitrogen fixation, the reaction that transforms atmospheric nitrogen into bioavailable ammonia and is responsible for the supply of nitrogen to Earth's…”
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The Role of Unchelated Fe in the Iron Nutrition of Phytoplankton
Published in Limnology and oceanography (01-01-2008)“…The important question of iron bioavailability in the sea has become complicated by the discovery that marine phytoplankton can take up Fe bound in very stable…”
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Phosphorus limitation of nitrogen fixation by Trichodesmium in the central Atlantic Ocean
Published in Nature (London) (03-05-2001)“…Marine fixation of atmospheric nitrogen is believed to be an important source of biologically useful nitrogen to ocean surface waters, stimulating productivity…”
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A General Kinetic Model for Iron Acquisition by Eukaryotic Phytoplankton
Published in Limnology and oceanography (01-05-2005)“…The conventional model of iron uptake in marine eukaryotic phytoplankton-the Fe′ model-suggests a dependency of uptake rate on the concentration of unchelated…”
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Extracellular Production of Superoxide by Marine Diatoms: Contrasting Effects on Iron Redox Chemistry and Bioavailability
Published in Limnology and oceanography (01-07-2005)“…We report the extracellular production of superoxide in cultures of the marine diatoms Thalassiosira weissflogii and Thalassiosira pseudonana. In EDTA-buffered…”
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Iron Requirements for Dinitrogen- and Ammonium-Supported Growth in Cultures of Trichodesmium (IMS 101): Comparison with Nitrogen Fixation Rates and Iron: Carbon Ratios of Field Populations
Published in Limnology and oceanography (01-09-2003)“…We quantified the relationships among the specific growth rate, intracellular iron content, and steady state iron uptake rate for cultures of the marine…”
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Simultaneous determination of iron reduction and uptake by phytoplankton
Published in Limnology and oceanography, methods (01-05-2004)“…We have developed a new method to assess simultaneously the rates of biological reduction of Fe(III)‐ligand complexes at nanomolar concentrations and iron…”
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