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Global Iron Connections Between Desert Dust, Ocean Biogeochemistry, and Climate
The environmental conditions of Earth, including the climate, are determined by physical, chemical, biological, and human interactions that transform and transport materials and energy. This is theExpand
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Methodological Underestimation of Oceanic Nitrogen Fixation Rates
The two commonly applied methods to assess dinitrogen (N2) fixation rates are the 15N2-tracer addition and the acetylene reduction assay (ARA). Discrepancies between the two methods as well asExpand
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Diazotrophic Diversity and Distribution in the Tropical and Subtropical Atlantic Ocean
ABSTRACT To understand the structure of marine diazotrophic communities in the tropical and subtropical Atlantic Ocean, the molecular diversity of the nifH gene was studied by nested PCRExpand
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Abundances and Distributions of the Dominant nifH Phylotypes in the Northern Atlantic Ocean
ABSTRACT Understanding the factors that influence the distribution and abundance of marine diazotrophs is important in order to assess their role in the oceanic nitrogen cycle. Environmental DNAExpand
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A mesoscale phytoplankton bloom in the polar Southern Ocean stimulated by iron fertilization
Changes in iron supply to oceanic plankton are thought to have a significant effect on concentrations of atmospheric carbon dioxide by altering rates of carbon sequestration, a theory known as theExpand
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Impacts of Atmospheric Anthropogenic Nitrogen on the Open Ocean
Increasing quantities of atmospheric anthropogenic fixed nitrogen entering the open ocean could account for up to about a third of the ocean's external (nonrecycled) nitrogen supply and up to ∼3% ofExpand
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Whole-cell response of the pennate diatom Phaeodactylum tricornutum to iron starvation
Marine primary productivity is iron (Fe)-limited in vast regions of the contemporary oceans, most notably the high nutrient low chlorophyll (HNLC) regions. Diatoms often form large blooms upon theExpand
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Doubling of marine dinitrogen-fixation rates based on direct measurements
Biological dinitrogen fixation provides the largest input of nitrogen to the oceans, therefore exerting important control on the ocean's nitrogen inventory and primary productivity. Nitrogen-isotopeExpand
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Production of oceanic nitrous oxide by ammonia-oxidizing archaea
Abstract. The recent finding that microbial ammonia oxidation in the ocean is performed by archaea to a greater extent than by bacteria has drastically changed the view on oceanic nitrification. TheExpand
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