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VERTEX: carbon cycling in the northeast Pacific
Abstract Particulate organic carbon fluxes were measured with free-floating particle traps at nine locations during VERTEX and related studies. Examination of these data indicated that there wasExpand
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Archaeal dominance in the mesopelagic zone of the Pacific Ocean
The ocean's interior is Earth's largest biome. Recently, cultivation-independent ribosomal RNA gene surveys have indicated a potential importance for archaea in the subsurface ocean. But quantitativeExpand
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Quantitative distribution of presumptive archaeal and bacterial nitrifiers in Monterey Bay and the North Pacific Subtropical Gyre.
The recent isolation of the ammonia-oxidizing crenarchaeon Nitrosopumilus maritimus has expanded the known phylogenetic distribution of nitrifying phenotypes beyond the domain Bacteria. To furtherExpand
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Community Genomics Among Stratified Microbial Assemblages in the Ocean's Interior
Microbial life predominates in the ocean, yet little is known about its genomic variability, especially along the depth continuum. We report here genomic analyses of planktonic microbial communitiesExpand
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Phosphate depletion in the western North Atlantic Ocean.
Surface waters of the subtropical Sargasso Sea contain dissolved inorganic phosphate (DIP) concentrations of 0.2 to 1.0 nanomolar, which are sufficiently low to result in phosphorus control ofExpand
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Present and future global distributions of the marine Cyanobacteria Prochlorococcus and Synechococcus
The Cyanobacteria Prochlorococcus and Synechococcus account for a substantial fraction of marine primary production. Here, we present quantitative niche models for these lineages that assess presentExpand
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Physical and biogeochemical modulation of ocean acidification in the central North Pacific
Atmospheric carbon dioxide (CO2) is increasing at an accelerating rate, primarily due to fossil fuel combustion and land use change. A substantial fraction of anthropogenic CO2 emissions is absorbedExpand
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Elemental composition of marine Prochlorococcus and Synechococcus: Implications for the ecological stoichiometry of the sea
The elemental composition of marine cyanobacteria is an important determinant of the ecological stoichiometry in low-latitude marine biomes. We analyzed the cellular carbon (C), nitrogen (N), andExpand
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The role of nitrogen fixation in biogeochemical cycling in the subtropical North Pacific Ocean
Seven years of time-series observations of biogeochemical processes in the subtropical North Pacific Ocean gyre have revealed dramatic changes in the microbial community structure and in theExpand
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Unicellular cyanobacteria fix N2 in the subtropical North Pacific Ocean
Fixed nitrogen (N) often limits the growth of organisms in terrestrial and aquatic biomes, and N availability has been important in controlling the CO2 balance of modern and ancient oceans. TheExpand
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