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- Publications
- Influence
VERTEX: carbon cycling in the northeast Pacific
- J. H. Martin, G. Knauer, D. Karl, W. W. Broenkow
- Geography
- 1 February 1987
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 was… Expand
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 quantitative… Expand
Quantitative distribution of presumptive archaeal and bacterial nitrifiers in Monterey Bay and the North Pacific Subtropical Gyre.
- T. Mincer, M. Church, L. T. Taylor, Christina Preston, D. Karl, E. DeLong
- Biology, Medicine
- Environmental microbiology
- 1 May 2007
The recent isolation of the ammonia-oxidizing crenarchaeon Nitrosopumilus maritimus has expanded the known phylogenetic distribution of nitrifying phenotypes beyond the domain Bacteria. To further… Expand
Community Genomics Among Stratified Microbial Assemblages in the Ocean's Interior
- E. DeLong, C. Preston, +9 authors D. Karl
- Biology, Medicine
- Science
- 27 January 2006
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 communities… Expand
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 of… Expand
Present and future global distributions of the marine Cyanobacteria Prochlorococcus and Synechococcus
- P. Flombaum, J. L. Gallegos, +10 authors A. Martiny
- Biology, Medicine
- Proceedings of the National Academy of Sciences
- 23 May 2013
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 present… Expand
Physical and biogeochemical modulation of ocean acidification in the central North Pacific
- J. E. Dore, R. Lukas, Daniel W. Sadler, M. Church, D. Karl
- Environmental Science, Medicine
- Proceedings of the National Academy of Sciences
- 28 July 2009
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 absorbed… Expand
Elemental composition of marine Prochlorococcus and Synechococcus: Implications for the ecological stoichiometry of the sea
- S. Bertilsson, O. Berglund, D. Karl, S. Chisholm
- Biology
- 1 September 2003
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), and… Expand
The role of nitrogen fixation in biogeochemical cycling in the subtropical North Pacific Ocean
- D. Karl, R. Letelier, L. Tupas, J. Dore, J. Christian, D. Hebel
- Biology
- Nature
- 7 August 1997
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 the… Expand
Unicellular cyanobacteria fix N2 in the subtropical North Pacific Ocean
- J. Zehr, J. B. Waterbury, +5 authors D. Karl
- Biology, Medicine
- Nature
- 9 August 2001
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. The… Expand