| Nitrogen cycles: past, present, and future JN Galloway, FJ Dentener, DG Capone, EW Boyer, RW Howarth, ... Biogeochemistry 70 (2), 153-226, 2004 | 4340 | 2004 |
| Oceanic metagenomics: the Sorcerer II global ocean sampling expedition: northwest Atlantic through eastern tropical Pacific DB Rusch, AL Halpern, G Sutton, KB Heidelberg, S Williamson, ... PLoS biology 5 (3), 2007 | 1969 | 2007 |
| VERTEX: carbon cycling in the northeast Pacific. JH Martin, GA Knauer, DM Karl, WW Broenkow Deep-Sea Research 34 (2), 267-285, 1987 | 1822 | 1987 |
| Archaeal dominance in the mesopelagic zone of the Pacific Ocean MB Karner, EF DeLong, DM Karl Nature 409 (6819), 507-510, 2001 | 1421 | 2001 |
| Community genomics among stratified microbial assemblages in the ocean's interior EF DeLong, CM Preston, T Mincer, V Rich, SJ Hallam, NU Frigaard, ... Science 311 (5760), 496-503, 2006 | 1237 | 2006 |
| 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 Nature 388 (6642), 533, 1997 | 907 | 1997 |
| Phosphate depletion in the western North Atlantic Ocean J Wu, W Sunda, EA Boyle, DM Karl Science 289 (5480), 759-762, 2000 | 696 | 2000 |
| Dinitrogen fixation in the world’s oceans D Karl, A Michaels, B Bergman, D Capone, E Carpenter, R Letelier, ... The nitrogen cycle at regional to global scales, 47-98, 2002 | 689 | 2002 |
| Unicellular cyanobacteria fix N 2 in the subtropical North Pacific Ocean JP Zehr, JB Waterbury, PJ Turner, JP Montoya, E Omoregie, GF Steward, ... Nature 412 (6847), 635-638, 2001 | 687 | 2001 |
| Cellular nucleotide measurements and applications in microbial ecology. DM Karl Microbiological Reviews 44 (4), 739, 1980 | 643 | 1980 |
| Present and future global distributions of the marine Cyanobacteria Prochlorococcus and Synechococcus P Flombaum, JL Gallegos, RA Gordillo, J Rincón, LL Zabala, N Jiao, ... Proceedings of the National Academy of Sciences 110 (24), 9824-9829, 2013 | 551 | 2013 |
| Phytoplankton in the ocean use non-phosphorus lipids in response to phosphorus scarcity BAS Van Mooy, HF Fredricks, BE Pedler, ST Dyhrman, DM Karl, ... Nature 458 (7234), 69-72, 2009 | 522 | 2009 |
| Revisiting carbon flux through the ocean's twilight zone KO Buesseler, CH Lamborg, PW Boyd, PJ Lam, TW Trull, RR Bidigare, ... Science 316 (5824), 567-570, 2007 | 507 | 2007 |
| The Hawaii Ocean Time-series (HOT) program: Background, rationale and field implementation DM Karl, R Lukas Deep Sea Research Part II: Topical Studies in Oceanography 43 (2-3), 129-156, 1996 | 492 | 1996 |
| Quantitative distribution of presumptive archaeal and bacterial nitrifiers in Monterey Bay and the North Pacific Subtropical Gyre TJ Mincer, MJ Church, LT Taylor, C Preston, DM Karl, EF DeLong Environmental microbiology 9 (5), 1162-1175, 2007 | 468 | 2007 |
| A sea of change: biogeochemical variability in the North Pacific Subtropical Gyre DM Karl Ecosystems 2 (3), 181-214, 1999 | 432 | 1999 |
| MAGIC: A sensitive and precise method for measuring dissolved phosphorus in aquatic environments DM Karl, G Tien Limnology and Oceanography 37 (1), 105-116, 1992 | 424 | 1992 |
| Elemental composition of marine Prochlorococcus and Synechococcus: Implications for the ecological stoichiometry of the sea S Bertilsson, O Berglund, DM Karl, SW Chisholm Limnology and oceanography 48 (5), 1721-1731, 2003 | 413 | 2003 |
| Seasonal and interannual variability in primary production and particle flux at Station ALOHA DM Karl, JR Christian, JE Dore, DV Hebel, RM Letelier, LM Tupas, ... Deep Sea Research Part II: Topical Studies in Oceanography 43 (2-3), 539-568, 1996 | 413 | 1996 |
| Physical and biogeochemical modulation of ocean acidification in the central North Pacific JE Dore, R Lukas, DW Sadler, MJ Church, DM Karl Proceedings of the National Academy of Sciences 106 (30), 12235-12240, 2009 | 409 | 2009 |
