| Nitrogen cycles: past, present, and future JN Galloway, FJ Dentener, DG Capone, EW Boyer, RW Howarth, ... Biogeochemistry 70 (2), 153-226, 2004 | 4823 | 2004 |
| The Sorcerer II global ocean sampling expedition: northwest Atlantic through eastern tropical Pacific DB Rusch, AL Halpern, G Sutton, KB Heidelberg, S Williamson, ... PLoS Biol 5 (3), e77, 2007 | 2063 | 2007 |
| VERTEX: carbon cycling in the northeast Pacific. JH Martin, GA Knauer, DM Karl, WW Broenkow Deep-Sea Research 34 (2), 267-285, 1987 | 1919 | 1987 |
| Archaeal dominance in the mesopelagic zone of the Pacific Ocean MB Karner, EF DeLong, DM Karl Nature 409 (6819), 507-510, 2001 | 1495 | 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 | 1320 | 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), 533-538, 1997 | 951 | 1997 |
| Phosphate depletion in the western North Atlantic Ocean J Wu, W Sunda, EA Boyle, DM Karl Science 289 (5480), 759-762, 2000 | 732 | 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 | 728 | 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 | 712 | 2001 |
| 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 | 708 | 2013 |
| Cellular nucleotide measurements and applications in microbial ecology. DM Karl Microbiological Reviews 44 (4), 739, 1980 | 662 | 1980 |
| 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 | 570 | 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 | 550 | 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 | 524 | 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 | 498 | 2007 |
| Ocean systems HO Pörtner, DM Karl, PW Boyd, W Cheung, SE Lluch-Cota, Y Nojiri, ... Climate change 2014: impacts, adaptation, and vulnerability. Part A: global …, 2014 | 462 | 2014 |
| 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 | 460 | 2009 |
| A sea of change: biogeochemical variability in the North Pacific Subtropical Gyre DM Karl Ecosystems 2 (3), 181-214, 1999 | 454 | 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 | 446 | 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 | 432 | 2003 |
