| Discipline name | D-Index | World Ranking | Current World Ranking | National Ranking | Current National Ranking | Publications | Citations |
|---|---|---|---|---|---|---|---|
| Earth Science | 57 | 2331 | 2115 | 1 | 1 | 256 | 8896 |
The chart shows the history of publications by Jan Jacob Keizer between 1996 and 2026, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Jan Jacob Keizer published across 31 years, from 1996 to 2026, averaging 11.5 papers a year. Output peaked at 38 publications in 2016. 13 of the 356 publications appeared in the last two years.
356 publications in total across all disciplines
| Year | Publications |
|---|---|
| 1996 | 1 |
| 1997 | 0 |
| 1998 | 0 |
| 1999 | 0 |
| 2000 | 3 |
| 2001 | 0 |
| 2002 | 3 |
| 2003 | 2 |
| 2004 | 8 |
| 2005 | 8 |
| 2006 | 4 |
| 2007 | 1 |
| 2008 | 5 |
| 2009 | 6 |
| 2010 | 13 |
| 2011 | 6 |
| 2012 | 14 |
| 2013 | 17 |
| 2014 | 24 |
| 2015 | 28 |
| 2016 | 38 |
| 2017 | 24 |
| 2018 | 19 |
| 2019 | 19 |
| 2020 | 28 |
| 2021 | 18 |
| 2022 | 24 |
| 2023 | 13 |
| 2024 | 17 |
| 2025 | 12 |
| 2026 | 1 |
| Total | 356 |
The chart shows the distribution of publications by all Research.com ranked scientists in the field of Earth Science in 2026. The highlighted bar marks where Jan Jacob Keizer sits on this spectrum.
This scientist: 256 publications — 79th percentile
79% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 603 publications or more.
| Publications | Scientists | This scientist |
|---|---|---|
| 38–47 | 5 | |
| 48–57 | 33 | |
| 58–67 | 94 | |
| 68–77 | 161 | |
| 78–87 | 278 | |
| 88–97 | 376 | |
| 98–107 | 404 | |
| 108–117 | 484 | |
| 118–127 | 540 | |
| 128–137 | 557 | |
| 138–147 | 491 | |
| 148–157 | 495 | |
| 158–167 | 458 | |
| 168–177 | 490 | |
| 178–187 | 414 | |
| 188–197 | 401 | |
| 198–207 | 333 | |
| 208–217 | 292 | |
| 218–227 | 290 | |
| 228–237 | 262 | |
| 238–247 | 243 | |
| 248–257 | 208 | 256 |
| 258–267 | 185 | |
| 268–277 | 147 | |
| 278–287 | 128 | |
| 288–297 | 119 | |
| 298–307 | 120 | |
| 308–317 | 107 | |
| 318–327 | 93 | |
| 328–337 | 87 | |
| 338–347 | 64 | |
| 348–357 | 87 | |
| 358–367 | 60 | |
| 368–377 | 60 | |
| 378–387 | 34 | |
| 388–397 | 50 | |
| 398–407 | 44 | |
| 408–417 | 31 | |
| 418–427 | 39 | |
| 428–437 | 27 | |
| 438–447 | 36 | |
| 448–457 | 27 | |
| 458–467 | 29 | |
| 468–477 | 30 | |
| 478–487 | 19 | |
| 488–497 | 15 | |
| 498–507 | 18 | |
| 508–517 | 19 | |
| 518–527 | 16 | |
| 528–537 | 10 | |
| 538–547 | 11 | |
| 548–557 | 14 | |
| 558–567 | 11 | |
| 568–577 | 7 | |
| 578–587 | 14 | |
| 588–597 | 5 | |
| 598–602 | 4 | |
| 603+ | 100 |
The chart shows the D-index (discipline H-index) distribution of Earth Science scientists ranked by Research.com in 2026. The highlighted bar marks where Jan Jacob Keizer sits on this spectrum.
This scientist: 57 D-Index — 76th percentile
76% of scientists in this discipline score the same or lower.
The last bar groups every scientist with 106 D-Index or more.
| D-Index | Scientists | This scientist |
|---|---|---|
| 30 | 144 | |
| 31 | 215 | |
| 32 | 278 | |
| 33 | 379 | |
| 34 | 366 | |
| 35 | 372 | |
| 36 | 389 | |
| 37 | 366 | |
| 38 | 344 | |
| 39 | 349 | |
| 40 | 296 | |
| 41 | 289 | |
| 42 | 277 | |
| 43 | 279 | |
| 44 | 248 | |
| 45 | 257 | |
| 46 | 212 | |
| 47 | 202 | |
| 48 | 207 | |
| 49 | 204 | |
| 50 | 183 | |
| 51 | 178 | |
| 52 | 182 | |
| 53 | 178 | |
| 54 | 163 | |
| 55 | 117 | |
| 56 | 163 | |
| 57 | 120 | 57 |
| 58 | 113 | |
| 59 | 136 | |
| 60 | 135 | |
| 61 | 96 | |
| 62 | 103 | |
| 63 | 83 | |
| 64 | 103 | |
| 65 | 83 | |
| 66 | 89 | |
| 67 | 92 | |
| 68 | 89 | |
| 69 | 78 | |
| 70 | 75 | |
| 71 | 53 | |
| 72 | 62 | |
| 73 | 54 | |
| 74 | 35 | |
| 75 | 52 | |
| 76 | 50 | |
| 77 | 32 | |
| 78 | 37 | |
| 79 | 20 | |
| 80 | 33 | |
| 81 | 36 | |
| 82 | 34 | |
| 83 | 34 | |
| 84 | 24 | |
| 85 | 19 | |
| 86 | 18 | |
| 87 | 26 | |
| 88 | 30 | |
| 89 | 17 | |
| 90 | 21 | |
| 91 | 19 | |
| 92 | 15 | |
| 93 | 14 | |
| 94 | 20 | |
| 95 | 9 | |
| 96 | 10 | |
| 97 | 15 | |
| 98 | 13 | |
| 99 | 3 | |
| 100 | 13 | |
| 101 | 3 | |
| 102 | 9 | |
| 103 | 4 | |
| 104 | 6 | |
| 105 | 6 | |
| 106+ | 98 |
Jan Jacob Keizer is affiliated with the University of Aveiro in Portugal. Their research primarily lies within the fields of Environmental Science and Agricultural and Biological Sciences. Within these fields, Keizer has a focused involvement in several subfields, including Global and Planetary Change, Soil Science, Management, Monitoring, Policy and Law, Earth-Surface Processes, and Ecology.
The main topics in Keizer's work cover a range of environmental and ecological concerns:
Keizer has a significant number of publications, with frequent contributions to several academic journals. Key publication venues include:
Selected recent papers authored or coauthored by Keizer demonstrate a focus on environmental impacts and mitigation strategies:
Keizer frequently collaborates with other researchers. Regular coauthors include:
A. Muzylo;P. Llorens;F. Valente;J.J. Keizer
T. Santos;J.L. Tellería
Frank G.A. Verheijen;Anna Zhuravel;Flávio C. Silva;António Amaro
D. Serpa;J.P. Nunes;J. Santos;E. Sampaio
D. C. S. Vieira;C. Fernández;J. A. Vega;J. J. Keizer
S. H. Doerr;C. T. Llewellyn;P. Douglas;C. P. Morley
Sergio A. Prats;Lee H. MacDonald;Magda Monteiro;Antonio J.D. Ferreira
Vikas Abrol;Meni Ben-Hur;Frank G. A. Verheijen;Jacob J. Keizer
Isabel Campos;Nelson Abrantes;Jan Jacob Keizer;Carlos Vale
A.J.D. Ferreira;A.J.D. Ferreira;C.O.A. Coelho;C.J. Ritsema;A.K. Boulet
Antonio Girona-García;Diana C.S. Vieira;Joana Silva;Cristina Fernández
Sérgio Alegre Prats;Maruxa Cortizo Malvar;Diana Catarina Simões Vieira;Lee MacDonald
João Rocha;Cláudia Carvalho-Santos;Cláudia Carvalho-Santos;Paulo Diogo;Pedro Beça
J.J. Keizer;S.H. Doerr;M.C. Malvar;S.A. Prats
Sergio Alegre Prats;Martinho António dos Santos Martins;Maruxa Cortizo Malvar;Meni Ben-Hur
Aud Helen Halbritter Rechsteiner;Hans J. De Boeck;Amy Elizabeth Eycott;Amy Elizabeth Eycott;Sabine Reinsch
María Fernández-Raga;Roberto Fraile;Jan Jacob Keizer;María Eufemia Varela Teijeiro
Sergio Alegre Prats;Joseph W. Wagenbrenner;Martinho António Santos Martins;Maruxa Cortizo Malvar
Vera Silva;Joana Luísa Pereira;Isabel Campos;Jan Jacob Keizer
A.J.D. Ferreira;C.O.A. Coelho;A.K. Boulet;G. Leighton-Boyce
J.P. Nunes;J. Seixas;J.J. Keizer
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Exploring online degrees related to Earth Science can open various career pathways. For example, a creative supplement to scientific studies might be an online degree in photography. This skill is valuable for capturing geological features or conducting environmental documentation.
Veterans interested in expanding their skills may find tailored options such as photography programs online for veterans, which offer flexible, accessible education with benefits suited to their needs. These programs support transitions into civilian careers, including roles that blend science and visual storytelling.
Language proficiency is another complementary field. Short, focused programs like the short Spanish degrees can enhance communication abilities, essential for global environmental initiatives.
Military veterans specifically can also leverage options such as the online Spanish degree for military veterans. These programs are designed to accommodate their schedules and backgrounds, enabling them to progress confidently into new careers bridging science and multicultural contexts.
NEIKER, the Basque Institute for Agricultural Research and Development
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University of Kentucky
University of Waikato
The University of Texas MD Anderson Cancer Center
University of Ulm
University of Veterinary Medicine Hannover, Foundation
Seoul National University
University of Manchester
Natera (United States)
Institut des Sciences de la Terre de Paris
Skidaway Institute of Oceanography
The University of Texas Medical Branch at Galveston
Huazhong University of Science and Technology
Fudan University
University of Adelaide
