Citation Rankings
Highly Cited Researchers
World Highly Cited Researchers CitationEngineering & Technology / Marine Sciences and Engineering Rankings 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Total Citation Counts Rankings
Ranking Based On Selection :1
Biological Oceanography
nutrients
phytoplankton
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
131,823
52,882
0.401
* Total Citation Counts Rankings
Ranking Based On Selection :2
organic geochemistry
microbiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101,730
35,970
0.354
* Total Citation Counts Rankings
Ranking Based On Selection :3
Microplastics
ecology of coastal defences
marine ecology
marine pollution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,857
75,261
0.746
* Total Citation Counts Rankings
Ranking Based On Selection :4
Hydrological Modelling
Climate analysis
Statistics
Programming
Oceanography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,247
22,078
0.250
* Total Citation Counts Rankings
Ranking Based On Selection :5
Chemical Oceanographer Carbon Cycle Ocean Acidiification
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,841
32,450
0.406
* Total Citation Counts Rankings
Ranking Based On Selection :6
Marine ecology
conservation biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78,419
39,951
0.509
* Total Citation Counts Rankings
Ranking Based On Selection :7
Physical Chemistry of Natural Waters
Chemical Oceanography
Marine Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,215
20,143
0.261
* Total Citation Counts Rankings
Ranking Based On Selection :8
Environment
Climate Change
Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76,882
29,439
0.383
* Total Citation Counts Rankings
Ranking Based On Selection :9
microbiology
oceanography
earth sciences
biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,720
24,563
0.329
* Total Citation Counts Rankings
Ranking Based On Selection :10
Climate change
climate variability
climate modeling
ocean-atmospheric dynamics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,452
37,718
0.528
* Total Citation Counts Rankings
Ranking Based On Selection :11
Marine biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,072
18,993
0.279
* Total Citation Counts Rankings
Ranking Based On Selection :12
Radiocarbon dating and calibration
marine and freshwater reservoir corrections
carbon cycling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
67,451
23,577
0.350
* Total Citation Counts Rankings
Ranking Based On Selection :13
Molucular biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
63,452
34,781
0.548
* Total Citation Counts Rankings
Ranking Based On Selection :14
marine ecology
paleobiology
and conservation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,334
17,776
0.285
* Total Citation Counts Rankings
Ranking Based On Selection :15
plankton ecosystems
carbon cycling in the ocean
Earth System science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,060
35,856
0.587
* Total Citation Counts Rankings
Ranking Based On Selection :16
Coastal Systems
Climate Change
Impacts
Adaptation
Integrated Assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,050
29,296
0.480
* Total Citation Counts Rankings
Ranking Based On Selection :17
comparative immunology
fish immunology
marine microbiology
marine biotechnology
SOI-USTAN
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,703
32,113
0.529
* Total Citation Counts Rankings
Ranking Based On Selection :18
microbiology
marine microbiology
microbial genomics
metagenomics
microbial ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,731
16,531
0.277
* Total Citation Counts Rankings
Ranking Based On Selection :19
Ocean optics (海洋光学）
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,375
24,958
0.428
* Total Citation Counts Rankings
Ranking Based On Selection :20
Biological oceanography
Marine microbiology
Microbial ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,232
23,117
0.397
* Total Citation Counts Rankings
Ranking Based On Selection :21
Marine Ecology
Evolutionary Biology
Conservation Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,679
19,117
0.337
* Total Citation Counts Rankings
Ranking Based On Selection :22
Oceanography
Physical Oceanography
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,225
24,505
0.436
* Total Citation Counts Rankings
Ranking Based On Selection :23
climate
biogeochemical cycles
energy / environment
ocean acidification
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,962
22,571
0.403
* Total Citation Counts Rankings
Ranking Based On Selection :24
coastal processes
coral reefs
coral calcification
ocean acidification
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,866
16,742
0.311
* Total Citation Counts Rankings
Ranking Based On Selection :25
instabilities
fluid dynamics
bacterial dynamics
physical oceanography
granular media
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,855
9,813
0.182
* Total Citation Counts Rankings
Rankings
1,744
70
6
Ranking Based On Selection: 1
Paul J Harrison
University of British Columbia
Vancouver, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
131,823
52,882
0.401
Biological Oceanography
nutrients
phytoplankton
* Total Citation Counts Rankings
Rankings
2,881
65
1
Ranking Based On Selection: 2
Jaap Sinninghe Damste
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
101,730
35,970
0.354
organic geochemistry
microbiology
* Total Citation Counts Rankings
Rankings
2,932
229
1
Ranking Based On Selection: 3
Richard Thompson
University of Plymouth
Plymouth, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,857
75,261
0.746
Microplastics
ecology of coastal defences
marine ecology
marine pollution
* Total Citation Counts Rankings
Rankings
3,784
211
1
Ranking Based On Selection: 4
Letizia Lusito
Università del Salento
Lecce, Italy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,247
22,078
0.250
Hydrological Modelling
Climate analysis
Statistics
Programming
Oceanography
* Total Citation Counts Rankings
Rankings
4,477
2,152
1
Ranking Based On Selection: 5
Richard Feely
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
79,841
32,450
0.406
Chemical Oceanographer Carbon Cycle Ocean Acidiification
* Total Citation Counts Rankings
Rankings
4,618
2,218
12
Ranking Based On Selection: 6
Benjamin S Halpern
University of California Santa Barbara
Santa Barbara, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78,419
39,951
0.509
Marine ecology
conservation biology
* Total Citation Counts Rankings
Rankings
4,760
2,281
5
Ranking Based On Selection: 7
Frank Millero
University of Miami
Coral Gables, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
77,215
20,143
0.261
Physical Chemistry of Natural Waters
Chemical Oceanography
Marine Chemistry
* Total Citation Counts Rankings
Rankings
4,804
2,301
52
Ranking Based On Selection: 8
Veerabhadran Ramanathan
University of California San Diego
San Diego, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
76,882
29,439
0.383
Environment
Climate Change
Ecology
* Total Citation Counts Rankings
Rankings
5,046
2,414
7
Ranking Based On Selection: 9
David Karl
University of Hawaii System
Honolulu, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
74,720
24,563
0.329
microbiology
oceanography
earth sciences
biogeochemistry
* Total Citation Counts Rankings
Rankings
5,431
2,586
59
Ranking Based On Selection: 10
Shang Ping Xie
University of California San Diego
San Diego, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
71,452
37,718
0.528
Climate change
climate variability
climate modeling
ocean-atmospheric dynamics
* Total Citation Counts Rankings
Rankings
5,870
30
5
Ranking Based On Selection: 11
Bo Barker Jørgensen
Aarhus University
Aarhus, Denmark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,072
18,993
0.279
Marine biogeochemistry
* Total Citation Counts Rankings
Rankings
5,964
503
2
Ranking Based On Selection: 12
PJ Reimer
Queen's University Belfast
Belfast, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
67,451
23,577
0.350
Radiocarbon dating and calibration
marine and freshwater reservoir corrections
carbon cycling
* Total Citation Counts Rankings
Rankings
6,559
180
1
Ranking Based On Selection: 13
Yang Liu
Dalian Maritime University
Dalian, China
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
63,452
34,781
0.548
* Total Citation Counts Rankings
Rankings
6,762
3,221
1
Ranking Based On Selection: 14
Jeremy BC Jackson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,334
17,776
0.285
marine ecology
paleobiology
and conservation
* Total Citation Counts Rankings
Rankings
6,993
45
18
Ranking Based On Selection: 15
Katherine Richardson
University of Copenhagen
Copenhagen, Denmark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,060
35,856
0.587
plankton ecosystems
carbon cycling in the ocean
Earth System science
* Total Citation Counts Rankings
Rankings
6,998
606
8
Ranking Based On Selection: 16
Robert J Nicholls
University of East Anglia
Norwich, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
61,050
29,296
0.480
Coastal Systems
Climate Change
Impacts
Adaptation
Integrated Assessment
* Total Citation Counts Rankings
Rankings
7,065
617
4
Ranking Based On Selection: 17
Valerie J Smith
University of Saint Andrews
St Andrews, United Kingdom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
60,703
32,113
0.529
comparative immunology
fish immunology
marine microbiology
marine biotechnology
SOI-USTAN
* Total Citation Counts Rankings
Rankings
7,246
3,456
10
Ranking Based On Selection: 18
Edward Francis Delong
University of Hawaii System
Honolulu, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
59,731
16,531
0.277
microbiology
marine microbiology
microbial genomics
metagenomics
microbial ecology
* Total Citation Counts Rankings
Rankings
7,505
202
1
Ranking Based On Selection: 19
Guifen Wang (王桂芬）
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,375
24,958
0.428
* Total Citation Counts Rankings
Rankings
7,534
3,599
37
Ranking Based On Selection: 20
Jed A Fuhrman
University of Southern California
Los Angeles, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,232
23,117
0.397
Biological oceanography
Marine microbiology
Microbial ecology
* Total Citation Counts Rankings
Rankings
7,873
3,767
1
Ranking Based On Selection: 21
Robert Steneck
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,679
19,117
0.337
Marine Ecology
Evolutionary Biology
Conservation Biology
* Total Citation Counts Rankings
Rankings
7,974
310
1
Ranking Based On Selection: 22
NL Bindoff
University of Tasmania
Hobart, Australia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
56,225
24,505
0.436
Oceanography
Physical Oceanography
Climate Change
* Total Citation Counts Rankings
Rankings
8,043
3,861
3
Ranking Based On Selection: 23
Ken Caldeira
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
55,962
22,571
0.403
climate
biogeochemical cycles
energy / environment
ocean acidification
* Total Citation Counts Rankings
Rankings
8,588
335
16
Ranking Based On Selection: 24
Malcolm Mcculloch
University of Western Australia
Crawley, Australia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,866
16,742
0.311
coastal processes
coral reefs
coral calcification
ocean acidification
climate change
* Total Citation Counts Rankings
Rankings
8,592
4,125
35
Ranking Based On Selection: 25
Harry Swinney
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
53,855
9,813
0.182
instabilities
fluid dynamics
bacterial dynamics
physical oceanography
granular media