Citation Rankings
Highly Cited Researchers
University of Maine System Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the 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
Marine Ecology
Evolutionary Biology
Conservation Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,562
19,909
0.346
* Total Citation Counts Rankings
Ranking Based On Selection :2
Glaciology
climate change
atmospheric chemistry
Antarctica
Himalayas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,064
12,102
0.281
* Total Citation Counts Rankings
Ranking Based On Selection :3
Biodiversity
Global Change
Ecology
Macroecology
Ecoinformatics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,755
17,742
0.596
* Total Citation Counts Rankings
Ranking Based On Selection :4
Gender
Masculinities
Crime
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,559
13,981
0.473
* Total Citation Counts Rankings
Ranking Based On Selection :5
spatial reasoning
geographic information science
spatial informatics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,662
2,909
0.101
* Total Citation Counts Rankings
Ranking Based On Selection :6
Earth Sciences
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,581
5,692
0.199
* Total Citation Counts Rankings
Ranking Based On Selection :7
Oceanography
Science education
Marine Science
Ocean Optics
Biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,582
16,185
0.566
* Total Citation Counts Rankings
Ranking Based On Selection :8
social media
political sociology
social network analysis
gender
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,345
11,497
0.420
* Total Citation Counts Rankings
Ranking Based On Selection :9
Forestry
Ecosystem Science
Carbon Cycle
Remote Sensing
Modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,391
13,193
0.617
* Total Citation Counts Rankings
Ranking Based On Selection :10
Smart Multi-functional Meta-Materials - IPMCs-Advanced Soft Robotics - Nano-Bio - Artificial Muscles
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,263
4,166
0.206
* Total Citation Counts Rankings
Ranking Based On Selection :11
Biological oceanography
biological-physical interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,138
3,126
0.155
* Total Citation Counts Rankings
Ranking Based On Selection :12
Medicine
childhood cancer
sarcomas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,018
4,466
0.235
* Total Citation Counts Rankings
Ranking Based On Selection :13
Zoosporic fungi
Batrachochytrium
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,608
5,750
0.309
* Total Citation Counts Rankings
Ranking Based On Selection :14
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,663
3,708
0.210
* Total Citation Counts Rankings
Ranking Based On Selection :15
Molecular machines
Trajectory Thermodynamics
Kinetic Asymmetry
Non-equilibrium pumping equality
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,351
4,330
0.265
* Total Citation Counts Rankings
Ranking Based On Selection :16
Biogeochemistry
Ocean science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,440
3,735
0.242
* Total Citation Counts Rankings
Ranking Based On Selection :17
forest soils
biogeochemistry
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,131
5,543
0.366
* Total Citation Counts Rankings
Ranking Based On Selection :18
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,419
4,876
0.363
* Total Citation Counts Rankings
Ranking Based On Selection :19
Wood-based Composites
Wood Adhesion
Nanocellulose
Wood
Extrusion-based Additive Manufacturing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,350
8,054
0.603
* Total Citation Counts Rankings
Ranking Based On Selection :20
proton transfer in water wires
water in nanotubes
electrolytes and polar fluids
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,685
2,609
0.206
* Total Citation Counts Rankings
Ranking Based On Selection :21
Bioinformatics
Genomics
Host-Pathogen Interactions
Regeneration
Stress Responses
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,527
3,610
0.288
* Total Citation Counts Rankings
Ranking Based On Selection :22
oceanography
numerical modeling
carbon cycle
BGC-Argo
fisheries
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,152
5,667
0.466
* Total Citation Counts Rankings
Ranking Based On Selection :23
oceanography
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,554
4,162
0.394
* Total Citation Counts Rankings
Ranking Based On Selection :24
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,212
2,789
0.273
* Total Citation Counts Rankings
Ranking Based On Selection :25
Geology
mineralogy
petrology
geochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,038
2,888
0.288
* Total Citation Counts Rankings
Rankings
7,988
3,790
1
Ranking Based On Selection: 1
Robert Steneck
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57,562
19,909
0.346
Marine Ecology
Evolutionary Biology
Conservation Biology
* Total Citation Counts Rankings
Rankings
12,743
6,028
2
Ranking Based On Selection: 2
Paul Mayewski
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
43,064
12,102
0.281
Glaciology
climate change
atmospheric chemistry
Antarctica
Himalayas
* Total Citation Counts Rankings
Rankings
22,797
10,502
3
Ranking Based On Selection: 3
Brian Mcgill
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,755
17,742
0.596
Biodiversity
Global Change
Ecology
Macroecology
Ecoinformatics
* Total Citation Counts Rankings
Rankings
23,147
10,669
4
Ranking Based On Selection: 4
James Messerschmidt
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
29,559
13,981
0.473
* Total Citation Counts Rankings
Rankings
24,163
11,092
5
Ranking Based On Selection: 5
Max J Egenhofer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,662
2,909
0.101
spatial reasoning
geographic information science
spatial informatics
* Total Citation Counts Rankings
Rankings
24,288
11,146
7
Ranking Based On Selection: 6
George H Denton
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,581
5,692
0.199
Earth Sciences
Climate Change
* Total Citation Counts Rankings
Rankings
24,286
11,145
6
Ranking Based On Selection: 7
Emmanuel Boss
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,582
16,185
0.566
Oceanography
Science education
Marine Science
Ocean Optics
Biogeochemistry
* Total Citation Counts Rankings
Rankings
25,975
11,900
8
Ranking Based On Selection: 8
James Cook
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,345
11,497
0.420
social media
political sociology
social network analysis
gender
* Total Citation Counts Rankings
Rankings
37,067
16,504
9
Ranking Based On Selection: 9
Daniel J Hayes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,391
13,193
0.617
Forestry
Ecosystem Science
Carbon Cycle
Remote Sensing
Modeling
* Total Citation Counts Rankings
Rankings
40,026
17,699
10
Ranking Based On Selection: 10
Mohsen MO Shahinpoor
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,263
4,166
0.206
Smart Multi-functional Meta-Materials - IPMCs-Advanced Soft Robotics - Nano-Bio - Artificial Muscles
* Total Citation Counts Rankings
Rankings
40,386
17,840
11
Ranking Based On Selection: 11
Peter Jumars
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,138
3,126
0.155
Biological oceanography
biological-physical interactions
* Total Citation Counts Rankings
Rankings
43,559
19,066
12
Ranking Based On Selection: 12
Cheryl M Coffin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,018
4,466
0.235
* Total Citation Counts Rankings
Rankings
44,879
19,567
13
Ranking Based On Selection: 13
Joyce Longcore
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,608
5,750
0.309
Zoosporic fungi
Batrachochytrium
* Total Citation Counts Rankings
Rankings
48,282
20,904
14
Ranking Based On Selection: 14
Malcolm Hunter Jr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,663
3,708
0.210
* Total Citation Counts Rankings
Rankings
53,486
22,938
15
Ranking Based On Selection: 15
Raymond Astumian
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,351
4,330
0.265
Molecular machines
Trajectory Thermodynamics
Kinetic Asymmetry
Non-equilibrium pumping equality
* Total Citation Counts Rankings
Rankings
57,794
24,565
16
Ranking Based On Selection: 16
Lawrence M Mayer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,440
3,735
0.242
Biogeochemistry
Ocean science
* Total Citation Counts Rankings
Rankings
59,325
25,159
17
Ranking Based On Selection: 17
Ivan J Fernandez
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,131
5,543
0.366
forest soils
biogeochemistry
climate change
* Total Citation Counts Rankings
Rankings
69,420
28,885
18
Ranking Based On Selection: 18
Michael T Kinnison
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,419
4,876
0.363
* Total Citation Counts Rankings
Rankings
69,884
29,042
19
Ranking Based On Selection: 19
Douglas Gardner
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,350
8,054
0.603
Wood-based Composites
Wood Adhesion
Nanocellulose
Wood
Extrusion-based Additive Manufacturing
* Total Citation Counts Rankings
Rankings
74,568
30,724
20
Ranking Based On Selection: 20
Jayendran C Rasaiah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,685
2,609
0.206
proton transfer in water wires
water in nanotubes
electrolytes and polar fluids
* Total Citation Counts Rankings
Rankings
75,750
31,167
21
Ranking Based On Selection: 21
Benjamin L King
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,527
3,610
0.288
Bioinformatics
Genomics
Host-Pathogen Interactions
Regeneration
Stress Responses
* Total Citation Counts Rankings
Rankings
78,533
32,160
22
Ranking Based On Selection: 22
Fei Chai
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,152
5,667
0.466
oceanography
numerical modeling
carbon cycle
BGC-Argo
fisheries
* Total Citation Counts Rankings
Rankings
93,099
37,341
23
Ranking Based On Selection: 23
Andrew C Thomas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,554
4,162
0.394
* Total Citation Counts Rankings
Rankings
96,715
38,585
24
Ranking Based On Selection: 24
Mary Jane Perry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,212
2,789
0.273
* Total Citation Counts Rankings
Rankings
98,603
39,233
25
Ranking Based On Selection: 25
Edward Grew
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,038
2,888
0.288
Geology
mineralogy
petrology
geochemistry