Citation Rankings
Highly Cited Researchers
Highly Cited Researchers Citation Rankings (Sort by last 6 years Citation Index) 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.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Gravitational Waves
Black Holes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,658
15,406
0.651
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Photophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,581
13,636
0.383
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,833
11,807
0.495
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Metagenomics
Plant-Microbe Interaction
Bioenergy
Bioremediation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,683
5,983
0.689
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Marine ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,095
5,338
0.354
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,373
5,017
0.484
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Radio Astronomy
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,121
4,472
0.873
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
Biological Control
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,838
4,033
0.515
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,240
3,886
0.346
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
Smart Materials
Drug Delivery
Natural Products
Organic Synthesis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,142
3,719
0.606
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Aquatic Ecology
Global Change Biology
Food Webs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,154
3,672
0.884
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
fisheries
ocean governance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,132
3,442
0.483
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
human ecology
coastal management
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,158
3,427
0.420
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Cellulases
Xylanases
Fucoidanases
Seaweeds
Bioproducts
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,156
3,371
0.548
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
Zoology
Forensic Biology
Biodiversity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,290
3,180
0.436
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Ecology
plankton food webs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,856
2,839
0.361
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
Environmental Education
Social Learning
Transformative Learning
Critical theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,622
2,770
0.599
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Conservation
protected areas
social-ecological systems
ecosystem services
resilience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,877
2,546
0.885
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Bioinformatics
Biophysics
Structural Biology
Computational Chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,932
2,440
0.832
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,465
2,269
0.655
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Radio Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,833
2,233
0.583
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
Structural Bioinformatics
Drug Design
Drug Resistance
Drug Metabolism
Allostery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,906
2,178
0.749
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Feminist Psychology
Critical Health Psychology
critical studies in sexualities and reproduction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,023
2,130
0.529
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Fish
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,005
2,090
0.696
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Conservation
Plant-herbivore interaction
wild herbivore nutrition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,672
2,068
0.365
* Last 6 Years Citation Counts Rankings
Rankings
18,940
70
1
Ranking Based On Selection: 1
Denis Pollney
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,658
15,406
0.651
Gravitational Waves
Black Holes
* Last 6 Years Citation Counts Rankings
Rankings
22,914
86
2
Ranking Based On Selection: 2
Tebello Nyokong
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,581
13,636
0.383
* Last 6 Years Citation Counts Rankings
Rankings
28,405
108
3
Ranking Based On Selection: 3
Charlie Shackleton
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,833
11,807
0.495
* Last 6 Years Citation Counts Rankings
Rankings
74,839
303
4
Ranking Based On Selection: 4
Ashwani Kumar
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,683
5,983
0.689
Metagenomics
Plant-Microbe Interaction
Bioenergy
Bioremediation
* Last 6 Years Citation Counts Rankings
Rankings
86,655
353
5
Ranking Based On Selection: 5
Christopher Mcquaid
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,095
5,338
0.354
* Last 6 Years Citation Counts Rankings
Rankings
93,743
382
6
Ranking Based On Selection: 6
John Mack
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,373
5,017
0.484
* Last 6 Years Citation Counts Rankings
Rankings
108,195
456
7
Ranking Based On Selection: 7
Sphesihle Makhathini
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,121
4,472
0.873
Radio Astronomy
Astrophysics
* Last 6 Years Citation Counts Rankings
Rankings
122,452
527
8
Ranking Based On Selection: 8
Martin P Hill
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,838
4,033
0.515
* Last 6 Years Citation Counts Rankings
Rankings
128,011
548
9
Ranking Based On Selection: 9
Denis Hughes
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,240
3,886
0.346
* Last 6 Years Citation Counts Rankings
Rankings
134,817
578
10
Ranking Based On Selection: 10
Rui Krause
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,142
3,719
0.606
Smart Materials
Drug Delivery
Natural Products
Organic Synthesis
* Last 6 Years Citation Counts Rankings
Rankings
136,857
586
11
Ranking Based On Selection: 11
Ryan John Wasserman
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,154
3,672
0.884
Aquatic Ecology
Global Change Biology
Food Webs
* Last 6 Years Citation Counts Rankings
Rankings
147,700
639
12
Ranking Based On Selection: 12
Warwick Sauer
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,132
3,442
0.483
* Last 6 Years Citation Counts Rankings
Rankings
148,388
641
13
Ranking Based On Selection: 13
Shankar Aswani
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,158
3,427
0.420
human ecology
coastal management
climate change
* Last 6 Years Citation Counts Rankings
Rankings
151,210
654
14
Ranking Based On Selection: 14
Brett Pletschke
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,156
3,371
0.548
Cellulases
Xylanases
Fucoidanases
Seaweeds
Bioproducts
* Last 6 Years Citation Counts Rankings
Rankings
161,582
703
15
Ranking Based On Selection: 15
Martin H. Villet
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,290
3,180
0.436
Zoology
Forensic Biology
Biodiversity
* Last 6 Years Citation Counts Rankings
Rankings
183,364
794
16
Ranking Based On Selection: 16
William Froneman
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,856
2,839
0.361
Ecology
plankton food webs
* Last 6 Years Citation Counts Rankings
Rankings
188,287
811
17
Ranking Based On Selection: 17
Heila Lotz-Sisitka
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,622
2,770
0.599
Environmental Education
Social Learning
Transformative Learning
Critical theory
* Last 6 Years Citation Counts Rankings
Rankings
206,126
907
18
Ranking Based On Selection: 18
Alta De Vos
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,877
2,546
0.885
Conservation
protected areas
social-ecological systems
ecosystem services
resilience
* Last 6 Years Citation Counts Rankings
Rankings
215,596
959
19
Ranking Based On Selection: 19
Faez Iqbal Khan
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,932
2,440
0.832
Bioinformatics
Biophysics
Structural Biology
Computational Chemistry
* Last 6 Years Citation Counts Rankings
Rankings
232,219
1,023
20
Ranking Based On Selection: 20
Julie Coetzee
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,465
2,269
0.655
* Last 6 Years Citation Counts Rankings
Rankings
236,040
1,045
21
Ranking Based On Selection: 21
Justin Jonas
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,833
2,233
0.583
* Last 6 Years Citation Counts Rankings
Rankings
242,098
1,073
22
Ranking Based On Selection: 22
Ozlem Tastan Bishop
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,906
2,178
0.749
Structural Bioinformatics
Drug Design
Drug Resistance
Drug Metabolism
Allostery
* Last 6 Years Citation Counts Rankings
Rankings
247,611
1,094
23
Ranking Based On Selection: 23
Catriona Macleod
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,023
2,130
0.529
Feminist Psychology
Critical Health Psychology
critical studies in sexualities and reproduction
* Last 6 Years Citation Counts Rankings
Rankings
252,453
1,122
24
Ranking Based On Selection: 24
Warren Potts
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,005
2,090
0.696
* Last 6 Years Citation Counts Rankings
Rankings
255,137
1,133
25
Ranking Based On Selection: 25
CC Grant
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,672
2,068
0.365
Conservation
Plant-herbivore interaction
wild herbivore nutrition