Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 1.450 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list 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: 26
Fungi: Genetics
Evolutionary Genomics
Systematics
Population
Mating sytems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,107
5,459
0.540
* Total Citation Counts Rankings
Ranking Based On Selection: 27
Marine Mammal Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,014
3,063
0.306
* Total Citation Counts Rankings
Ranking Based On Selection: 28
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,511
4,176
0.439
* Total Citation Counts Rankings
Ranking Based On Selection: 29
Pharmacology
toxicology
oral care
tuberculosis
cancer and cosmeceuticals
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,468
4,783
0.505
* Total Citation Counts Rankings
Ranking Based On Selection: 30
Convective Nanofluids
Computational Heat Transfer
Multiphase
Energy Optimization
Solar-Thermal
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,453
8,496
0.899
* Total Citation Counts Rankings
Ranking Based On Selection: 31
Conservation Ecology
African elephants
Forest restoration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,343
2,553
0.273
* Total Citation Counts Rankings
Ranking Based On Selection: 32
Social Insects
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,291
4,678
0.503
* Total Citation Counts Rankings
Ranking Based On Selection: 33
Cancer Genetics and Human Genetics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,942
4,267
0.477
* Total Citation Counts Rankings
Ranking Based On Selection: 34
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,911
4,008
0.450
* Total Citation Counts Rankings
Ranking Based On Selection: 35
microbial genetics
microbial evolution
microbial systematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,827
4,139
0.469
* Total Citation Counts Rankings
Ranking Based On Selection: 36
Evolutionary Physiology
Ornithology
Stable Isotopes
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,490
4,717
0.556
* Total Citation Counts Rankings
Ranking Based On Selection: 37
Cybersecurity and AI/Data Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,368
2,099
0.251
* Total Citation Counts Rankings
Ranking Based On Selection: 38
Sustainability
Wellbeing
Governance
Political Economy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,255
5,244
0.635
* Total Citation Counts Rankings
Ranking Based On Selection: 39
climate
ecosystems
sustainable agriculture
Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,255
5,014
0.607
* Total Citation Counts Rankings
Ranking Based On Selection: 40
gender and diversity in organizations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,235
3,740
0.454
* Total Citation Counts Rankings
Ranking Based On Selection: 41
Youth resilience
Social Ecology of Resilience Theory
Culture & resilience
African youths' resilience processes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,192
5,081
0.620
* Total Citation Counts Rankings
Ranking Based On Selection: 42
Nano-Science
Materials Science
Energy Storage
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,182
5,294
0.647
* Total Citation Counts Rankings
Ranking Based On Selection: 43
Taxonomy
Systematics
Penicillium
Aspergillus
Talaromyces
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,159
5,877
0.720
* Total Citation Counts Rankings
Ranking Based On Selection: 44
forest molecular genetics
genomics
genetics
cellulose
xylan
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,150
3,088
0.379
* Total Citation Counts Rankings
Ranking Based On Selection: 45
Wildlife Diseases
Wildlife Conservation
One Health
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,845
3,147
0.401
* Total Citation Counts Rankings
Ranking Based On Selection: 46
Biogeography
Ecology
Ethnobotany
Plant Taxonomy
Plant Anatomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,789
2,134
0.274
* Total Citation Counts Rankings
Ranking Based On Selection: 47
Bacterial zoonoses
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,539
2,765
0.367
* Total Citation Counts Rankings
Ranking Based On Selection: 48
biodiversity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,363
1,759
0.239
* Total Citation Counts Rankings
Ranking Based On Selection: 49
Evolutionary biology
phylogtenetics
mammalogy
ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,340
1,934
0.263
* Total Citation Counts Rankings
Ranking Based On Selection: 50
Energy economics and policy
environmental economics
applied economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,211
5,209
0.722
* Total Citation Counts Rankings
Rankings
99,530
351
26
Ranking Based On Selection: 26
Tuan A. Duong
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,107
5,459
0.540
Fungi: Genetics
Evolutionary Genomics
Systematics
Population
Mating sytems
* Total Citation Counts Rankings
Rankings
100,593
356
27
Ranking Based On Selection: 27
Marthan Bester
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,014
3,063
0.306
* Total Citation Counts Rankings
Rankings
106,696
382
28
Ranking Based On Selection: 28
Louis H Nel
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,511
4,176
0.439
* Total Citation Counts Rankings
Rankings
107,249
383
29
Ranking Based On Selection: 29
Namrita Lall
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,468
4,783
0.505
Pharmacology
toxicology
oral care
tuberculosis
cancer and cosmeceuticals
* Total Citation Counts Rankings
Rankings
107,445
386
30
Ranking Based On Selection: 30
Mohsen Sharifpur
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,453
8,496
0.899
Convective Nanofluids
Computational Heat Transfer
Multiphase
Energy Optimization
Solar-Thermal
* Total Citation Counts Rankings
Rankings
108,897
394
31
Ranking Based On Selection: 31
Rudi Van Aarde
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,343
2,553
0.273
Conservation Ecology
African elephants
Forest restoration
* Total Citation Counts Rankings
Rankings
109,544
397
32
Ranking Based On Selection: 32
Christian Pirk
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,291
4,678
0.503
* Total Citation Counts Rankings
Rankings
114,440
423
33
Ranking Based On Selection: 33
Elizabeth (Lizette) J Van Rensburg
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,942
4,267
0.477
Cancer Genetics and Human Genetics
* Total Citation Counts Rankings
Rankings
114,915
427
34
Ranking Based On Selection: 34
Kwaku Gyebi Duodu
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,911
4,008
0.450
* Total Citation Counts Rankings
Rankings
116,116
435
35
Ranking Based On Selection: 35
Emma Steenkamp
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,827
4,139
0.469
microbial genetics
microbial evolution
microbial systematics
* Total Citation Counts Rankings
Rankings
121,360
452
36
Ranking Based On Selection: 36
Andrew Mckechnie
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,490
4,717
0.556
Evolutionary Physiology
Ornithology
Stable Isotopes
Climate Change
* Total Citation Counts Rankings
Rankings
123,287
460
37
Ranking Based On Selection: 37
Jan Eloff
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,368
2,099
0.251
Cybersecurity and AI/Data Science
* Total Citation Counts Rankings
Rankings
125,107
467
38
Ranking Based On Selection: 38
Lorenzo Fioramonti
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,255
5,244
0.635
Sustainability
Wellbeing
Governance
Political Economy
* Total Citation Counts Rankings
Rankings
125,108
468
39
Ranking Based On Selection: 39
Emma Archer
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,255
5,014
0.607
climate
ecosystems
sustainable agriculture
Africa
* Total Citation Counts Rankings
Rankings
125,435
470
40
Ranking Based On Selection: 40
Jenny M. Hoobler
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,235
3,740
0.454
* Total Citation Counts Rankings
Rankings
126,166
476
41
Ranking Based On Selection: 41
Linda C. Theron
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,192
5,081
0.620
Youth resilience
Social Ecology of Resilience Theory
Culture & resilience
African youths' resilience processes
* Total Citation Counts Rankings
Rankings
126,340
477
42
Ranking Based On Selection: 42
Ncholu Manyala
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,182
5,294
0.647
Nano-Science
Materials Science
Energy Storage
* Total Citation Counts Rankings
Rankings
126,696
479
43
Ranking Based On Selection: 43
Cobus Visagie
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,159
5,877
0.720
Taxonomy
Systematics
Penicillium
Aspergillus
Talaromyces
* Total Citation Counts Rankings
Rankings
126,857
480
44
Ranking Based On Selection: 44
Alexander Myburg
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,150
3,088
0.379
forest molecular genetics
genomics
genetics
cellulose
xylan
* Total Citation Counts Rankings
Rankings
132,335
518
45
Ranking Based On Selection: 45
Armanda Ds Bastos
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,845
3,147
0.401
Wildlife Diseases
Wildlife Conservation
One Health
* Total Citation Counts Rankings
Rankings
133,426
525
46
Ranking Based On Selection: 46
Abraham E. Van Wyk
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,789
2,134
0.274
Biogeography
Ecology
Ethnobotany
Plant Taxonomy
Plant Anatomy
* Total Citation Counts Rankings
Rankings
138,217
548
47
Ranking Based On Selection: 47
Anita Michel
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,539
2,765
0.367
* Total Citation Counts Rankings
Rankings
141,775
561
48
Ranking Based On Selection: 48
Nigel Barker
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,363
1,759
0.239
* Total Citation Counts Rankings
Rankings
142,258
565
49
Ranking Based On Selection: 49
Christian Chimimba
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,340
1,934
0.263
Evolutionary biology
phylogtenetics
mammalogy
ecology
* Total Citation Counts Rankings
Rankings
144,929
576
50
Ranking Based On Selection: 50
Roula Inglesi-Lotz
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,211
5,209
0.722
Energy economics and policy
environmental economics
applied economics