Citation Rankings
Highly Cited Researchers
Natural Sciences / Biological Science Highly Cited Researchers 55 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: 1
Medicinal Plants
Ethnobotany
Phytochemistry
Phytomedicine
Ethnopharmacology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,601
9,663
0.393
* Total Citation Counts Rankings
Ranking Based On Selection: 2
mole-rats
Reproduction
physiology...
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,902
7,854
0.416
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Cancer cellular biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,496
7,229
0.413
* Total Citation Counts Rankings
Ranking Based On Selection: 4
pollination
physiology
nectar-feeding birds
honey bees
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,662
5,380
0.394
* Total Citation Counts Rankings
Ranking Based On Selection: 5
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: 6
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: 7
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: 8
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: 9
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: 10
social behaviour
chemical ecology
social insects
honeybee
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,338
1,392
0.220
* Total Citation Counts Rankings
Ranking Based On Selection: 11
biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,249
2,202
0.420
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Large Mammal Ecology
Marine Mammals
Wildlife Management
Field methods
Long-term monitoring
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,183
3,470
0.669
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Dung beetles
biogeography
ecology
taxonomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,466
1,579
0.354
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Behavioral Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,228
1,071
0.253
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Wildlife / Behavioural Endocrinology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,119
2,323
0.564
* Total Citation Counts Rankings
Ranking Based On Selection: 16
life science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,539
1,840
0.520
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Conservation ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,179
1,375
0.433
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Honeybees
pollination
pollen
nectar
bee diseases
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,115
1,631
0.524
* Total Citation Counts Rankings
Ranking Based On Selection: 19
ecology
macroecology
Africa
species distributions
diversity patterns
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,590
1,820
0.703
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Applied cell biology
bio active molecules
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,583
1,469
0.569
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Flies of Economic Significance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,578
1,317
0.511
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Bioinformatics
genomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,330
753
0.323
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Evolutionary ecology
host-parasite interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,089
1,168
0.559
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Behavioural Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,929
1,075
0.557
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Behavioural Ecology
Parasite Ecology
Ecological Immunology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,703
919
0.540
* Total Citation Counts Rankings
Rankings
31,005
96
6
Ranking Based On Selection: 1
Jacobus Eloff
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,601
9,663
0.393
Medicinal Plants
Ethnobotany
Phytochemistry
Phytomedicine
Ethnopharmacology
* Total Citation Counts Rankings
Rankings
44,789
146
10
Ranking Based On Selection: 2
Nigel C Bennett
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,902
7,854
0.416
mole-rats
Reproduction
physiology...
* Total Citation Counts Rankings
Rankings
49,815
159
11
Ranking Based On Selection: 3
Annie Joubert
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,496
7,229
0.413
* Total Citation Counts Rankings
Rankings
69,030
235
18
Ranking Based On Selection: 4
Susan W. Nicolson
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,662
5,380
0.394
pollination
physiology
nectar-feeding birds
honey bees
* Total Citation Counts Rankings
Rankings
108,665
394
31
Ranking Based On Selection: 5
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
121,096
452
36
Ranking Based On Selection: 6
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
132,058
518
45
Ranking Based On Selection: 7
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
133,147
525
46
Ranking Based On Selection: 8
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
141,957
565
49
Ranking Based On Selection: 9
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
165,391
658
56
Ranking Based On Selection: 10
Robin Crewe
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,338
1,392
0.220
social behaviour
chemical ecology
social insects
honeybee
* Total Citation Counts Rankings
Rankings
199,232
826
71
Ranking Based On Selection: 11
Oleg Reva
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,249
2,202
0.420
* Total Citation Counts Rankings
Rankings
201,729
843
74
Ranking Based On Selection: 12
Nico De Bruyn|PJ Nico de Bruyn
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,183
3,470
0.669
Large Mammal Ecology
Marine Mammals
Wildlife Management
Field methods
Long-term monitoring
* Total Citation Counts Rankings
Rankings
232,394
974
90
Ranking Based On Selection: 13
Adrian LV Davis
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,466
1,579
0.354
Dung beetles
biogeography
ecology
taxonomy
* Total Citation Counts Rankings
Rankings
244,415
1,028
93
Ranking Based On Selection: 14
David Gaynor
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,228
1,071
0.253
* Total Citation Counts Rankings
Rankings
250,393
1,068
98
Ranking Based On Selection: 15
Andre Ganswindt
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,119
2,323
0.564
Wildlife / Behavioural Endocrinology
* Total Citation Counts Rankings
Rankings
285,966
1,248
109
Ranking Based On Selection: 16
Elna M Buys
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,539
1,840
0.520
* Total Citation Counts Rankings
Rankings
313,131
1,388
130
Ranking Based On Selection: 17
Mark Keith
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,179
1,375
0.433
* Total Citation Counts Rankings
Rankings
318,541
1,422
137
Ranking Based On Selection: 18
Hannelie Human
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,115
1,631
0.524
Honeybees
pollination
pollen
nectar
bee diseases
* Total Citation Counts Rankings
Rankings
369,566
1,690
167
Ranking Based On Selection: 19
Michelle Greve
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,590
1,820
0.703
ecology
macroecology
Africa
species distributions
diversity patterns
* Total Citation Counts Rankings
Rankings
370,355
1,699
168
Ranking Based On Selection: 20
Megan Bester
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,583
1,469
0.569
Applied cell biology
bio active molecules
* Total Citation Counts Rankings
Rankings
370,959
1,701
169
Ranking Based On Selection: 21
Chris Weldon
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,578
1,317
0.511
* Total Citation Counts Rankings
Rankings
400,706
1,867
188
Ranking Based On Selection: 22
Fourie Joubert
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,330
753
0.323
* Total Citation Counts Rankings
Rankings
434,202
2,060
201
Ranking Based On Selection: 23
Muriel Dietrich
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,089
1,168
0.559
Evolutionary ecology
host-parasite interactions
* Total Citation Counts Rankings
Rankings
459,518
2,183
214
Ranking Based On Selection: 24
Adrian M Shrader
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,929
1,075
0.557
* Total Citation Counts Rankings
Rankings
500,435
2,417
239
Ranking Based On Selection: 25
Heike Lutermann
University of Pretoria
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,703
919
0.540
Behavioural Ecology
Parasite Ecology
Ecological Immunology