Citation Rankings
Highly Cited Researchers
Natural Sciences / Biological Science Highly Cited Researchers 27 Scientists Citation Rankings (Sort by last 6 years Citation Index) - 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.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Metagenomics
Plant-Microbe Interaction
Bioenergy
Bioremediation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,216
5,967
0.647
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* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Aquatic Ecology
Global Change Biology
Food Webs
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,340
3,497
0.806
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
human ecology
coastal management
climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,237
3,001
0.364
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Zoology
Forensic Biology
Biodiversity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,670
2,537
0.380
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,648
2,217
0.608
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Structural Bioinformatics
Drug Design
Drug Resistance
Drug Metabolism
Allostery
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,030
2,116
0.698
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Zoology
Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,345
1,503
0.641
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
ecology
ecotoxicology
transdisciplinarity
resilience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,611
1,333
0.369
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Botany
Pollination
Orchidaceae
Ecology
Evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,903
1,050
0.362
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* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
Ecology
rangeland
savanna
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,240
1,038
0.463
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Biological control of weeds
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,498
990
0.661
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,268
990
0.781
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,688
710
0.421
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Freshwater invertebrates
Trichoptera
Diptera (Simuliidae)
Ephemeroptera
Megaloptera
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,270
612
0.270
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
plant cell biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,505
524
0.209
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Thermal Biology
Marine Ecology
Ecological Niche Modelling
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
546
511
0.936
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
Aquatic Ecology
Freshwater Ecology
Functional Ecology
Biomonitoring
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
454
445
0.980
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Biological control
invasive grasses
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
374
334
0.893
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Biological control
Plant-insect interactions
Species distribution modelling
R
Biostatistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
298
279
0.936
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
trophic ecology
community ecology
biological control
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
342
270
0.789
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Freshwater ecology
Plant-animal interactions
Biological invasions
Restoration ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
252
209
0.829
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
zoology
ornithology
ecology
and climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
204
170
0.833
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Ecosystem services
human-nature interactions
urban ecology
land use/cover
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
99
98
0.990
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Marine biology
Marine ecology
Biological Invasions
Parasites
Rocky shores
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36
36
1.000
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Marine Ecology
Ecophysiology
Biogeography
Coastal Ecology
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15
13
0.867
* Last 6 Years Citation Counts Rankings
Rankings
69,359
286
4
Ranking Based On Selection: 1
Ashwani Kumar
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,216
5,967
0.647
Metagenomics
Plant-Microbe Interaction
Bioenergy
Bioremediation
* Last 6 Years Citation Counts Rankings
Rankings
132,234
577
9
Ranking Based On Selection: 2
Ryan John Wasserman
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,340
3,497
0.806
Aquatic Ecology
Global Change Biology
Food Webs
* Last 6 Years Citation Counts Rankings
Rankings
157,539
686
13
Ranking Based On Selection: 3
Shankar Aswani
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,237
3,001
0.364
human ecology
coastal management
climate change
* Last 6 Years Citation Counts Rankings
Rankings
170,602
746
14
Ranking Based On Selection: 4
Martin H. Villet
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,670
2,537
0.380
Zoology
Forensic Biology
Biodiversity
* Last 6 Years Citation Counts Rankings
Rankings
224,339
990
19
Ranking Based On Selection: 5
Julie Coetzee
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,648
2,217
0.608
* Last 6 Years Citation Counts Rankings
Rankings
237,434
1,051
22
Ranking Based On Selection: 6
Ozlem Tastan Bishop
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,030
2,116
0.698
Structural Bioinformatics
Drug Design
Drug Resistance
Drug Metabolism
Allostery
* Last 6 Years Citation Counts Rankings
Rankings
324,090
1,493
37
Ranking Based On Selection: 7
DM Parker
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,345
1,503
0.641
* Last 6 Years Citation Counts Rankings
Rankings
358,916
1,688
41
Ranking Based On Selection: 8
Carolyn Gay Palmer
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,611
1,333
0.369
ecology
ecotoxicology
transdisciplinarity
resilience
* Last 6 Years Citation Counts Rankings
Rankings
441,014
2,118
53
Ranking Based On Selection: 9
Craig I. Peter
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,903
1,050
0.362
Botany
Pollination
Orchidaceae
Ecology
Evolution
* Last 6 Years Citation Counts Rankings
Rankings
442,789
2,129
54
Ranking Based On Selection: 10
Susanne Vetter
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,240
1,038
0.463
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Through advanced, institution-specific analytics and benchmarking, gain data-driven strategic insights into your academic performance, global standing, and competitive strengths. Compare your institution with 20 similarly ranked institutions at city, country, regional, and global levels, as well as with those in similar standings across 13 subjects, to uncover your institution’s strengths. More Info
* Last 6 Years Citation Counts Rankings
Rankings
454,064
2,183
55
Ranking Based On Selection: 11
ID Paterson
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,498
990
0.661
* Last 6 Years Citation Counts Rankings
Rankings
455,479
2,195
56
Ranking Based On Selection: 12
Ruwanza Sheunesu
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,268
990
0.781
* Last 6 Years Citation Counts Rankings
Rankings
577,499
2,907
73
Ranking Based On Selection: 13
Nicole Richoux
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,688
710
0.421
* Last 6 Years Citation Counts Rankings
Rankings
631,778
3,281
78
Ranking Based On Selection: 14
Ferdinand De Moor
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,270
612
0.270
Freshwater invertebrates
Trichoptera
Diptera (Simuliidae)
Ephemeroptera
Megaloptera
* Last 6 Years Citation Counts Rankings
Rankings
685,724
3,643
86
Ranking Based On Selection: 15
Cej Botha
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,505
524
0.209
* Last 6 Years Citation Counts Rankings
Rankings
712,391
3,812
93
Ranking Based On Selection: 16
Jonathan Monsinjon
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
546
511
0.936
Thermal Biology
Marine Ecology
Ecological Niche Modelling
Climate Change
* Last 6 Years Citation Counts Rankings
Rankings
773,672
4,212
100
Ranking Based On Selection: 17
Frank C. Akamagwuna
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
454
445
0.980
Aquatic Ecology
Freshwater Ecology
Functional Ecology
Biomonitoring
* Last 6 Years Citation Counts Rankings
Rankings
892,569
5,051
110
Ranking Based On Selection: 18
Kim Canavan
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
374
334
0.893
Biological control
invasive grasses
* Last 6 Years Citation Counts Rankings
Rankings
982,426
5,762
124
Ranking Based On Selection: 19
Guy F. Sutton
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
298
279
0.936
Biological control
Plant-insect interactions
Species distribution modelling
R
Biostatistics
* Last 6 Years Citation Counts Rankings
Rankings
987,440
5,803
125
Ranking Based On Selection: 20
Lenin Chari
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
342
270
0.789
trophic ecology
community ecology
biological control
* Last 6 Years Citation Counts Rankings
Rankings
1,103,925
6,743
151
Ranking Based On Selection: 21
Antonella Petruzzella
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
252
209
0.829
Freshwater ecology
Plant-animal interactions
Biological invasions
Restoration ecology
* Last 6 Years Citation Counts Rankings
Rankings
1,201,676
7,479
160
Ranking Based On Selection: 22
Krista N Oswald
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
204
170
0.833
zoology
ornithology
ecology
and climate change
* Last 6 Years Citation Counts Rankings
Rankings
1,454,048
9,484
182
Ranking Based On Selection: 23
Opeyemi Adeyemi
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
99
98
0.990
Ecosystem services
human-nature interactions
urban ecology
land use/cover
* Last 6 Years Citation Counts Rankings
Rankings
1,830,170
12,458
199
Ranking Based On Selection: 24
Alexia M Dievart
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
36
36
1.000
Marine biology
Marine ecology
Biological Invasions
Parasites
Rocky shores
* Last 6 Years Citation Counts Rankings
Rankings
2,091,031
15,005
236
Ranking Based On Selection: 25
Sebbi L Kankondi
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15
13
0.867
Marine Ecology
Ecophysiology
Biogeography
Coastal Ecology
Climate Change
