Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 1.283 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
Microbial Ecology
Soil Metagenomics
Plant-Microbe Interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,311
23,690
0.867
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* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
Pulsars
gamma-ray astronomy
globular clusters
cosmic rays
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,597
13,150
0.316
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Environmental
Health
& Development Economics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,058
10,560
0.658
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,122
9,831
0.391
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Positive Organizations
Capabilities
Engagement
Flourishing
Well-being
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,717
8,500
0.431
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
Astrophysics
Astronomy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,640
8,634
0.552
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Thermodynamics of solution
DESs
Ionic Liquids
Corrosion
Separation Technology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,869
8,459
0.713
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
membranes
hydrogen
fuel cells
electrolysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,594
7,803
0.737
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
Low Noise Amplifiers
Gamma-ray astrophysics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,614
6,997
0.555
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* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
Materials Chemistry
Green Chemistry
Chemical Engineering
Water Treatment
Environmental Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,440
7,061
0.837
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
gamma-ray energy
blazars
active galaxies
AGN
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,235
6,798
0.736
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,021
5,247
0.276
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
Geoecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,185
5,039
0.451
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
Botany
IKS
Plant Science
Ethnopharmacology
Ethnobotany
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,833
4,812
0.704
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
Differential Equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,600
4,616
0.607
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Urban ecology
Vegetation science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,394
4,547
0.615
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
16S rRNA gene
bacterial diversity
insect gut bacteria
microbial community
Metagenomics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,650
4,147
0.389
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Epidemiology of non-communicable disease
cardiovascular health promotion
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,345
4,148
0.776
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
Agricultural Entomology
Environmental Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,558
3,905
0.517
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
Astrophysics
gamma-ray astronomy
pulsar wind nebulae
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,063
3,917
0.774
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
positive psychology
meaning
relational well-being
cultures of positivity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,874
3,811
0.484
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
Ecotoxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,776
3,723
0.479
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Plant-Microbe Interactions
Environmental Microbiology
Molecular Biology
Food Security
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,810
3,617
0.949
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
Environmental Microbiology
Bioremediation
Biopolymer
Plant-soil-microbe interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,832
3,452
0.901
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Aquatic Parasitology
Ecosystem Health
Aquatic Ecology
Marine Parasitology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,762
3,298
0.572
* Last 6 Years Citation Counts Rankings
Rankings
9,105
42
1
Ranking Based On Selection: 1
Olubukola Oluranti Babalola
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,311
23,690
0.867
Microbial Ecology
Soil Metagenomics
Plant-Microbe Interactions
* Last 6 Years Citation Counts Rankings
Rankings
21,676
84
2
Ranking Based On Selection: 2
Christo Venter
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,597
13,150
0.316
Pulsars
gamma-ray astronomy
globular clusters
cosmic rays
* Last 6 Years Citation Counts Rankings
Rankings
30,593
125
3
Ranking Based On Selection: 3
AS Oyekale
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,058
10,560
0.658
Environmental
Health
& Development Economics
* Last 6 Years Citation Counts Rankings
Rankings
33,112
136
4
Ranking Based On Selection: 4
Markus Boettcher
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,122
9,831
0.391
* Last 6 Years Citation Counts Rankings
Rankings
40,373
167
5
Ranking Based On Selection: 5
Sebastiaan Rothmann
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,717
8,500
0.431
Positive Organizations
Capabilities
Engagement
Flourishing
Well-being
* Last 6 Years Citation Counts Rankings
Rankings
40,738
168
6
Ranking Based On Selection: 6
Iurii Sushch
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
15,640
8,634
0.552
Astrophysics
Astronomy
* Last 6 Years Citation Counts Rankings
Rankings
42,127
175
7
Ranking Based On Selection: 7
Indra Bahadur
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,869
8,459
0.713
Thermodynamics of solution
DESs
Ionic Liquids
Corrosion
Separation Technology
* Last 6 Years Citation Counts Rankings
Rankings
47,187
196
8
Ranking Based On Selection: 8
Dmitri Bessarabov
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,594
7,803
0.737
membranes
hydrogen
fuel cells
electrolysis
* Last 6 Years Citation Counts Rankings
Rankings
55,634
237
9
Ranking Based On Selection: 9
Paulus Kruger
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,614
6,997
0.555
Low Noise Amplifiers
Gamma-ray astrophysics
* Last 6 Years Citation Counts Rankings
Rankings
55,690
238
10
Ranking Based On Selection: 10
Damian C. Onwudiwe
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,440
7,061
0.837
Materials Chemistry
Green Chemistry
Chemical Engineering
Water Treatment
Environmental Analysis
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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
57,635
240
11
Ranking Based On Selection: 11
Natalia Zywucka
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,235
6,798
0.736
* Last 6 Years Citation Counts Rankings
Rankings
78,951
320
12
Ranking Based On Selection: 12
Donald Kurtz
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,021
5,247
0.276
* Last 6 Years Citation Counts Rankings
Rankings
84,512
346
13
Ranking Based On Selection: 13
Stefan Siebert
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,185
5,039
0.451
* Last 6 Years Citation Counts Rankings
Rankings
90,961
372
14
Ranking Based On Selection: 14
Adeyemi Oladapo Aremu
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,833
4,812
0.704
Botany
IKS
Plant Science
Ethnopharmacology
Ethnobotany
* Last 6 Years Citation Counts Rankings
Rankings
93,925
388
15
Ranking Based On Selection: 15
Masood Khalique
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,600
4,616
0.607
* Last 6 Years Citation Counts Rankings
Rankings
97,655
403
16
Ranking Based On Selection: 16
Sarel Cilliers
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,394
4,547
0.615
Urban ecology
Vegetation science
* Last 6 Years Citation Counts Rankings
Rankings
107,362
452
17
Ranking Based On Selection: 17
Arvind Kumar Gupta
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,650
4,147
0.389
16S rRNA gene
bacterial diversity
insect gut bacteria
microbial community
Metagenomics
* Last 6 Years Citation Counts Rankings
Rankings
108,891
461
18
Ranking Based On Selection: 18
Iolanthé Marike Kruger
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,345
4,148
0.776
Epidemiology of non-communicable disease
cardiovascular health promotion
* Last 6 Years Citation Counts Rankings
Rankings
116,963
499
19
Ranking Based On Selection: 19
Van Den Berg, J. Johnnie
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,558
3,905
0.517
Agricultural Entomology
Environmental Sciences
* Last 6 Years Citation Counts Rankings
Rankings
118,053
504
20
Ranking Based On Selection: 20
Carlo Van Rensburg
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,063
3,917
0.774
Astrophysics
gamma-ray astronomy
pulsar wind nebulae
* Last 6 Years Citation Counts Rankings
Rankings
121,115
513
21
Ranking Based On Selection: 21
Marie Wissing
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,874
3,811
0.484
positive psychology
meaning
relational well-being
cultures of positivity
* Last 6 Years Citation Counts Rankings
Rankings
121,935
518
22
Ranking Based On Selection: 22
H Bouwman
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,776
3,723
0.479
* Last 6 Years Citation Counts Rankings
Rankings
129,700
565
23
Ranking Based On Selection: 23
Oluwaseyi Samuel Olanrewaju
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,810
3,617
0.949
Plant-Microbe Interactions
Environmental Microbiology
Molecular Biology
Food Security
* Last 6 Years Citation Counts Rankings
Rankings
137,087
592
24
Ranking Based On Selection: 24
Ayansina Segun Ayangbenro
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,832
3,452
0.901
Environmental Microbiology
Bioremediation
Biopolymer
Plant-soil-microbe interactions
* Last 6 Years Citation Counts Rankings
Rankings
143,193
618
25
Ranking Based On Selection: 25
Nico J Smit
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,762
3,298
0.572
Aquatic Parasitology
Ecosystem Health
Aquatic Ecology
Marine Parasitology
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