Total 2,395,742 scientists, country 221, and institutions 24,443 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 1
Plant diversity and evolution
palaeovegetation science
conservation science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
384
243
0.633
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 2
Conservation biology
megaherbivore ecology
predator prey interactions
ecological history
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
222
133
0.599
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 3
marine top predators - behavioural ecology - population ecology - conservation biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
106
70
0.660
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 4
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
64
0.790
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 5
nonwoven
textiles
fibre reinforced compoistes
technical textiles
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
75
46
0.613
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 6
Analytical Chemistry/Environmental modelling
Ecotoxicology
Persistent organic pollutants
phytoremediation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
40
40
1.000
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 7
Mantle Geochemistry
Cosmochemistry
Geology of southern Africa and western North America
Natural philosophy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
35
0.714
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 8
Greater Cape Evoscapes: phylogeography
molecular ecology
distribution modelling
subtropical thicket ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
40
35
0.875
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 9
Ecotoxicology
Cyanotoxinology and Cyanotoxicology
Fresh water quality
Phytoremediation
Bio-fertilizers
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
46
34
0.739
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 10
Manufacturing
Hydrogen
Renewable Energy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
32
0.485
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* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 11
Development Economics
Experimental Economics
Behavioural Economics
Applied Microeconomics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
37
32
0.865
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 12
IT
CS
IS
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
31
0.544
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 13
Vegetation ecology
Fire ecology
Invasive plant biology
Conservation management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
30
0.714
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 14
electron microscopy
swift heavy ions
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
30
0.857
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 15
Fatigue and solid state welding
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
29
0.690
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 16
Construction Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
28
0.651
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 17
Electron microscopy
SHI irradiation effects in solids
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
28
0.737
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 18
microbialites
macrozoobenthos
geobiology
evolutionary ecology
bioturbation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
27
0.771
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 19
Literary & Cultural Studies
feminisms
postcolonial theory
slave memory
Female Fear Factory
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
26
0.667
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 20
Palaeoecology
Palynology
Palaeoclimatology
Palaeoenvironments
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
25
0.962
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 21
Archaeology
Human Behavioural Ecology
Ethnobotany
Marine Biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
25
1.000
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 22
Semiconductor Physics
Photovoltaics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
45
23
0.511
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 23
Biochemistry
Medical Science
Toxicology
Metabolic Disorders
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
23
0.920
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 24
Inorganic chemistry
materials
catalysis
hydrometallurgy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
22
0.386
* Last 6 Years i10 IndexRankings
Ranking Based On Selection: 25
Blue Carbon
Nature-Based Solutions
Climate Mitigation & Adaptation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
22
0.815
Richard M. Cowling
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
384
243
0.633
Plant diversity and evolution
palaeovegetation science
conservation science
Graham Ih Kerley
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
222
133
0.599
Conservation biology
megaherbivore ecology
predator prey interactions
ecological history
Pierre Pistorius
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
106
70
0.660
marine top predators - behavioural ecology - population ecology - conservation biology
Maryna Van De Venter
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
81
64
0.790
Rajesh Anandjiwala
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
75
46
0.613
nonwoven
textiles
fibre reinforced compoistes
technical textiles
Chijioke Olisah
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
40
40
1.000
Analytical Chemistry/Environmental modelling
Ecotoxicology
Persistent organic pollutants
phytoremediation
David Bell
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
35
0.714
Mantle Geochemistry
Cosmochemistry
Geology of southern Africa and western North America
Natural philosophy
Alastair Potts
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
40
35
0.875
Greater Cape Evoscapes: phylogeography
molecular ecology
distribution modelling
subtropical thicket ecology
Tim Downing
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
46
34
0.739
Ecotoxicology
Cyanotoxinology and Cyanotoxicology
Fresh water quality
Phytoremediation
Bio-fertilizers
K. Abou-El-Hossein
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
32
0.485
Manufacturing
Hydrogen
Renewable Energy
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Syden Mishi
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
37
32
0.865
Development Economics
Experimental Economics
Behavioural Economics
Applied Microeconomics
Andre Calitz
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
31
0.544
Tineke Kraaij
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
30
0.714
Vegetation ecology
Fire ecology
Invasive plant biology
Conservation management
Arno Janse Van Vuuren
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
30
0.857
DG Hattingh
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
29
0.690
Winston Shakantu
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
28
0.651
Jacques O'connell
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
28
0.737
Electron microscopy
SHI irradiation effects in solids
Gavin Rishworth
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
35
27
0.771
microbialites
macrozoobenthos
geobiology
evolutionary ecology
bioturbation
Pumla Dineo Gqola
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
26
0.667
Literary & Cultural Studies
feminisms
postcolonial theory
slave memory
Female Fear Factory
Lynne J. Quick
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
25
0.962
Palaeoecology
Palynology
Palaeoclimatology
Palaeoenvironments
Jan De Vynck
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
25
1.000
Archaeology
Human Behavioural Ecology
Ethnobotany
Marine Biology
EE Van Dyk
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
45
23
0.511
Savania Nagiah
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
23
0.920
Biochemistry
Medical Science
Toxicology
Metabolic Disorders
Zenixole Tshentu
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
57
22
0.386
Inorganic chemistry
materials
catalysis
hydrometallurgy
Jacqueline L Raw
Nelson Mandela University
Port Elizabeth, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
22
0.815
Blue Carbon
Nature-Based Solutions
Climate Mitigation & Adaptation