Productivity Rankings is an exclusive service provided by AD Scientific Index. This ranking system, derived from the i10 index, highlights the productivity of scientists in publishing impactful scientific articles. Productivity Rankings serves as a tool to identify highly productive scientists across specific areas, disciplines, universities, and countries, and supports the creation of effective incentives and academic policies. The global, regional, and institutional rankings of scientists in this table are calculated based on their total i10 index. Moreover, you can explore special rankings derived from Productivity Rankings, such as Scientists Last 6 Years' i10 Index, Universities Total i10 Index Rankings 2025, Universities Last 6 Years' i10 Index Rankings 2025, Art and Humanities i10 Productivity Rankings, and Social Sciences and Humanities i10 Productivity Rankings.
* Total i10 IndexRankings
Ranking Based On Selection :1
Wastewater treatment technologies
Bioreactors
Membrane technology
Water reuse
Microbial fuel
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
164
142
0.866
* Total i10 IndexRankings
Ranking Based On Selection :2
Climate Change
Loss and Damage
Disaster Risk Reduction
SDGs
Coastal Resilience and Livelihoods
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
112
93
0.830
* Total i10 IndexRankings
Ranking Based On Selection :3
Water Microbiology
Environmental Biotechnology
Biological Wastewater Treatment
Mycotoxins
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
40
38
0.950
* Total i10 IndexRankings
Ranking Based On Selection :4
Environmental Sciences
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
25
0.694
* Total i10 IndexRankings
Ranking Based On Selection :5
Environmental issues related to natural resource management
environmental governance
climate
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
19
1.000
* Total i10 IndexRankings
Ranking Based On Selection :6
Leadership
governance
disaster management
climate change
ethics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
7
0.368
* Total i10 IndexRankings
Ranking Based On Selection :7
Environmental Biotechnology
Host Pathogen Interactions
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
3
0.167
* Total i10 IndexRankings
Ranking Based On Selection :8
Wastewater
nanotechnology
metal oxides
cyclodextrin inclusion complexes
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
7
0.636
* Total i10 IndexRankings
Ranking Based On Selection :9
Water Treatment
Nanotechnology
Biogas
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
* Total i10 IndexRankings
Ranking Based On Selection :10
Water and wastewater treatment
Renewable energy
Hydrogen production
Nanotechnology
Waste Bio-refineries technologies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
* Total i10 IndexRankings
Ranking Based On Selection :11
Water Management
Municipal Management
Sanitation Management
Human Settlements Management
Environmental Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
* Total i10 IndexRankings
Ranking Based On Selection :12
Environmental management
environmental education
green economy
sustainable development
climate change
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
7
0.875
* Total i10 IndexRankings
Ranking Based On Selection :13
Behavioural ecology
human-wildlife conflict
wildlife management
conservation biology
responses of individuals/populations to
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
4
0.500
* Total i10 IndexRankings
Ranking Based On Selection :14
Electrochemical technology
Nanoegineered biosensors
Energy materials
Wastewater treatments
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Total i10 IndexRankings
Ranking Based On Selection :15
Climate Change Adaptation and Renewable Energy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Total i10 IndexRankings
Ranking Based On Selection :16
Information Systems (IS)
IT-related Organizational Change
Environmental Sustainability
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
5
0.714
* Total i10 IndexRankings
Ranking Based On Selection :17
Soil science
human impacts in protected areas
wildlife conservation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
* Total i10 IndexRankings
Ranking Based On Selection :18
Environmental-Microbiology/Biotechnology
Cell biology
Environmental Pollution control
management and remediation (Water
Air
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
4
0.667
* Total i10 IndexRankings
Ranking Based On Selection :19
Environment and Sustainability Education
Science Education
Early Childhood Education
Curriculum Studies
Geography Education
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
* Total i10 IndexRankings
Ranking Based On Selection :20
Environmental management
Green economy
Food Security
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
3
0.750
* Total i10 IndexRankings
Ranking Based On Selection :21
Air Quality
Environmental Health
Human Health Risk Assessment
Exposure Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
* Total i10 IndexRankings
Ranking Based On Selection :22
Environmental Sciences
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
* Total i10 IndexRankings
Ranking Based On Selection :23
Environment management
Environmental Sciences
Environmental Impact Assessement
Tourism
Water management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
* Total i10 IndexRankings
Ranking Based On Selection :24
Environment
Acid Mine Drainage
Sustainable Development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
* Total i10 IndexRankings
Ranking Based On Selection :25
Membrane science
Materials Science
Nanotechnology and Environmental science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
Ali Akbar Zinatizadeh
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
164
142
0.866
Wastewater treatment technologies
Bioreactors
Membrane technology
Water reuse
Microbial fuel
Godwell Nhamo
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
112
93
0.830
Climate Change
Loss and Damage
Disaster Risk Reduction
SDGs
Coastal Resilience and Livelihoods
Ilunga Kamika
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
40
38
0.950
Water Microbiology
Environmental Biotechnology
Biological Wastewater Treatment
Mycotoxins
Ngole-Jeme Veronica Mpode
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
25
0.694
Environmental Sciences
Henry Bikwibili Tantoh
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
19
1.000
Environmental issues related to natural resource management
environmental governance
climate
Goonasagree Naidoo
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
7
0.368
Leadership
governance
disaster management
climate change
ethics
Martin Myer
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
3
0.167
Environmental Biotechnology
Host Pathogen Interactions
Lueta De Kock
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
11
7
0.636
Wastewater
nanotechnology
metal oxides
cyclodextrin inclusion complexes
Nomcebo H. Mthombeni
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
10
10
1.000
Water Treatment
Nanotechnology
Biogas
Taile Leswifi
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
9
1.000
Water and wastewater treatment
Renewable energy
Hydrogen production
Nanotechnology
Waste Bio-refineries technologies
Eric Nealer
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
9
5
0.556
Water Management
Municipal Management
Sanitation Management
Human Settlements Management
Environmental Management
Muchaiteyi Togo
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
7
0.875
Environmental management
environmental education
green economy
sustainable development
climate change
Kerry Slater
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
4
0.500
Behavioural ecology
human-wildlife conflict
wildlife management
conservation biology
responses of individuals/populations to
Abera Demeke Ambaye
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
Electrochemical technology
Nanoegineered biosensors
Energy materials
Wastewater treatments
Elvis Modikela Nkoana
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
Climate Change Adaptation and Renewable Energy
Grant R. Howard
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
5
0.714
Information Systems (IS)
IT-related Organizational Change
Environmental Sustainability
Gerhard Nortje
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
5
0.833
Soil science
human impacts in protected areas
wildlife conservation
Onyedikachi Ubani
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
4
0.667
Environmental-Microbiology/Biotechnology
Cell biology
Environmental Pollution control
management and remediation (Water
Air
Headman Hebe
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
5
5
1.000
Environment and Sustainability Education
Science Education
Early Childhood Education
Curriculum Studies
Geography Education
Adelaide Owusu Agyepong
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
3
0.750
Environmental management
Green economy
Food Security
Nomsa Thabethe
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
3
1.000
Air Quality
Environmental Health
Human Health Risk Assessment
Exposure Science
Dohya Monjoa Emily Matike
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
Environmental Sciences
Melissa Baker
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
3
2
0.667
Environment management
Environmental Sciences
Environmental Impact Assessement
Tourism
Water management
Suvania Naidoo
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
Environment
Acid Mine Drainage
Sustainable Development
Vimbainashe M Chakachaka
University of South Africa
Pretoria, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
2
2
1.000
Membrane science
Materials Science
Nanotechnology and Environmental science