Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: 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".
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :1
Materials Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
128
83
0.648
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :2
Physical Hydrology
Water Quality
Watershed Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
89
72
0.809
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :3
Sustainability
environmental management
climate change mitigation and adaptation strategies
water resources management
built
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
99
69
0.697
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :4
Symbioses
fungi
evolutionary biology
ecology
systematics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
90
56
0.622
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :5
Water Management
Ecological economics
political ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
54
0.711
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :6
Environmental Assessment
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
59
52
0.881
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :7
land and water management
environmental management
agri-food systems
GIS and remote sensing
Environmental change
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
48
42
0.875
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :8
air quality
air quality management
air pollution
environmental policy
carbon management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
97
40
0.412
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :9
environmental engineering
environmental microbiology
water infrastructure
antibiotic resistance
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
29
0.967
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :10
Environmental Science
Atmospheric Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
25
0.806
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :11
Savanna Ecology
Community Ecology
Forbs
Herbivory
Mopane
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
25
0.833
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :12
Herpetofauna health
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
24
0.558
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :13
ice nucleation
climate
aerosol
cloud
freezing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
21
0.875
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :14
soil microbiology
microbial ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
19
0.731
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :15
Chemistry
Atmospheric science
Climatology
Environmental science
Systems engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
19
0.792
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :16
Herpatofaunal and bird haemoparasite taxonomy and phylogeny
conservation biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
18
0.900
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :17
water microbiology
recreational waters
Legionella
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
16
0.571
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :18
Water Resources Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
16
0.593
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :19
Environmental and development economics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
16
0.889
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :20
Environmental Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
12
0.857
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :21
water-climate interactions
particulate matter
toxic metals
water security
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
10
0.588
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :22
Biosystems Engineering
Environmental Engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
10
0.833
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :23
Wastewater Treatment
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :24
Environmental Technology
Wastewater Treatment
Waste Management
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
* Last 6 Years i10 IndexRankings
Ranking Based On Selection :25
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
6
0.500
Ayyakkannu Manivannan
West Virginia University
Morgantown, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
128
83
0.648
Jason Hubbart
West Virginia University
Morgantown, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
89
72
0.809
Physical Hydrology
Water Quality
Watershed Management
Colin Booth
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
99
69
0.697
Sustainability
environmental management
climate change mitigation and adaptation strategies
water resources management
built
Joseph Morton
West Virginia University
Morgantown, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
90
56
0.622
Symbioses
fungi
evolutionary biology
ecology
systematics
Chad Staddon
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
54
0.711
Water Management
Ecological economics
political ecology
Francois Retief
North West University
Potchefstroom, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
59
52
0.881
Environmental Assessment
David Oscar Yawson
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
48
42
0.875
land and water management
environmental management
agri-food systems
GIS and remote sensing
Environmental change
James WS Longhurst
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
97
40
0.412
air quality
air quality management
air pollution
environmental policy
carbon management
Emily Garner
West Virginia University
Morgantown, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
29
0.967
environmental engineering
environmental microbiology
water infrastructure
antibiotic resistance
Erik Crosman
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
31
25
0.806
Environmental Science
Atmospheric Science
Frances Siebert
North West University
Potchefstroom, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
30
25
0.833
Savanna Ecology
Community Ecology
Forbs
Herbivory
Mopane
Ché Weldon
North West University
Potchefstroom, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
24
0.558
Naruki Hiranuma
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
21
0.875
ice nucleation
climate
aerosol
cloud
freezing
Sarina Claassens
North West University
Potchefstroom, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
19
0.731
soil microbiology
microbial ecology
Andrew D Venter
North West University
Potchefstroom, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
19
0.792
Chemistry
Atmospheric science
Climatology
Environmental science
Systems engineering
Courtney Cook
North West University
Potchefstroom, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
18
0.900
Herpatofaunal and bird haemoparasite taxonomy and phylogeny
conservation biology
Athena Mavridou
University of West Attica
Egaleo, Greece
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
28
16
0.571
water microbiology
recreational waters
Legionella
Adrian Cashman
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
16
0.593
Water Resources Management
Suhyun Jung
West Virginia University
Morgantown, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
16
0.889
Environmental and development economics
Dirk Cilliers
North West University
Potchefstroom, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
14
12
0.857
Environmental Management
Nnenesi Kgabi
North West University
Potchefstroom, South Africa
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
10
0.588
water-climate interactions
particulate matter
toxic metals
water security
Fernando Rojano Aguilar
West Virginia State University
Institute, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
10
0.833
Biosystems Engineering
Environmental Engineering
Erick Butler
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
Trina Halfhide
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
7
7
1.000
Environmental Technology
Wastewater Treatment
Waste Management
Emma Smith
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
12
6
0.500