University, Subject, Country, Region, World
United Nations Educational, Scientific and Cultural Organization 57 Scientists Subject Rankings - 2025
The AD Scientific Index (Alper-Doger Scientific Index) provides the most comprehensive analysis across 13 main fields and 197 sub-branches at global, national, and regional levels. These analyses are based on indicators such as the H-index, i10-index, and citation count, including their values from the last 6 years. As of Jan 31, 2025, the rankings are determined according to the Total H Index. BETA VERSION: The subject field rankings for the world, regions, countries, and universities are currently in their Beta phase. This is due to the exclusion of (870.053) scientists categorized under ‘Others’, whose profiles have yet to be determined, edited, or classified. As updates are made to these fields, the rankings will be adjusted accordingly. Note: Please keep this in mind while reviewing the rankings. For further details, explore our [University Subject Rankings].
* Total H IndexRankings
Ranking Based On Selection: 1
biotechnology
microbiology
wastewater treatment
environmental engineering
pollution prevention and resource recovery
Metrics
H-Index
i10 Index
Citation Counts
51
110
9,276
* Total H IndexRankings
Ranking Based On Selection: 2
Water
environment
irrigation
modeling
hydrology
Metrics
H-Index
i10 Index
Citation Counts
39
111
9,317
* Total H IndexRankings
Ranking Based On Selection: 3
education
sustainable development
economics
Metrics
H-Index
i10 Index
Citation Counts
37
56
15,237
* Total H IndexRankings
Ranking Based On Selection: 4
higher education policy
comparative education
educational technology
Metrics
H-Index
i10 Index
Citation Counts
34
64
5,678
* Total H IndexRankings
Ranking Based On Selection: 5
marine biology
Metrics
H-Index
i10 Index
Citation Counts
31
42
6,132
* Total H IndexRankings
Ranking Based On Selection: 6
Water and climate
Metrics
H-Index
i10 Index
Citation Counts
29
44
3,108
* Total H IndexRankings
Ranking Based On Selection: 7
conservation
biodiversity
anthropology
policy
Metrics
H-Index
i10 Index
Citation Counts
28
37
5,617
* Total H IndexRankings
Ranking Based On Selection: 8
Agroforestry
Biodiversity
Climate Change
Food Security
Sustainable Development
Metrics
H-Index
i10 Index
Citation Counts
27
42
2,786
* Total H IndexRankings
Ranking Based On Selection: 9
Pedagogía
Educación
Reformas Educativas
Cambio Educativo
Metrics
H-Index
i10 Index
Citation Counts
22
34
1,747
* Total H IndexRankings
Ranking Based On Selection: 10
climate change
ocean
environment
diplomacy
Metrics
H-Index
i10 Index
Citation Counts
20
28
6,789
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* Total H IndexRankings
Ranking Based On Selection: 11
AI and education
digital learning
ICT in education
Metrics
H-Index
i10 Index
Citation Counts
20
37
2,273
* Total H IndexRankings
Ranking Based On Selection: 12
Economics of Education
Education policy
Education data
Metrics
H-Index
i10 Index
Citation Counts
19
25
1,698
* Total H IndexRankings
Ranking Based On Selection: 13
ESD
UNESCO
education for sustainable development
comparative education
sociology of ed
Metrics
H-Index
i10 Index
Citation Counts
19
30
3,042
* Total H IndexRankings
Ranking Based On Selection: 14
marine biology
Metrics
H-Index
i10 Index
Citation Counts
19
22
3,033
* Total H IndexRankings
Ranking Based On Selection: 15
Metrics
H-Index
i10 Index
Citation Counts
19
21
4,198
* Total H IndexRankings
Ranking Based On Selection: 16
théorie politique
politique comparée
Metrics
H-Index
i10 Index
Citation Counts
19
32
1,669
* Total H IndexRankings
Ranking Based On Selection: 17
Education
Metrics
H-Index
i10 Index
Citation Counts
17
30
1,684
* Total H IndexRankings
Ranking Based On Selection: 18
Education
Metrics
H-Index
i10 Index
Citation Counts
16
22
1,754
* Total H IndexRankings
Ranking Based On Selection: 19
Historia
Derecho
Política en Cuba y AMérica Latina
Metrics
H-Index
i10 Index
Citation Counts
13
20
619
* Total H IndexRankings
Ranking Based On Selection: 20
marine food web studies
plankton
ocean acidification
ecological stoichiometry
Metrics
H-Index
i10 Index
Citation Counts
12
14
915
* Total H IndexRankings
Ranking Based On Selection: 21
Water
Metrics
H-Index
i10 Index
Citation Counts
12
13
1,525
* Total H IndexRankings
Ranking Based On Selection: 22
Science and technology policy
Science and technology indicators
Metrics
H-Index
i10 Index
Citation Counts
10
10
1,440
* Total H IndexRankings
Ranking Based On Selection: 23
Online Education Consultant and strategist working for different organisations of the United Nations
SFHEA
Metrics
H-Index
i10 Index
Citation Counts
10
10
504
* Total H IndexRankings
Ranking Based On Selection: 24
ocean data management
marine information management
capacity development
Metrics
H-Index
i10 Index
Citation Counts
8
6
618
* Total H IndexRankings
Ranking Based On Selection: 25
Metrics
H-Index
i10 Index
Citation Counts
8
5
193
HJ Gijzen
Metrics
H-Index
i10-Index
Citation Counts
51
110
9,276
biotechnology
microbiology
wastewater treatment
environmental engineering
pollution prevention and resource recovery
Shahbaz Khan
Metrics
H-Index
i10-Index
Citation Counts
39
111
9,317
Water
environment
irrigation
modeling
hydrology
Anantha K. Duraiappah
Metrics
H-Index
i10-Index
Citation Counts
37
56
15,237
education
sustainable development
economics
Francesc Pedró
Metrics
H-Index
i10-Index
Citation Counts
34
64
5,678
higher education policy
comparative education
educational technology
Ward Appeltans
Metrics
H-Index
i10-Index
Citation Counts
31
42
6,132
Koen Verbist
Metrics
H-Index
i10-Index
Citation Counts
29
44
3,108
Maximilien Guèze
Metrics
H-Index
i10-Index
Citation Counts
28
37
5,617
conservation
biodiversity
anthropology
policy
Samuel Tetteh Partey
Metrics
H-Index
i10-Index
Citation Counts
27
42
2,786
Agroforestry
Biodiversity
Climate Change
Food Security
Sustainable Development
Luis Bonilla-Molina
Metrics
H-Index
i10-Index
Citation Counts
22
34
1,747
Pedagogía
Educación
Reformas Educativas
Cambio Educativo
Fanny Douvere
Metrics
H-Index
i10-Index
Citation Counts
20
28
6,789
climate change
ocean
environment
diplomacy
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Fengchun Miao苗逢春|苗逢春
Metrics
H-Index
i10-Index
Citation Counts
20
37
2,273
Suguru Mizunoya
Metrics
H-Index
i10-Index
Citation Counts
19
25
1,698
Economics of Education
Education policy
Education data
Yoko Mochizuki
Metrics
H-Index
i10-Index
Citation Counts
19
30
3,042
ESD
UNESCO
education for sustainable development
comparative education
sociology of ed
Pieter Provoost
Metrics
H-Index
i10-Index
Citation Counts
19
22
3,033
Kirsten Isensee
Metrics
H-Index
i10-Index
Citation Counts
19
21
4,198
John Crowley
Metrics
H-Index
i10-Index
Citation Counts
19
32
1,669
Njora Hungi
Metrics
H-Index
i10-Index
Citation Counts
17
30
1,684
Sobhi TAWIL
Metrics
H-Index
i10-Index
Citation Counts
16
22
1,754
Julio César Guanche
Metrics
H-Index
i10-Index
Citation Counts
13
20
619
Historia
Derecho
Política en Cuba y AMérica Latina
Katherina Schoo
Metrics
H-Index
i10-Index
Citation Counts
12
14
915
marine food web studies
plankton
ocean acidification
ecological stoichiometry
Youssef Filali-Meknassi
Metrics
H-Index
i10-Index
Citation Counts
12
13
1,525
Ernesto Fernandez Polcuch
Metrics
H-Index
i10-Index
Citation Counts
10
10
1,440
Science and technology policy
Science and technology indicators
Maria ToroTroconis
Metrics
H-Index
i10-Index
Citation Counts
10
10
504
Online Education Consultant and strategist working for different organisations of the United Nations
SFHEA
Peter Pissierssens
Metrics
H-Index
i10-Index
Citation Counts
8
6
618
ocean data management
marine information management
capacity development
Denis Pitzalis
Metrics
H-Index
i10-Index
Citation Counts
8
5
193