Top 100 Scientists

World Top 100 Scientists 2025

Top 100 scientists can be ranked globally or specific to the following regions including Africa, Asia, Europe, North America, Latin America, Oceania, Arab League, ASEAN, EECA, and BRICS based on total H-index scores without any breakdown by subject areas. Top 100 rankings in the world, in a continent, or a region include standardized subjects areas of Agriculture & Forestry, Arts, Design and Architecture, Business & Management, Economics & Econometrics, Education, Engineering & Technology, History, Philosophy, Theology, Law/Law and Legal Studies, Medical and Health Sciences, Natural Sciences, Social Sciences, Art and Humanities Rankings and Social Sciences and Humanities Rankings BETA VERSION. Subject field ranking in world, region, country and university is beta version since subject field "others" (873,864 scientists profile whose branch cannot be determined, not yet edited or determined) is excluded, so the ranking will change as the others fields are edited. Please note that. Subjects indicated as “ * others ” will not be included in the ranking by regions and subjects.

* Rankings
Ranking Based On Selection :2
Bjarni D Sigurdsson
ecosystem ecology
climate change
land-use change
Metrics
H-Index
i10 Index
Citation
37
85
6,992
* Rankings
Ranking Based On Selection :5
Asa L Aradottir
Ecological restoration
birch woodlands
succession
ecosystem services
carbon sequestration
Metrics
H-Index
i10 Index
Citation
24
37
1,878
* Rankings
Ranking Based On Selection :8
Alejandro Salazar
Soil biogeochemistry
Biocrust
Environmental microbiology
Global change
Metrics
H-Index
i10 Index
Citation
10
10
1,090
* Rankings
Ranking Based On Selection :9
Emmanuel Pagneux
Recreational ecology
Flood & volcanic risks
risk governance
risk perception
GIS applied to the Disaster Risk Management cycl
Metrics
H-Index
i10 Index
Citation
8
7
342
* Rankings
Ranking Based On Selection :12
Siv Skar
Horticulture
environment technology
food production
Metrics
H-Index
i10 Index
Citation
3
3
246
* Rankings
Ranking Based On Selection :13
Laura Barbero Palacios
Zoogeochemistry
Biogeochemistry
Ecology
Zoology
Wildlife Conservation and Management
Metrics
H-Index
i10 Index
Citation
3
0
12
* Rankings
Ranking Based On Selection :14
Jónína Sigríður Þorláksdóttir
social-ecological systems
environmental management
sustainable land use
stakeholder engagement
participatory approaches
Metrics
H-Index
i10 Index
Citation
1
0
7
* Rankings
Ranking Based On Selection :15
Asra Salimi
Remote Sensing
SAR
Climate Change Impacts
Land-Use Change
Artificial Intelligence
Metrics
H-Index
i10 Index
Citation
1
0
3
Rankings
Ranking Based On Selection: 1
Olafur Arnalds
Metrics
H-Index
i10 Index
Citation Counts
44
84
5,499
Rankings
Ranking Based On Selection: 2
Bjarni D Sigurdsson
Metrics
H-Index
i10 Index
Citation Counts
37
85
6,992
ecosystem ecology
climate change
land-use change
Rankings
Ranking Based On Selection: 3
Isabel C Barrio
Metrics
H-Index
i10 Index
Citation Counts
31
56
2,862
Rankings
Ranking Based On Selection: 4
Pavla Dagsson Waldhauserova
Metrics
H-Index
i10 Index
Citation Counts
26
38
1,875
Rankings
Ranking Based On Selection: 5
Asa L Aradottir
Metrics
H-Index
i10 Index
Citation Counts
24
37
1,878
Ecological restoration
birch woodlands
succession
ecosystem services
carbon sequestration
Rankings
Ranking Based On Selection: 6
Jon Hallsteinn Hallsson
Metrics
H-Index
i10 Index
Citation Counts
20
26
1,726
Rankings
Ranking Based On Selection: 7
Erla Sturludóttir
Metrics
H-Index
i10 Index
Citation Counts
13
15
534
Rankings
Ranking Based On Selection: 8
Alejandro Salazar
Metrics
H-Index
i10 Index
Citation Counts
10
10
1,090
Soil biogeochemistry
Biocrust
Environmental microbiology
Global change
Rankings
Ranking Based On Selection: 9
Emmanuel Pagneux
Metrics
H-Index
i10 Index
Citation Counts
8
7
342
Recreational ecology
Flood & volcanic risks
risk governance
risk perception
GIS applied to the Disaster Risk Management cycl
Rankings
Ranking Based On Selection: 10
Fluturë Novakazi
Metrics
H-Index
i10 Index
Citation Counts
7
7
211
Rankings
Ranking Based On Selection: 11
Hrannar Smári Hilmarsson
Metrics
H-Index
i10 Index
Citation Counts
4
4
134
Rankings
Ranking Based On Selection: 12
Siv Skar
Metrics
H-Index
i10 Index
Citation Counts
3
3
246
Horticulture
environment technology
food production
Rankings
Ranking Based On Selection: 13
Laura Barbero Palacios
Metrics
H-Index
i10 Index
Citation Counts
3
0
12
Zoogeochemistry
Biogeochemistry
Ecology
Zoology
Wildlife Conservation and Management
Rankings
Ranking Based On Selection: 14
Jónína Sigríður Þorláksdóttir
Metrics
H-Index
i10 Index
Citation Counts
1
0
7
social-ecological systems
environmental management
sustainable land use
stakeholder engagement
participatory approaches
Rankings
Ranking Based On Selection: 15
Asra Salimi
Metrics
H-Index
i10 Index
Citation Counts
1
0
3
Remote Sensing
SAR
Climate Change Impacts
Land-Use Change
Artificial Intelligence