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" (870,057 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: 3
Jerrold L Belant
Wildlife Conservation
Hunting
Livelihoods
Large Mammal Ecology
Carnivore Ecology
Metrics
H-Index
i10 Index
Citation
53
260
13,012
* Rankings
Ranking Based On Selection: 6
Timothy A Volk
biomass
sustainability
short rotation woody crops
agroforestry
phytoremediation
Metrics
H-Index
i10 Index
Citation
49
130
10,374
* Rankings
Ranking Based On Selection: 7
Lianjun Zhang
Forest Biometrics
Spatial Statistics and Modeling
Growth and Yield Modeling
Quantitative Silviculture
Metrics
H-Index
i10 Index
Citation
48
89
6,537

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

* Rankings
Ranking Based On Selection: 16
Deepak Kumar
Bioprocessing
Fermentation
Techno-Economic Analysis
Circular Bioeconomy
Multi-objective optimization
Metrics
H-Index
i10 Index
Citation
34
70
4,916
* Rankings
Ranking Based On Selection: 17
John E Drake
Tree Ecophysiology
Forest C storage
Climate Change
Ecosystem Ecology
Thermal Tolerance
Metrics
H-Index
i10 Index
Citation
34
46
5,695
* Rankings
Ranking Based On Selection: 24
Wendong Tao
sustainable wastewater treatment
nutrient recovery
anaerobic digestion
ecological engineering
Metrics
H-Index
i10 Index
Citation
32
58
3,339
* Rankings
Ranking Based On Selection: 25
Bandaru Ramarao
Separations and Purification Processes
Transport in Fibrous Media
Consolidation and Filtration Phenomena of Colloidal Suspensi
Metrics
H-Index
i10 Index
Citation
32
71
4,586
* Rankings
Ranking Based On Selection: 37
Theresa Selfa
Environmental Governance
Politics of Agri-food Systems
Sustainability Certification and Labeling
US and Latin America
Metrics
H-Index
i10 Index
Citation
27
41
2,325
* Rankings
Ranking Based On Selection: 38
David A Sonnenfeld
Environmental Politics
Environmental Sociology
Environmental Governance
Environmental Studies
Metrics
H-Index
i10 Index
Citation
27
36
5,174
* Rankings
Ranking Based On Selection: 46
Colin Beier
Forest Ecology
Coupled Natural and Human Systems
Climate Change
Ecosystem Services
Resource Governance
Metrics
H-Index
i10 Index
Citation
25
39
2,364
* Rankings
Ranking Based On Selection: 49
James F Palmer
Landscape architecture
landscape perception
visual impact assessment
environment & behavior reserch
Metrics
H-Index
i10 Index
Citation
24
46
2,964
* Rankings
Ranking Based On Selection: 57
Michael Schummer
Avian ecology/conservation&management
waterfowl conservation
wetland ecology and conservation
Metrics
H-Index
i10 Index
Citation
21
33
1,237
* Rankings
Ranking Based On Selection: 62
Tim Morin
Eddy covariance
methane fluxes
wetlands
modeling
peepers
Metrics
H-Index
i10 Index
Citation
20
25
2,139
* Rankings
Ranking Based On Selection: 63
Julia I Burton
Silviculture
Functional Traits
Forest Herb Layer
Forest Dynamics
Sustainable Forest Management
Metrics
H-Index
i10 Index
Citation
20
26
1,341
* Rankings
Ranking Based On Selection: 64
Stewart Aw Diemont
traditional ecological knowledge
restoration ecology
ecological engineering
agroecology
food systems
Metrics
H-Index
i10 Index
Citation
19
25
1,763
* Rankings
Ranking Based On Selection: 66
Danilo Fernando
Plant Reproductive Biology
Population Genetics
Evolution
Conservation
Biotechnology
Metrics
H-Index
i10 Index
Citation
19
25
992
* Rankings
Ranking Based On Selection: 76
Silje Kristiansen
Environmental Risk Health & Science Communication
Political Communication
Public Perception
Pro-environmental Behavior
Metrics
H-Index
i10 Index
Citation
15
20
1,068
* Rankings
Ranking Based On Selection: 77
Rebecca J Rundell
Evolutionary Biology
Conservation Biology
Biogeography
Adaptive Radiations
Pacific Islands Invertebrates Land Snails Meiofau
Metrics
H-Index
i10 Index
Citation
15
16
1,565
* Rankings
Ranking Based On Selection: 80
Yaqi You
Environmental Microbiology
Environmental Engineering
Environmental Science
Environmental Health
Metrics
H-Index
i10 Index
Citation
14
18
810
* Rankings
Ranking Based On Selection: 88
Paul Hirsch
Interdisciplinary Collaboration
Science and Technology Studies
Environmental Policy
Environmental Philosophy
Metrics
H-Index
i10 Index
Citation
12
16
1,939
* Rankings
Ranking Based On Selection: 92
N Roxanna Razavi
Environmental Toxicology
Limnology
Ecotoxicology
Environmental Health
Metrics
H-Index
i10 Index
Citation
11
12
512
Md Shahadat Hossain
Lignocellulosic Biomass Valorization
Biofuels
Bioplastics
Anaerobic Digestion
and PFAS Adsorption
Metrics
H-Index
i10 Index
Citation
8
8
329
Rankings
Ranking Based On Selection: 3
Wildlife Conservation
Hunting
Livelihoods
Large Mammal Ecology
Carnivore Ecology
Rankings
Ranking Based On Selection: 4
Livelihoods
tenure
climate change
REDD+
underlying causes of deforestation
Rankings
Ranking Based On Selection: 5
Biogeography
Ecology
Conservation Biology
Islands
Mammals
Rankings
Ranking Based On Selection: 6
biomass
sustainability
short rotation woody crops
agroforestry
phytoremediation
Rankings
Ranking Based On Selection: 7
Forest Biometrics
Spatial Statistics and Modeling
Growth and Yield Modeling
Quantitative Silviculture
Rankings
Ranking Based On Selection: 8
Biorefinery
Characterization
Biomaterial
Biofuels
Biochemicals
Rankings
Ranking Based On Selection: 9
oceanography
aquatic chemistry
photochemistry
aerosols
atmospheric chemistry
Rankings
Ranking Based On Selection: 10
Taxonomy
Systematic Biology
Conservation Biology
Natural History

Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast! 

Rankings
Ranking Based On Selection: 12
Freshwater Fish Ecology
Conservation
Management
Evolution
Systematics
Rankings
Ranking Based On Selection: 13
Phytoremediation
Heavy metals
Willow
Oaks
Breeding
Rankings
Ranking Based On Selection: 14
Remote Sensing (SAR & Optical)
Image Processing
UAV
Rankings
Ranking Based On Selection: 16
Bioprocessing
Fermentation
Techno-Economic Analysis
Circular Bioeconomy
Multi-objective optimization
Rankings
Ranking Based On Selection: 17
Tree Ecophysiology
Forest C storage
Climate Change
Ecosystem Ecology
Thermal Tolerance
Rankings
Ranking Based On Selection: 19
Mycology
Fungal and Plant Ecology
Molecular Ecology
Rankings
Ranking Based On Selection: 20
Geography
Watershed Science
Hydrobiogeochemistry
Rankings
Ranking Based On Selection: 21
energy crops
forest entomology
Rankings
Ranking Based On Selection: 22
Rankings
Ranking Based On Selection: 23
riparian ecology
restoration
watershed management
dendroecology
Mediterranean ecosystems
Rankings
Ranking Based On Selection: 24
sustainable wastewater treatment
nutrient recovery
anaerobic digestion
ecological engineering
Rankings
Ranking Based On Selection: 25
Separations and Purification Processes
Transport in Fibrous Media
Consolidation and Filtration Phenomena of Colloidal Suspensi
Rankings
Ranking Based On Selection: 26
plant biotechnology
chestnut
forest restoration
plant disease
Rankings
Ranking Based On Selection: 27
Forest and Wetland Ecology
Conservation Biology
Restoration Ecology
Rankings
Ranking Based On Selection: 28
Forest Economics
Resource Economics
Resource Policy
Rankings
Ranking Based On Selection: 30
remote sensing
land dynamics
spatial statistics
GIS
machine learning
Rankings
Ranking Based On Selection: 31
environmental policy
sustainability
landscape planning
carbon footprinting
Rankings
Ranking Based On Selection: 33
physical chemistry
atmospheric chemistry
combustion chemistry
clusters
Rankings
Ranking Based On Selection: 34
Dendrochronology
Ecophysiology
Climate Change
Forest Health
Rankings
Ranking Based On Selection: 36
Forest Ecology
Botany
Biodiversity
Forest Management
Silviculture
Rankings
Ranking Based On Selection: 37
Environmental Governance
Politics of Agri-food Systems
Sustainability Certification and Labeling
US and Latin America
Rankings
Ranking Based On Selection: 38
Environmental Politics
Environmental Sociology
Environmental Governance
Environmental Studies
Rankings
Ranking Based On Selection: 39
Mark Teece
Metrics
H-Index
i10 Index
Citation Counts
27
37
2,589
Rankings
Ranking Based On Selection: 41
Fish biology
aquatic entomology
restgoration ecology
Rankings
Ranking Based On Selection: 42
wildlife
animal movement
resource selection
predators
ungulates
Rankings
Ranking Based On Selection: 43
Gyu Leem
Metrics
H-Index
i10 Index
Citation Counts
25
37
1,607
Biomass Conversion
Solar Energy
Photocatalyst
Photophysics
Polymeric chromophores
Rankings
Ranking Based On Selection: 45
Metabolomics
natural products
mass spectrometry
NMR
Rankings
Ranking Based On Selection: 46
Forest Ecology
Coupled Natural and Human Systems
Climate Change
Ecosystem Services
Resource Governance
Rankings
Ranking Based On Selection: 48
fisheries ecology and management
wetlands
freshwater ecology
Rankings
Ranking Based On Selection: 49
Landscape architecture
landscape perception
visual impact assessment
environment & behavior reserch
Rankings
Ranking Based On Selection: 50
Techno-economic Analysis
Sustainable Energy
Energy Policy
Rankings
Ranking Based On Selection: 52
Forestry
Soils
Hydrology
Biomass/Bioenergy
Rankings
Ranking Based On Selection: 54
Rankings
Ranking Based On Selection: 55
Guy Lanza
Metrics
H-Index
i10 Index
Citation Counts
22
34
3,377
aquatic ecology
environmental microbiology
remediation
impacts of dams
Rankings
Ranking Based On Selection: 56
Rankings
Ranking Based On Selection: 57
Avian ecology/conservation&management
waterfowl conservation
wetland ecology and conservation
Rankings
Ranking Based On Selection: 59
Ecology
Entomology
Invasive Species
Conservation
Climate Change
Rankings
Ranking Based On Selection: 61
Physical Chemistry
Percolation
Polydispersity
Nanocomposites
Polymer Science
Rankings
Ranking Based On Selection: 62
Tim Morin
Metrics
H-Index
i10 Index
Citation Counts
20
25
2,139
Eddy covariance
methane fluxes
wetlands
modeling
peepers
Rankings
Ranking Based On Selection: 63
Silviculture
Functional Traits
Forest Herb Layer
Forest Dynamics
Sustainable Forest Management
Rankings
Ranking Based On Selection: 64
traditional ecological knowledge
restoration ecology
ecological engineering
agroecology
food systems
Rankings
Ranking Based On Selection: 65
Environmental Communication
Public Participation
Social Movements
Rankings
Ranking Based On Selection: 66
Plant Reproductive Biology
Population Genetics
Evolution
Conservation
Biotechnology
Rankings
Ranking Based On Selection: 67
Rankings
Ranking Based On Selection: 68
Microbial Ecology
Water Quality
eDNA
SARS-CoV-2
Rankings
Ranking Based On Selection: 69
Alex Weir
Metrics
H-Index
i10 Index
Citation Counts
18
32
4,570
mycology
fungus-insect interactions
Laboulbeniales
Rankings
Ranking Based On Selection: 70
Landscape Architecture
Environmental Planning
Watershed Management
Rankings
Ranking Based On Selection: 71
Ecological Economics
Social-ecological systems
Natural Resources
Rankings
Ranking Based On Selection: 74
Rankings
Ranking Based On Selection: 75
Wood chemistry
delignification
biorefinery
lignin
Rankings
Ranking Based On Selection: 76
Environmental Risk Health & Science Communication
Political Communication
Public Perception
Pro-environmental Behavior
Rankings
Ranking Based On Selection: 77
Evolutionary Biology
Conservation Biology
Biogeography
Adaptive Radiations
Pacific Islands Invertebrates Land Snails Meiofau
Rankings
Ranking Based On Selection: 78
Rankings
Ranking Based On Selection: 79
Biotechnology
Tree Restoration
American Chestnut
Rankings
Ranking Based On Selection: 80
Environmental Microbiology
Environmental Engineering
Environmental Science
Environmental Health
Rankings
Ranking Based On Selection: 82
Environmental Sociology
Environmental Inequality
Disproportionality
Rankings
Ranking Based On Selection: 83
Artificial Intelligence
Sustainable Construction
Industrialized Construction
Rankings
Ranking Based On Selection: 84
forest ecosystem management
forest restoration
science education
Rankings
Ranking Based On Selection: 86
Wildlife ecology
habitat relationships
endangered species management
Rankings
Ranking Based On Selection: 87
Wood Anatomy
wood identification
Rankings
Ranking Based On Selection: 88
Interdisciplinary Collaboration
Science and Technology Studies
Environmental Policy
Environmental Philosophy
Rankings
Ranking Based On Selection: 89
forest ecology
wildlife ecology
social-ecological systems
Rankings
Ranking Based On Selection: 91
Aquatic Chemistry
Photochemistry
Natural Products
Reaction Mechanisms
Structure Elucidation
Rankings
Ranking Based On Selection: 92
Environmental Toxicology
Limnology
Ecotoxicology
Environmental Health
Rankings
Ranking Based On Selection: 94
Rankings
Ranking Based On Selection: 96
solid state inorganic chemistry
chemistry education
Rankings
Ranking Based On Selection: 97
Rankings
Ranking Based On Selection: 98
Lignocellulosic Biomass Valorization
Biofuels
Bioplastics
Anaerobic Digestion
and PFAS Adsorption
Rankings
Ranking Based On Selection: 99
freshwater ecology
stable isotopes
macrosystem ecology
water quality
Rankings
Ranking Based On Selection: 100
Urban planning
Landscape Architecture
Public Administration
Architecture