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
Sven Uthicke
Molecular Ecology
Ocean Acidification
Climate change
Land Runoff
Crown-of-Thorns-Seastar
Metrics
H-Index
i10 Index
Citation
68
182
15,198
* Rankings
Ranking Based On Selection :3
Kenneth Rn Anthony
Nature conservation
quantitative decision science
risk analysis
systems modelling
Metrics
H-Index
i10 Index
Citation
57
98
12,580
* Rankings
Ranking Based On Selection :4
Rebecca Fisher
Ecological Risk Assessment Modelling
Ecology
Tropical Ecosystems
Coral Reefs
Environmental Science
Metrics
H-Index
i10 Index
Citation
50
84
8,380
* Rankings
Ranking Based On Selection :6
Britta Schaffelke
coral reefs
environmental management
water quality
science informing policy
marine introduced species
Metrics
H-Index
i10 Index
Citation
49
83
8,733
* Rankings
Ranking Based On Selection :7
Ross Jones
Coral
Tropical Marine Pollution
Sediments
Dredging
Ecotoxicology
Metrics
H-Index
i10 Index
Citation
48
80
8,674
* Rankings
Ranking Based On Selection :10
Dianne Mclean
Fisheries
Fish ecology
decommissioning
offshore renewable energy
subsea infrastructure
Metrics
H-Index
i10 Index
Citation
40
68
5,243
* Rankings
Ranking Based On Selection :11
Christopher J. Fulton
Marine Biology
Marine Ecology
Macroalgae
Seascape ecology
Metrics
H-Index
i10 Index
Citation
39
75
5,852
* Rankings
Ranking Based On Selection :13
Michele Thums
Animal movement
biologging
telemetry
marine ecology
Metrics
H-Index
i10 Index
Citation
38
57
5,262
* Rankings
Ranking Based On Selection :16
Karen Miller
coral
mesophotic reefs
benthic biodiversity
population connectivity
ecology
Metrics
H-Index
i10 Index
Citation
37
56
4,499
* Rankings
Ranking Based On Selection :18
Mike Cappo
fish biology
baited video techniques
otoliths
fishing
lutjanids
Metrics
H-Index
i10 Index
Citation
34
63
6,174
* Rankings
Ranking Based On Selection :19
Yun Kit Yeoh
microbial ecology
human microbiome
microbiome
environmental microbiology
metagenomics
Metrics
H-Index
i10 Index
Citation
32
38
6,875
* Rankings
Ranking Based On Selection :20
Barbara Robson
Aquatic ecosystems
Estuaries
Great Barrier Reef
Biogeochemical Modelling
Metrics
H-Index
i10 Index
Citation
32
67
5,218
* Rankings
Ranking Based On Selection :21
Ben Radford
Spatial Modelling and Ecology
Remote Sensing
Ecological Process Modelling
Macro Ecology
GIS
Metrics
H-Index
i10 Index
Citation
32
66
5,434
* Rankings
Ranking Based On Selection :23
Marjetta (Marji) Puotinen
geography
spatial analysis
geocomputation
tropical cyclone
coral reef
Metrics
H-Index
i10 Index
Citation
31
49
5,714
* Rankings
Ranking Based On Selection :27
Renata Ferrari
Environmental Change
3D mapping & modeling
coral reef ecology
benthic dynamics and modeling
Metrics
H-Index
i10 Index
Citation
29
42
3,701
* Rankings
Ranking Based On Selection :33
Alan Duckworth
Marine Ecology
Community and population dynamics
Conservation Biology
Enviromental stressors
Aquaculture and Fisheries
Metrics
H-Index
i10 Index
Citation
28
40
2,880
* Rankings
Ranking Based On Selection :34
Diego Barneche
Stats
Marine Biology
Programming for science
Ecology
Theory
Metrics
H-Index
i10 Index
Citation
27
34
3,996
* Rankings
Ranking Based On Selection :35
Juan Carlos Ortiz
Integrative Ecology
Ecosystem functioning
Community ecology
Symbiosis
coral reefs
Metrics
H-Index
i10 Index
Citation
27
34
2,899
* Rankings
Ranking Based On Selection :45
Lone Hoj
microbial ecology
aquaculture probiotics
coral restoration
crown-of-thorns sea star
Metrics
H-Index
i10 Index
Citation
22
29
1,859
* Rankings
Ranking Based On Selection :46
Matthew Nitschke
Photosynthetic Symbiosis
Chlorophyll Fluorescence
Symbiodiniaceae
Microbial Ecology
Coral Reefs
Metrics
H-Index
i10 Index
Citation
21
27
1,286
* Rankings
Ranking Based On Selection :47
Florita Flores
marine biology
conservation biology
ecotoxicology
coral reef ecology
Metrics
H-Index
i10 Index
Citation
21
26
1,713
* Rankings
Ranking Based On Selection :48
Heidi M. Luter
marine microbiology
sponge biology & ecology
environmental impacts
Metrics
H-Index
i10 Index
Citation
21
31
1,771
* Rankings
Ranking Based On Selection :53
Vinay Udyawer
Spatial Ecology
Conservation Biology
Fisheries
Metrics
H-Index
i10 Index
Citation
19
31
1,555
* Rankings
Ranking Based On Selection :54
Luke Thomas
molecular ecology
conservation genetics
coral reefs
Metrics
H-Index
i10 Index
Citation
19
24
1,166
* Rankings
Ranking Based On Selection :55
Cathie Page
Coral biology
coral ecology
reef restoration
coral disease
Metrics
H-Index
i10 Index
Citation
19
23
2,978
* Rankings
Ranking Based On Selection :60
Katherine Cure
Marine Ecology
Reef Fish Biogeography and Evolution
Invasive Species
Science Communication
Management
Metrics
H-Index
i10 Index
Citation
15
18
2,216
* Rankings
Ranking Based On Selection :62
Darren J Koppel
Ecotoxicology
Environmental Chemistry
Metals
Pollution
Contamination
Metrics
H-Index
i10 Index
Citation
15
17
468
* Rankings
Ranking Based On Selection :63
Jim Underwood
population genetics
restoration
Indigenous partnerships
Metrics
H-Index
i10 Index
Citation
15
16
1,209
* Rankings
Ranking Based On Selection :65
David J Hughes
Marine Biology
Coral Ecophysiology
Biological Oceanography
Chl-a Fluorescence
Photosynthesis
Metrics
H-Index
i10 Index
Citation
14
20
767
* Rankings
Ranking Based On Selection :66
Michelle Jonker
juvenile corals
coral reefs
reef recovery
crustose coralline algae
sea birds
Metrics
H-Index
i10 Index
Citation
14
14
1,298
* Rankings
Ranking Based On Selection :67
Virginie Van Dongen-Vogels
oceanography
bio-physical interaction
ecology
environmental sciences
satellite remote sensing
Metrics
H-Index
i10 Index
Citation
14
14
953
* Rankings
Ranking Based On Selection :69
Libby Evans-Illidge
Indigenous science partnerships
Marine policy
Sponges
Chemical Ecology
Marine Biotechnology
Metrics
H-Index
i10 Index
Citation
14
15
673
* Rankings
Ranking Based On Selection :71
Renee Gruber
Physical-biological interactions
Coastal biogeochemistry
Fluid dynamics
Water quality
Metrics
H-Index
i10 Index
Citation
13
14
760
* Rankings
Ranking Based On Selection :72
Bozena Wojtasiewicz
Ocean Optics
Ocean Colour Remote Sensing
Phytoplankton
Primary Production
Metrics
H-Index
i10 Index
Citation
12
13
482
* Rankings
Ranking Based On Selection :73
Deepa Varkey
Molecular Biology
Microbial Genomics
Microbial Ecology
Fluorometry
Microalgae
Metrics
H-Index
i10 Index
Citation
12
12
393
* Rankings
Ranking Based On Selection :80
Phillipa Wilson
animal movement
marine turtles
fish ecology
management and conservation of threatened species
Metrics
H-Index
i10 Index
Citation
10
11
309
Yong Kit Samuel Chan
Coral reefs
Community ecology
Historical ecology
Metrics
H-Index
i10 Index
Citation
7
7
409
Mikaela Nordborg
Marine Ecotoxicology
Coral Reefs
Reef Restoration
Petroleum Oil
Ultraviolet Light
Metrics
H-Index
i10 Index
Citation
7
7
321
Paul Rigby
Field Robotics
Machine Learning
Marine Technology
Metrics
H-Index
i10 Index
Citation
7
7
346
Christopher A Brunner
Coral Reproduction
Climate Change
Ocean Acidification
Sediments
Ecotoxicology
Metrics
H-Index
i10 Index
Citation
4
3
104
Jordi Ryall
aquatic ecology
ecotoxicology
larval research
Metrics
H-Index
i10 Index
Citation
3
2
66
Nadine M Boulotte
Symbiosis
Coral reproduction and biology
Coral reefs restoration
Lipidomics
Metabarcoding
Metrics
H-Index
i10 Index
Citation
2
2
257
Karina Shechtman
Coral disease
coral ecology at the GBR
Red Sea and Mediterranean Sea
Metrics
H-Index
i10 Index
Citation
1
1
62
Rankings
Ranking Based On Selection: 1
Andrew Negri
Metrics
H-Index
i10 Index
Citation Counts
69
159
15,161
Rankings
Ranking Based On Selection: 2
Sven Uthicke
Metrics
H-Index
i10 Index
Citation Counts
68
182
15,198
Molecular Ecology
Ocean Acidification
Climate change
Land Runoff
Crown-of-Thorns-Seastar
Rankings
Ranking Based On Selection: 3
Kenneth Rn Anthony
Metrics
H-Index
i10 Index
Citation Counts
57
98
12,580
Nature conservation
quantitative decision science
risk analysis
systems modelling
Rankings
Ranking Based On Selection: 4
Rebecca Fisher
Metrics
H-Index
i10 Index
Citation Counts
50
84
8,380
Ecological Risk Assessment Modelling
Ecology
Tropical Ecosystems
Coral Reefs
Environmental Science
Rankings
Ranking Based On Selection: 5
Line Kolind Bay
Metrics
H-Index
i10 Index
Citation Counts
49
93
7,626
Rankings
Ranking Based On Selection: 6
Britta Schaffelke
Metrics
H-Index
i10 Index
Citation Counts
49
83
8,733
coral reefs
environmental management
water quality
science informing policy
marine introduced species
Rankings
Ranking Based On Selection: 7
Ross Jones
Metrics
H-Index
i10 Index
Citation Counts
48
80
8,674
Coral
Tropical Marine Pollution
Sediments
Dredging
Ecotoxicology
Rankings
Ranking Based On Selection: 8
Pj Doherty
Metrics
H-Index
i10 Index
Citation Counts
48
84
9,271
Rankings
Ranking Based On Selection: 9
Kroon F
Metrics
H-Index
i10 Index
Citation Counts
41
93
6,454
Rankings
Ranking Based On Selection: 10
Dianne Mclean
Metrics
H-Index
i10 Index
Citation Counts
40
68
5,243
Fisheries
Fish ecology
decommissioning
offshore renewable energy
subsea infrastructure
Rankings
Ranking Based On Selection: 11
Christopher J. Fulton
Metrics
H-Index
i10 Index
Citation Counts
39
75
5,852
Marine Biology
Marine Ecology
Macroalgae
Seascape ecology
Rankings
Ranking Based On Selection: 12
Cherie Motti
Metrics
H-Index
i10 Index
Citation Counts
39
90
5,319
Rankings
Ranking Based On Selection: 13
Michele Thums
Metrics
H-Index
i10 Index
Citation Counts
38
57
5,262
Animal movement
biologging
telemetry
marine ecology
Rankings
Ranking Based On Selection: 16
Karen Miller
Metrics
H-Index
i10 Index
Citation Counts
37
56
4,499
coral
mesophotic reefs
benthic biodiversity
population connectivity
ecology
Rankings
Ranking Based On Selection: 17
Martial Depczynski
Metrics
H-Index
i10 Index
Citation Counts
35
48
5,911
Rankings
Ranking Based On Selection: 18
Mike Cappo
Metrics
H-Index
i10 Index
Citation Counts
34
63
6,174
fish biology
baited video techniques
otoliths
fishing
lutjanids
Rankings
Ranking Based On Selection: 19
Yun Kit Yeoh
Metrics
H-Index
i10 Index
Citation Counts
32
38
6,875
microbial ecology
human microbiome
microbiome
environmental microbiology
metagenomics
Rankings
Ranking Based On Selection: 20
Barbara Robson
Metrics
H-Index
i10 Index
Citation Counts
32
67
5,218
Aquatic ecosystems
Estuaries
Great Barrier Reef
Biogeochemical Modelling
Rankings
Ranking Based On Selection: 21
Ben Radford
Metrics
H-Index
i10 Index
Citation Counts
32
66
5,434
Spatial Modelling and Ecology
Remote Sensing
Ecological Process Modelling
Macro Ecology
GIS
Rankings
Ranking Based On Selection: 22
Michael J Emslie
Metrics
H-Index
i10 Index
Citation Counts
31
44
5,439
Rankings
Ranking Based On Selection: 23
Marjetta (Marji) Puotinen
Metrics
H-Index
i10 Index
Citation Counts
31
49
5,714
geography
spatial analysis
geocomputation
tropical cyclone
coral reef
Rankings
Ranking Based On Selection: 24
James P Gilmour
Metrics
H-Index
i10 Index
Citation Counts
31
52
9,077
Rankings
Ranking Based On Selection: 27
Renata Ferrari
Metrics
H-Index
i10 Index
Citation Counts
29
42
3,701
Environmental Change
3D mapping & modeling
coral reef ecology
benthic dynamics and modeling
Rankings
Ranking Based On Selection: 32
Richard Brinkman
Metrics
H-Index
i10 Index
Citation Counts
28
53
2,766
Rankings
Ranking Based On Selection: 33
Alan Duckworth
Metrics
H-Index
i10 Index
Citation Counts
28
40
2,880
Marine Ecology
Community and population dynamics
Conservation Biology
Enviromental stressors
Aquaculture and Fisheries
Rankings
Ranking Based On Selection: 34
Diego Barneche
Metrics
H-Index
i10 Index
Citation Counts
27
34
3,996
Stats
Marine Biology
Programming for science
Ecology
Theory
Rankings
Ranking Based On Selection: 35
Juan Carlos Ortiz
Metrics
H-Index
i10 Index
Citation Counts
27
34
2,899
Integrative Ecology
Ecosystem functioning
Community ecology
Symbiosis
coral reefs
Rankings
Ranking Based On Selection: 36
Emma Kennedy
Metrics
H-Index
i10 Index
Citation Counts
26
33
5,472
Rankings
Ranking Based On Selection: 37
Scott A. Wooldridge
Metrics
H-Index
i10 Index
Citation Counts
26
38
3,273
Rankings
Ranking Based On Selection: 38
Luciana Cerqueira Ferreira
Metrics
H-Index
i10 Index
Citation Counts
25
31
2,364
Movement and spatial ecology - Marine megafauna -
Rankings
Ranking Based On Selection: 40
Parsons
Metrics
H-Index
i10 Index
Citation Counts
24
41
2,104
Rankings
Ranking Based On Selection: 43
Neal Cantin
Metrics
H-Index
i10 Index
Citation Counts
23
37
6,728
Rankings
Ranking Based On Selection: 45
Lone Hoj
Metrics
H-Index
i10 Index
Citation Counts
22
29
1,859
microbial ecology
aquaculture probiotics
coral restoration
crown-of-thorns sea star
Rankings
Ranking Based On Selection: 46
Matthew Nitschke
Metrics
H-Index
i10 Index
Citation Counts
21
27
1,286
Photosynthetic Symbiosis
Chlorophyll Fluorescence
Symbiodiniaceae
Microbial Ecology
Coral Reefs
Rankings
Ranking Based On Selection: 47
Florita Flores
Metrics
H-Index
i10 Index
Citation Counts
21
26
1,713
marine biology
conservation biology
ecotoxicology
coral reef ecology
Rankings
Ranking Based On Selection: 48
Heidi M. Luter
Metrics
H-Index
i10 Index
Citation Counts
21
31
1,771
marine microbiology
sponge biology & ecology
environmental impacts
Rankings
Ranking Based On Selection: 49
Leanne M. Currey-Randall
Metrics
H-Index
i10 Index
Citation Counts
21
29
1,394
Rankings
Ranking Based On Selection: 53
Vinay Udyawer
Metrics
H-Index
i10 Index
Citation Counts
19
31
1,555
Spatial Ecology
Conservation Biology
Fisheries
Rankings
Ranking Based On Selection: 54
Luke Thomas
Metrics
H-Index
i10 Index
Citation Counts
19
24
1,166
molecular ecology
conservation genetics
coral reefs
Rankings
Ranking Based On Selection: 55
Cathie Page
Metrics
H-Index
i10 Index
Citation Counts
19
23
2,978
Coral biology
coral ecology
reef restoration
coral disease
Rankings
Ranking Based On Selection: 56
Sara Bell
Metrics
H-Index
i10 Index
Citation Counts
19
23
1,952
Rankings
Ranking Based On Selection: 57
Muhammad Azmi Abdul Wahab
Metrics
H-Index
i10 Index
Citation Counts
18
25
772
Rankings
Ranking Based On Selection: 58
Tane Sinclair-Taylor
Metrics
H-Index
i10 Index
Citation Counts
18
24
1,256
Rankings
Ranking Based On Selection: 59
Rohan M Brooker
Metrics
H-Index
i10 Index
Citation Counts
16
25
778
Animal Behaviour
Sensory Ecology
Coral Reefs
Rankings
Ranking Based On Selection: 60
Katherine Cure
Metrics
H-Index
i10 Index
Citation Counts
15
18
2,216
Marine Ecology
Reef Fish Biogeography and Evolution
Invasive Species
Science Communication
Management
Rankings
Ranking Based On Selection: 61
Patrick Laffy
Metrics
H-Index
i10 Index
Citation Counts
15
18
1,093
Rankings
Ranking Based On Selection: 62
Darren J Koppel
Metrics
H-Index
i10 Index
Citation Counts
15
17
468
Ecotoxicology
Environmental Chemistry
Metals
Pollution
Contamination
Rankings
Ranking Based On Selection: 63
Jim Underwood
Metrics
H-Index
i10 Index
Citation Counts
15
16
1,209
population genetics
restoration
Indigenous partnerships
Rankings
Ranking Based On Selection: 64
Brett K. Baillie
Metrics
H-Index
i10 Index
Citation Counts
15
17
1,298
Rankings
Ranking Based On Selection: 65
David J Hughes
Metrics
H-Index
i10 Index
Citation Counts
14
20
767
Marine Biology
Coral Ecophysiology
Biological Oceanography
Chl-a Fluorescence
Photosynthesis
Rankings
Ranking Based On Selection: 66
Michelle Jonker
Metrics
H-Index
i10 Index
Citation Counts
14
14
1,298
juvenile corals
coral reefs
reef recovery
crustose coralline algae
sea birds
Rankings
Ranking Based On Selection: 67
Virginie Van Dongen-Vogels
Metrics
H-Index
i10 Index
Citation Counts
14
14
953
oceanography
bio-physical interaction
ecology
environmental sciences
satellite remote sensing
Rankings
Ranking Based On Selection: 68
Scott Bainbridge
Metrics
H-Index
i10 Index
Citation Counts
14
16
632
coral reefs sensor networks
Rankings
Ranking Based On Selection: 69
Libby Evans-Illidge
Metrics
H-Index
i10 Index
Citation Counts
14
15
673
Indigenous science partnerships
Marine policy
Sponges
Chemical Ecology
Marine Biotechnology
Rankings
Ranking Based On Selection: 70
Matthew Birt
Metrics
H-Index
i10 Index
Citation Counts
13
15
774
Rankings
Ranking Based On Selection: 71
Renee Gruber
Metrics
H-Index
i10 Index
Citation Counts
13
14
760
Physical-biological interactions
Coastal biogeochemistry
Fluid dynamics
Water quality
Rankings
Ranking Based On Selection: 72
Bozena Wojtasiewicz
Metrics
H-Index
i10 Index
Citation Counts
12
13
482
Ocean Optics
Ocean Colour Remote Sensing
Phytoplankton
Primary Production
Rankings
Ranking Based On Selection: 73
Deepa Varkey
Metrics
H-Index
i10 Index
Citation Counts
12
12
393
Molecular Biology
Microbial Genomics
Microbial Ecology
Fluorometry
Microalgae
Rankings
Ranking Based On Selection: 74
Hemerson Tonin
Metrics
H-Index
i10 Index
Citation Counts
12
15
472
Rankings
Ranking Based On Selection: 75
Ashly Mcmahon
Metrics
H-Index
i10 Index
Citation Counts
11
13
690
Rankings
Ranking Based On Selection: 76
Joost Van Dam
Metrics
H-Index
i10 Index
Citation Counts
11
12
510
Toxicology
Marine Ecology
Rankings
Ranking Based On Selection: 77
Ecology
ancient DNA
population dynamics coral reef ecology
Rankings
Ranking Based On Selection: 79
Marcus Stowar
Metrics
H-Index
i10 Index
Citation Counts
10
12
503
Rankings
Ranking Based On Selection: 80
Phillipa Wilson
Metrics
H-Index
i10 Index
Citation Counts
10
11
309
animal movement
marine turtles
fish ecology
management and conservation of threatened species
Rankings
Ranking Based On Selection: 82
Yong Kit Samuel Chan
Metrics
H-Index
i10 Index
Citation Counts
7
7
409
Coral reefs
Community ecology
Historical ecology
Rankings
Ranking Based On Selection: 83
Mikaela Nordborg
Metrics
H-Index
i10 Index
Citation Counts
7
7
321
Marine Ecotoxicology
Coral Reefs
Reef Restoration
Petroleum Oil
Ultraviolet Light
Rankings
Ranking Based On Selection: 84
Paul Rigby
Metrics
H-Index
i10 Index
Citation Counts
7
7
346
Field Robotics
Machine Learning
Marine Technology
Rankings
Ranking Based On Selection: 85
Felicity Kuek
Metrics
H-Index
i10 Index
Citation Counts
6
4
131
Rankings
Ranking Based On Selection: 86
Jon Kok
Metrics
H-Index
i10 Index
Citation Counts
5
5
192
Rankings
Ranking Based On Selection: 87
Simon Harries
Metrics
H-Index
i10 Index
Citation Counts
5
4
239
Rankings
Ranking Based On Selection: 88
Christopher A Brunner
Metrics
H-Index
i10 Index
Citation Counts
4
3
104
Coral Reproduction
Climate Change
Ocean Acidification
Sediments
Ecotoxicology
Rankings
Ranking Based On Selection: 89
Josephine Jv Nielsen
Metrics
H-Index
i10 Index
Citation Counts
3
3
77
Physiology
climate change
adaptation
resilience
coral
Rankings
Ranking Based On Selection: 90
Jordi Ryall
Metrics
H-Index
i10 Index
Citation Counts
3
2
66
aquatic ecology
ecotoxicology
larval research
Rankings
Ranking Based On Selection: 91
Nadine M Boulotte
Metrics
H-Index
i10 Index
Citation Counts
2
2
257
Symbiosis
Coral reproduction and biology
Coral reefs restoration
Lipidomics
Metabarcoding
Rankings
Ranking Based On Selection: 92
Karina Shechtman
Metrics
H-Index
i10 Index
Citation Counts
1
1
62
Coral disease
coral ecology at the GBR
Red Sea and Mediterranean Sea