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" (873,937 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 :1
Richard D. Gregory
Biodiversity
Conservation Biology
Biodiversity Indicators
Applied Conservation
Metrics
H-Index
i10 Index
Citation
82
197
33,792
* Rankings
Ranking Based On Selection :2
Jeremy D Wilson
Conservation Science
Ornithology
Conservation
Agroecology
Biodiversity
Metrics
H-Index
i10 Index
Citation
56
115
20,824
* Rankings
Ranking Based On Selection :4
David W. Gibbons
Conservation Biology
Ecology
Behavioural Ecology
Animal Behaviour
Ornithology
Metrics
H-Index
i10 Index
Citation
49
76
17,487
* Rankings
Ranking Based On Selection :6
Steffen Oppel
Ornithology
Population Ecology
Conservation Biology
Ecology
Telemetry
Metrics
H-Index
i10 Index
Citation
42
98
6,504
* Rankings
Ranking Based On Selection :8
Felicity Edwards
Conservation Biology
Logging
Dung beetles
Functional Ecology
Metrics
H-Index
i10 Index
Citation
26
32
5,125
* Rankings
Ranking Based On Selection :11
Rob H Field
Agro-ecology
Land-use change
Climate change mitigation
Metrics
H-Index
i10 Index
Citation
22
33
2,321
* Rankings
Ranking Based On Selection :15
Mark H. Hancock
Peatlands
Forest ecology
Freshwater ecology
Fire ecology
Ornithology
Metrics
H-Index
i10 Index
Citation
20
28
1,229
* Rankings
Ranking Based On Selection :19
Antje Steinfurth
Conservation Biology
Marine Ecology
Marine Protected Areas
Population Dynamics
Metrics
H-Index
i10 Index
Citation
14
17
899
* Rankings
Ranking Based On Selection :24
Tom J Evans
Movement Ecology
seabirds
marine ecology
behavioural ecology
wildlife management
Metrics
H-Index
i10 Index
Citation
11
11
428
* Rankings
Ranking Based On Selection :25
Penny Gardner
Conservation
Tropical Forest Ecology
Scientific Research
Metrics
H-Index
i10 Index
Citation
10
12
464
* Rankings
Ranking Based On Selection :26
Lucy R Mason|Lucy R Malpas
Wader conservation
predation
saltmarsh research
gamebirds
Scotland's rainforest
Metrics
H-Index
i10 Index
Citation
10
10
645
* Rankings
Ranking Based On Selection :28
Adrian Hughes
conservation
geographical information systems
Metrics
H-Index
i10 Index
Citation
9
9
2,060
Constance Tremlett
conservation science
species interactions
ecosystem services
seabirds
Metrics
H-Index
i10 Index
Citation
6
5
330
Fraser Bell
Conservation Biology
Ornithology
Ecology
Migratory species
Metrics
H-Index
i10 Index
Citation
5
4
433
Kirsty A Franklin
seabirds
tracking
migration
citizen science
Metrics
H-Index
i10 Index
Citation
5
4
100
Zoe Deakin
seabird ecology
conservation
census techniques
foraging
animal movement
Metrics
H-Index
i10 Index
Citation
5
3
110
Christina L. Hunt
Fish ecology
Lionfish
Tropical marine ecology
Invasive species
Metrics
H-Index
i10 Index
Citation
4
4
121
Simone Mordue
Conservation Ecology
Movement Ecology
Sustainable development
Biology
Animal Behaviour
Metrics
H-Index
i10 Index
Citation
3
2
30
Rankings
Ranking Based On Selection: 1
Richard D. Gregory
Metrics
H-Index
i10 Index
Citation Counts
82
197
33,792
Biodiversity
Conservation Biology
Biodiversity Indicators
Applied Conservation
Rankings
Ranking Based On Selection: 2
Jeremy D Wilson
Metrics
H-Index
i10 Index
Citation Counts
56
115
20,824
Conservation Science
Ornithology
Conservation
Agroecology
Biodiversity
Rankings
Ranking Based On Selection: 3
Richard Bradbury
Metrics
H-Index
i10 Index
Citation Counts
54
107
12,852
Rankings
Ranking Based On Selection: 4
David W. Gibbons
Metrics
H-Index
i10 Index
Citation Counts
49
76
17,487
Conservation Biology
Ecology
Behavioural Ecology
Animal Behaviour
Ornithology
Rankings
Ranking Based On Selection: 5
Mark Bolton
Metrics
H-Index
i10 Index
Citation Counts
43
98
6,239
Rankings
Ranking Based On Selection: 6
Steffen Oppel
Metrics
H-Index
i10 Index
Citation Counts
42
98
6,504
Ornithology
Population Ecology
Conservation Biology
Ecology
Telemetry
Rankings
Ranking Based On Selection: 7
Paul Bellamy
Metrics
H-Index
i10 Index
Citation Counts
40
67
5,090
Rankings
Ranking Based On Selection: 8
Felicity Edwards
Metrics
H-Index
i10 Index
Citation Counts
26
32
5,125
Conservation Biology
Logging
Dung beetles
Functional Ecology
Rankings
Ranking Based On Selection: 9
Ian Cleasby
Metrics
H-Index
i10 Index
Citation Counts
22
29
2,128
Rankings
Ranking Based On Selection: 10
Jennifer Smart
Metrics
H-Index
i10 Index
Citation Counts
22
36
1,528
Conservation
Ornithology
Science communication
Rankings
Ranking Based On Selection: 11
Rob H Field
Metrics
H-Index
i10 Index
Citation Counts
22
33
2,321
Agro-ecology
Land-use change
Climate change mitigation
Rankings
Ranking Based On Selection: 12
Kendrew Colhoun
Metrics
H-Index
i10 Index
Citation Counts
22
36
2,535
Rankings
Ranking Based On Selection: 13
David Jt Douglas
Metrics
H-Index
i10 Index
Citation Counts
21
31
1,381
Rankings
Ranking Based On Selection: 14
John Mallord
Metrics
H-Index
i10 Index
Citation Counts
20
31
1,263
Rankings
Ranking Based On Selection: 15
Mark H. Hancock
Metrics
H-Index
i10 Index
Citation Counts
20
28
1,229
Peatlands
Forest ecology
Freshwater ecology
Fire ecology
Ornithology
Rankings
Ranking Based On Selection: 16
Ellie Owen
Metrics
H-Index
i10 Index
Citation Counts
19
26
1,198
Rankings
Ranking Based On Selection: 17
Gillian Gilbert
Metrics
H-Index
i10 Index
Citation Counts
17
22
1,644
conservation
ecology
ornithology
wetland
habitat
Rankings
Ranking Based On Selection: 18
Alison E Beresford
Metrics
H-Index
i10 Index
Citation Counts
16
18
931
Rankings
Ranking Based On Selection: 19
Antje Steinfurth
Metrics
H-Index
i10 Index
Citation Counts
14
17
899
Conservation Biology
Marine Ecology
Marine Protected Areas
Population Dynamics
Rankings
Ranking Based On Selection: 20
Lucy Wright
Metrics
H-Index
i10 Index
Citation Counts
14
15
894
Rankings
Ranking Based On Selection: 21
Jessica V Bryant
Metrics
H-Index
i10 Index
Citation Counts
13
16
776
Rankings
Ranking Based On Selection: 22
Andrew Stanbury
Metrics
H-Index
i10 Index
Citation Counts
12
18
767
Rankings
Ranking Based On Selection: 23
Susana Requena Moreno
Metrics
H-Index
i10 Index
Citation Counts
11
12
483
Conservation Biology
Spatial Analysis
GIS
MSP
Rankings
Ranking Based On Selection: 24
Tom J Evans
Metrics
H-Index
i10 Index
Citation Counts
11
11
428
Movement Ecology
seabirds
marine ecology
behavioural ecology
wildlife management
Rankings
Ranking Based On Selection: 25
Penny Gardner
Metrics
H-Index
i10 Index
Citation Counts
10
12
464
Conservation
Tropical Forest Ecology
Scientific Research
Rankings
Ranking Based On Selection: 26
Lucy R Mason|Lucy R Malpas
Metrics
H-Index
i10 Index
Citation Counts
10
10
645
Wader conservation
predation
saltmarsh research
gamebirds
Scotland's rainforest
Rankings
Ranking Based On Selection: 27
Derek Gruar
Metrics
H-Index
i10 Index
Citation Counts
10
11
396
Rankings
Ranking Based On Selection: 28
Adrian Hughes
Metrics
H-Index
i10 Index
Citation Counts
9
9
2,060
conservation
geographical information systems
Rankings
Ranking Based On Selection: 29
Jude Lane
Metrics
H-Index
i10 Index
Citation Counts
9
9
478
Rankings
Ranking Based On Selection: 30
Derren Fox
Metrics
H-Index
i10 Index
Citation Counts
9
9
406
Rankings
Ranking Based On Selection: 31
Saskia Wischnewski
Metrics
H-Index
i10 Index
Citation Counts
7
7
294
Seabird Ecology
Marine Conservation
Spatial Ecology
Rankings
Ranking Based On Selection: 32
Melissa Minter
Metrics
H-Index
i10 Index
Citation Counts
6
6
297
Rankings
Ranking Based On Selection: 33
Thomas Churchyard
Metrics
H-Index
i10 Index
Citation Counts
6
4
126
Rankings
Ranking Based On Selection: 34
Constance Tremlett
Metrics
H-Index
i10 Index
Citation Counts
6
5
330
conservation science
species interactions
ecosystem services
seabirds
Rankings
Ranking Based On Selection: 35
Fraser Bell
Metrics
H-Index
i10 Index
Citation Counts
5
4
433
Conservation Biology
Ornithology
Ecology
Migratory species
Rankings
Ranking Based On Selection: 36
Kirsty A Franklin
Metrics
H-Index
i10 Index
Citation Counts
5
4
100
seabirds
tracking
migration
citizen science
Rankings
Ranking Based On Selection: 37
Zoe Deakin
Metrics
H-Index
i10 Index
Citation Counts
5
3
110
seabird ecology
conservation
census techniques
foraging
animal movement
Rankings
Ranking Based On Selection: 38
Christina L. Hunt
Metrics
H-Index
i10 Index
Citation Counts
4
4
121
Fish ecology
Lionfish
Tropical marine ecology
Invasive species
Rankings
Ranking Based On Selection: 39
Simone Mordue
Metrics
H-Index
i10 Index
Citation Counts
3
2
30
Conservation Ecology
Movement Ecology
Sustainable development
Biology
Animal Behaviour
Rankings
Ranking Based On Selection: 40
Chris Batey
Metrics
H-Index
i10 Index
Citation Counts
1
0
3
Conservation Science
Ornithology