University, Subject, Country, Region, World
World 7.216 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 30, 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 (873.690) 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: 26
aquatic ecology
freshwater ecology
marine ecology
invasive species
biological invasions
Metrics
H-Index
i10 Index
Citation Counts
83
321
24,686
* Total H IndexRankings
Ranking Based On Selection: 27
fisheries
otolith
shark
Metrics
H-Index
i10 Index
Citation Counts
82
195
32,532
* Total H IndexRankings
Ranking Based On Selection: 28
Marine Science
Automated monitoring
Metrics
H-Index
i10 Index
Citation Counts
81
277
22,482
* Total H IndexRankings
Ranking Based On Selection: 29
Marine Ecology
biotelemetry
foraging
demography
ecological modelling
Metrics
H-Index
i10 Index
Citation Counts
81
316
22,503
* Total H IndexRankings
Ranking Based On Selection: 30
Marine Chemistry
Nutrients and carbon cycle
Ocean acidification
Global change
Metrics
H-Index
i10 Index
Citation Counts
81
311
24,769
* Total H IndexRankings
Ranking Based On Selection: 31
Fisheries
Marine Ecology
Marine Biology
Conservation Biology
Aquaculture
Metrics
H-Index
i10 Index
Citation Counts
81
229
25,895
* Total H IndexRankings
Ranking Based On Selection: 32
aquaculture
Metrics
H-Index
i10 Index
Citation Counts
80
277
25,774
* Total H IndexRankings
Ranking Based On Selection: 33
Aquaculture and Fisheries
Animal Science
Environmental Science
WEF Nexus
Sustainability
Metrics
H-Index
i10 Index
Citation Counts
79
263
19,598
* Total H IndexRankings
Ranking Based On Selection: 34
Aquatic ecology
evolution
toxicology
behavior
environmental science
Metrics
H-Index
i10 Index
Citation Counts
79
186
23,939
* Total H IndexRankings
Ranking Based On Selection: 35
Aquatic ecology and evolution
protists
biogeography
Metrics
H-Index
i10 Index
Citation Counts
79
293
22,769
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* Total H IndexRankings
Ranking Based On Selection: 36
fish and shellfish immunology
fish and shellfish genomics
fish and shellfish infectious diseases
Metrics
H-Index
i10 Index
Citation Counts
79
341
20,534
* Total H IndexRankings
Ranking Based On Selection: 37
Aquaculture
Immunomodulation
Fish Nutrition
Feed Additives
Prebiotics
Metrics
H-Index
i10 Index
Citation Counts
78
249
19,334
* Total H IndexRankings
Ranking Based On Selection: 38
fisheries
aquaculture
food systems
blue economy
international development
Metrics
H-Index
i10 Index
Citation Counts
77
182
28,601
* Total H IndexRankings
Ranking Based On Selection: 39
Conservation Biology
Wildlife Biology
Endangered Species
Hawaii
Conservation Reliant Species
Metrics
H-Index
i10 Index
Citation Counts
77
264
33,996
* Total H IndexRankings
Ranking Based On Selection: 40
marine mammal life histories
population dynamics
foraging ecology and diet
fisheries interactions
predation
Metrics
H-Index
i10 Index
Citation Counts
77
174
18,215
* Total H IndexRankings
Ranking Based On Selection: 41
Marine Biology
Metrics
H-Index
i10 Index
Citation Counts
76
184
21,534
* Total H IndexRankings
Ranking Based On Selection: 42
Inland Fisheries
fisheries
Metrics
H-Index
i10 Index
Citation Counts
76
259
22,147
* Total H IndexRankings
Ranking Based On Selection: 43
Evolution
Genomics
Ecology
Conservation
Fisheries
Metrics
H-Index
i10 Index
Citation Counts
76
199
19,297
* Total H IndexRankings
Ranking Based On Selection: 44
Marine Biology
Marine Ecology
Fish Ecology
Metrics
H-Index
i10 Index
Citation Counts
74
240
22,485
* Total H IndexRankings
Ranking Based On Selection: 45
fish feeding food marine ecosystem lake ocean ecology
Metrics
H-Index
i10 Index
Citation Counts
74
205
21,754
* Total H IndexRankings
Ranking Based On Selection: 46
Fish Nutrition
aquaculture
Metrics
H-Index
i10 Index
Citation Counts
74
192
17,607
* Total H IndexRankings
Ranking Based On Selection: 47
Aquatic Biogeochemistry
Dissolved Organic Matter
Microplastics
Emerging Contaminants
Metrics
H-Index
i10 Index
Citation Counts
74
190
16,652
* Total H IndexRankings
Ranking Based On Selection: 48
aquatic ecology
stream ecology
wetland ecology
ecosystem restoration
emerging contaminants
Metrics
H-Index
i10 Index
Citation Counts
74
182
20,173
* Total H IndexRankings
Ranking Based On Selection: 49
natural product chemistry
Metrics
H-Index
i10 Index
Citation Counts
74
258
19,592
* Total H IndexRankings
Ranking Based On Selection: 50
Freshwater Fisheries and Toxicology
Metrics
H-Index
i10 Index
Citation Counts
73
482
22,288
Gerard Van Der Velde
Radboud University
Nijmegen, Netherlands
Metrics
H-Index
i10-Index
Citation Counts
83
321
24,686
aquatic ecology
freshwater ecology
marine ecology
invasive species
biological invasions
Steven Campana
University of Iceland
Reykjavík, Iceland
Metrics
H-Index
i10-Index
Citation Counts
82
195
32,532
Rod Connolly
Griffith University
Brisbane, Australia
Metrics
H-Index
i10-Index
Citation Counts
81
277
22,482
Marine Science
Automated monitoring
Mark Hindell
University of Tasmania
Hobart, Australia
Metrics
H-Index
i10-Index
Citation Counts
81
316
22,503
Marine Ecology
biotelemetry
foraging
demography
ecological modelling
Chen Tung Arthur Chen
National Sun Yat Sen University
Kaohsiung City, Taiwan
Metrics
H-Index
i10-Index
Citation Counts
81
311
24,769
Marine Chemistry
Nutrients and carbon cycle
Ocean acidification
Global change
Michel J Kaiser
Heriot-Watt University
Edinburgh, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
81
229
25,895
Fisheries
Marine Ecology
Marine Biology
Conservation Biology
Aquaculture
Peter Bossier
Ghent University
Ghent, Belgium
Metrics
H-Index
i10-Index
Citation Counts
80
277
25,774
Mahmoud Dawood
Kafr El Sheikh University
Kafr el-Sheikh, Egypt
Metrics
H-Index
i10-Index
Citation Counts
79
263
19,598
Aquaculture and Fisheries
Animal Science
Environmental Science
WEF Nexus
Sustainability
Rick Relyea
Metrics
H-Index
i10-Index
Citation Counts
79
186
23,939
Aquatic ecology
evolution
toxicology
behavior
environmental science
Vyverman Wim
Ghent University
Ghent, Belgium
Metrics
H-Index
i10-Index
Citation Counts
79
293
22,769
Aquatic ecology and evolution
protists
biogeography
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Ikuo Hirono
Metrics
H-Index
i10-Index
Citation Counts
79
341
20,534
fish and shellfish immunology
fish and shellfish genomics
fish and shellfish infectious diseases
Seyed Hossein Hoseinifar
Metrics
H-Index
i10-Index
Citation Counts
78
249
19,334
Aquaculture
Immunomodulation
Fish Nutrition
Feed Additives
Prebiotics
fisheries
aquaculture
food systems
blue economy
international development
JM Scott
University of Idaho
Moscow, United States
Metrics
H-Index
i10-Index
Citation Counts
77
264
33,996
Conservation Biology
Wildlife Biology
Endangered Species
Hawaii
Conservation Reliant Species
W Don Bowen
Dalhousie University
Halifax, Canada
Metrics
H-Index
i10-Index
Citation Counts
77
174
18,215
marine mammal life histories
population dynamics
foraging ecology and diet
fisheries interactions
predation
Ivan Nagelkerken
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10-Index
Citation Counts
76
184
21,534
Ian Cowx
Metrics
H-Index
i10-Index
Citation Counts
76
259
22,147
Craig Primmer
University of Helsinki
Helsinki, Finland
Metrics
H-Index
i10-Index
Citation Counts
76
199
19,297
Evolution
Genomics
Ecology
Conservation
Fisheries
Bronwyn May Gillanders
University of Adelaide
Adelaide, Australia
Metrics
H-Index
i10-Index
Citation Counts
74
240
22,485
Marine Biology
Marine Ecology
Fish Ecology
Jason Link
Metrics
H-Index
i10-Index
Citation Counts
74
205
21,754
fish feeding food marine ecosystem lake ocean ecology
Simon Davies
Harper Adams University
Newport, United Kingdom
Metrics
H-Index
i10-Index
Citation Counts
74
192
17,607
Laodong Guo
University of Wisconsin Milwaukee
Milwaukee, United States
Metrics
H-Index
i10-Index
Citation Counts
74
190
16,652
Aquatic Biogeochemistry
Dissolved Organic Matter
Microplastics
Emerging Contaminants
Gary A Lamberti
University of Notre Dame
Notre Dame, United States
Metrics
H-Index
i10-Index
Citation Counts
74
182
20,173
aquatic ecology
stream ecology
wetland ecology
ecosystem restoration
emerging contaminants
Shigeki Matsunaga
University of Tokyo
Tokyo, Japan
Metrics
H-Index
i10-Index
Citation Counts
74
258
19,592
Muhammad Javed
Metrics
H-Index
i10-Index
Citation Counts
73
482
22,288
Freshwater Fisheries and Toxicology