North America Scientist and University Rankings 2025
North America Agriculture & Forestry 9.317 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 31, 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: 1
Plant Biology
Metrics
H-Index
i10 Index
Citation Counts
168
487
91,408
* Total H IndexRankings
Ranking Based On Selection: 2
Fisheries
marine ecosystems
conservation biology
Metrics
H-Index
i10 Index
Citation Counts
165
783
155,341
* Total H IndexRankings
Ranking Based On Selection: 3
Plant biology
Metrics
H-Index
i10 Index
Citation Counts
155
501
104,881
* Total H IndexRankings
Ranking Based On Selection: 4
plant growth
Metrics
H-Index
i10 Index
Citation Counts
147
299
91,114
* Total H IndexRankings
Ranking Based On Selection: 5
Plant Biology
Plant-Microbe Interactions
Metrics
H-Index
i10 Index
Citation Counts
139
246
106,856
* Total H IndexRankings
Ranking Based On Selection: 6
Plant genetics
plant breeding
plant genomics
comparative genomics
plant evolution
Metrics
H-Index
i10 Index
Citation Counts
139
438
90,209
* Total H IndexRankings
Ranking Based On Selection: 7
soil
soil science
soil organic matter
soil health
soil organic carbon
Metrics
H-Index
i10 Index
Citation Counts
137
383
122,805
* Total H IndexRankings
Ranking Based On Selection: 8
Metrics
H-Index
i10 Index
Citation Counts
134
406
67,973
* Total H IndexRankings
Ranking Based On Selection: 9
Aquatic microbial ecology
limnology
estuarine and coastal ecology and biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
133
462
80,165
* Total H IndexRankings
Ranking Based On Selection: 10
Fisheries
Fish Ecology
Conservation Science
Conservation Physiology
Freshwater Ecology
Metrics
H-Index
i10 Index
Citation Counts
130
924
72,350
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* Total H IndexRankings
Ranking Based On Selection: 11
Probiotics
vaginal and urinary health
Lactobacillus
pesticides
honey bees
Metrics
H-Index
i10 Index
Citation Counts
129
456
69,385
* Total H IndexRankings
Ranking Based On Selection: 12
Plant Science
Metrics
H-Index
i10 Index
Citation Counts
129
354
74,196
* Total H IndexRankings
Ranking Based On Selection: 13
plant physiology
photosynthesis
biosphere-atmosphere interactions
Metrics
H-Index
i10 Index
Citation Counts
125
333
81,312
* Total H IndexRankings
Ranking Based On Selection: 14
Biogeochemistry
Metrics
H-Index
i10 Index
Citation Counts
123
390
59,268
* Total H IndexRankings
Ranking Based On Selection: 15
Animal Physiology
Environmental Toxicology
Comparative Physiology
Metrics
H-Index
i10 Index
Citation Counts
122
747
58,942
* Total H IndexRankings
Ranking Based On Selection: 16
strategies to improve livestock (beef) production
reduce its effects on the environment
and enhance on-farm food safety.
Metrics
H-Index
i10 Index
Citation Counts
121
805
66,352
* Total H IndexRankings
Ranking Based On Selection: 17
plant genetics
rice (Oryza sativa)
evolution
plant genomics
population biology
Metrics
H-Index
i10 Index
Citation Counts
121
268
63,306
* Total H IndexRankings
Ranking Based On Selection: 18
Plant science
RNA biology
small RNA
Metrics
H-Index
i10 Index
Citation Counts
119
180
76,134
* Total H IndexRankings
Ranking Based On Selection: 19
plant ecophysiology
Metrics
H-Index
i10 Index
Citation Counts
118
274
37,178
* Total H IndexRankings
Ranking Based On Selection: 20
Animal Welfare
Applied Animal Behaviour
Dairy
Metrics
H-Index
i10 Index
Citation Counts
117
393
44,002
* Total H IndexRankings
Ranking Based On Selection: 21
Wheat
Genetics
Development Disease resistance
Metrics
H-Index
i10 Index
Citation Counts
117
278
48,357
* Total H IndexRankings
Ranking Based On Selection: 22
Aquaporins
Malaria
Human Rights
Science Diplomacy
Metrics
H-Index
i10 Index
Citation Counts
117
222
56,727
* Total H IndexRankings
Ranking Based On Selection: 23
Forest and agricultural ecosystems
Metrics
H-Index
i10 Index
Citation Counts
116
205
69,954
* Total H IndexRankings
Ranking Based On Selection: 24
Plant Collections
Systematics
Taxonomy
Lichens
Biodiversity
Metrics
H-Index
i10 Index
Citation Counts
115
1,151
68,411
* Total H IndexRankings
Ranking Based On Selection: 25
plants evolution phylogeny biogeography
Metrics
H-Index
i10 Index
Citation Counts
115
264
60,929
Chua NH
Rockefeller University
New York, United States
Metrics
H-Index
i10-Index
Citation Counts
168
487
91,408
Daniel Pauly
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
165
783
155,341
Fisheries
marine ecosystems
conservation biology
Richard Dixon
Metrics
H-Index
i10-Index
Citation Counts
155
501
104,881
Joanne Chory
Salk Institute
San Diego, United States
Metrics
H-Index
i10-Index
Citation Counts
147
299
91,114
Jeff Dangl
University of North Carolina Chapel Hill
Chapel Hill, United States
Metrics
H-Index
i10-Index
Citation Counts
139
246
106,856
Plant Biology
Plant-Microbe Interactions
Andrew H Paterson
University of Georgia
Athens, United States
Metrics
H-Index
i10-Index
Citation Counts
139
438
90,209
Plant genetics
plant breeding
plant genomics
comparative genomics
plant evolution
Johannes Lehmann
Cornell University
Ithaca, United States
Metrics
H-Index
i10-Index
Citation Counts
137
383
122,805
soil
soil science
soil organic matter
soil health
soil organic carbon
Andrew Sharpley
University of Arkansas Fayetteville
Fayetteville, United States
Metrics
H-Index
i10-Index
Citation Counts
134
406
67,973
Hans W Paerl
University of North Carolina Chapel Hill
Chapel Hill, United States
Metrics
H-Index
i10-Index
Citation Counts
133
462
80,165
Aquatic microbial ecology
limnology
estuarine and coastal ecology and biogeochemistry
Steven J Cooke
Carleton University
Ottawa, Canada
Metrics
H-Index
i10-Index
Citation Counts
130
924
72,350
Fisheries
Fish Ecology
Conservation Science
Conservation Physiology
Freshwater Ecology
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!
Gregor Reid
Western University Canada
London, Canada
Metrics
H-Index
i10-Index
Citation Counts
129
456
69,385
Probiotics
vaginal and urinary health
Lactobacillus
pesticides
honey bees
Stephen Long
Metrics
H-Index
i10-Index
Citation Counts
129
354
74,196
Joe Berry
Carnegie Institution for Science
Washington, United States
Metrics
H-Index
i10-Index
Citation Counts
125
333
81,312
plant physiology
photosynthesis
biosphere-atmosphere interactions
Donald Sparks
University of Delaware
Newark, United States
Metrics
H-Index
i10-Index
Citation Counts
123
390
59,268
Chris M Wood
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
122
747
58,942
Animal Physiology
Environmental Toxicology
Comparative Physiology
Tim A Mcallister
Metrics
H-Index
i10-Index
Citation Counts
121
805
66,352
strategies to improve livestock (beef) production
reduce its effects on the environment
and enhance on-farm food safety.
S McCouch
Cornell University
Ithaca, United States
Metrics
H-Index
i10-Index
Citation Counts
121
268
63,306
plant genetics
rice (Oryza sativa)
evolution
plant genomics
population biology
James C Carrington
Donald Danforth Plant Science Center
Creve Coeur, United States
Metrics
H-Index
i10-Index
Citation Counts
119
180
76,134
Plant science
RNA biology
small RNA
Frederick C Meinzer
Oregon State University
Corvallis, United States
Metrics
H-Index
i10-Index
Citation Counts
118
274
37,178
Daniel M Weary
University of British Columbia
Vancouver, Canada
Metrics
H-Index
i10-Index
Citation Counts
117
393
44,002
Animal Welfare
Applied Animal Behaviour
Dairy
Jorge Dubcovsky
Metrics
H-Index
i10-Index
Citation Counts
117
278
48,357
Wheat
Genetics
Development Disease resistance
Peter Agre
Johns Hopkins University
Baltimore, United States
Metrics
H-Index
i10-Index
Citation Counts
117
222
56,727
Aquaporins
Malaria
Human Rights
Science Diplomacy
John Aber
Metrics
H-Index
i10-Index
Citation Counts
116
205
69,954
Msu Herbarium
Michigan State University
East Lansing, United States
Metrics
H-Index
i10-Index
Citation Counts
115
1,151
68,411
Plant Collections
Systematics
Taxonomy
Lichens
Biodiversity
Michael Donoghue
Yale University
New Haven, United States
Metrics
H-Index
i10-Index
Citation Counts
115
264
60,929
plants evolution phylogeny biogeography