Citation Rankings
Highly Cited Researchers
North America Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection :1
Fisheries
marine ecosystems
conservation biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
153,276
55,765
0.364
* Total Citation Counts Rankings
Ranking Based On Selection :2
soil
soil science
soil carbon
soil organic matter
soil organic carbon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
119,893
64,271
0.536
* Total Citation Counts Rankings
Ranking Based On Selection :3
Plant genomics
Bioinformatics
Genomics
Genome biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
113,734
45,668
0.402
* Total Citation Counts Rankings
Ranking Based On Selection :4
Plant Biology
Plant-Microbe Interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
105,455
39,374
0.373
* Total Citation Counts Rankings
Ranking Based On Selection :5
Plant biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
103,850
28,637
0.276
* Total Citation Counts Rankings
Ranking Based On Selection :6
irrigation
evapotranspiration
remote sensing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,480
41,592
0.414
* Total Citation Counts Rankings
Ranking Based On Selection :7
mycology
fungal ecology
ecology
systematics
mycorrhizae
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
95,406
37,647
0.395
* Total Citation Counts Rankings
Ranking Based On Selection :8
tomato breeding
horticulture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
93,792
34,486
0.368
* Total Citation Counts Rankings
Ranking Based On Selection :9
Plant Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,759
18,186
0.200
* Total Citation Counts Rankings
Ranking Based On Selection :10
Water Resources
Water Quality
Watershed Modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,290
38,154
0.423
* Total Citation Counts Rankings
Ranking Based On Selection :11
plant growth
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,189
24,808
0.275
* Total Citation Counts Rankings
Ranking Based On Selection :12
Plant genetics
plant breeding
plant genomics
comparative genomics
plant evolution
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,916
32,836
0.369
* Total Citation Counts Rankings
Ranking Based On Selection :13
plant physiology
photosynthesis
biosphere-atmosphere interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80,149
26,330
0.329
* Total Citation Counts Rankings
Ranking Based On Selection :14
Aquatic microbial ecology
limnology
estuarine and coastal ecology and biogeochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78,647
34,877
0.443
* Total Citation Counts Rankings
Ranking Based On Selection :15
Plant science
RNA biology
small RNA
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,638
16,639
0.220
* Total Citation Counts Rankings
Ranking Based On Selection :16
Plant Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,135
26,192
0.358
* Total Citation Counts Rankings
Ranking Based On Selection :17
Fisheries
Fish Ecology
Conservation Science
Conservation Physiology
Freshwater Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70,375
43,635
0.620
* Total Citation Counts Rankings
Ranking Based On Selection :18
Forest and agricultural ecosystems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,527
12,198
0.175
* Total Citation Counts Rankings
Ranking Based On Selection :19
soil biogeochemistry
land use and greenhouse gas emissions
soil health
biofuel sustainability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,089
27,585
0.405
* Total Citation Counts Rankings
Ranking Based On Selection :20
Probiotics
vaginal and urinary health
Lactobacillus
pesticides
honey bees
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
67,844
35,327
0.521
* Total Citation Counts Rankings
Ranking Based On Selection :21
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
67,416
16,963
0.252
* Total Citation Counts Rankings
Ranking Based On Selection :22
Plant Collections
Systematics
Taxonomy
Lichens
Biodiversity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66,505
28,859
0.434
* Total Citation Counts Rankings
Ranking Based On Selection :23
strategies to improve livestock (beef) production
reduce its effects on the environment
and enhance on-farm food safety.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65,168
29,559
0.454
* Total Citation Counts Rankings
Ranking Based On Selection :24
animal science
palaeoecology
statistics
community ecology
freshwater ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,003
42,824
0.669
* Total Citation Counts Rankings
Ranking Based On Selection :25
Fisheries
conservation
population dynamics
ecosystem modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,714
14,159
0.226
* Total Citation Counts Rankings
Rankings
1,363
53
3
Ranking Based On Selection: 1
Daniel Pauly
University of British Columbia
Vancouver, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
153,276
55,765
0.364
Fisheries
marine ecosystems
conservation biology
* Total Citation Counts Rankings
Rankings
2,178
1,015
12
Ranking Based On Selection: 2
Johannes Lehmann
Cornell University
Ithaca, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
119,893
64,271
0.536
soil
soil science
soil carbon
soil organic matter
soil organic carbon
* Total Citation Counts Rankings
Rankings
2,414
1,148
2
Ranking Based On Selection: 3
Jeremy Schmutz
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
113,734
45,668
0.402
Plant genomics
Bioinformatics
Genomics
Genome biology
* Total Citation Counts Rankings
Rankings
2,813
1,339
16
Ranking Based On Selection: 4
Jeff Dangl
University of North Carolina Chapel Hill
Chapel Hill, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
105,455
39,374
0.373
Plant Biology
Plant-Microbe Interactions
* Total Citation Counts Rankings
Rankings
2,909
1,393
1
Ranking Based On Selection: 5
Richard Dixon
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
103,850
28,637
0.276
* Total Citation Counts Rankings
Rankings
3,078
1,478
1
Ranking Based On Selection: 6
Richard Allen
University of Idaho
Moscow, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
100,480
41,592
0.414
irrigation
evapotranspiration
remote sensing
* Total Citation Counts Rankings
Rankings
3,418
1,635
48
Ranking Based On Selection: 7
Bruns Thomas D
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
95,406
37,647
0.395
mycology
fungal ecology
ecology
systematics
mycorrhizae
* Total Citation Counts Rankings
Rankings
3,543
1,682
15
Ranking Based On Selection: 8
John W Scott
University of Florida
Gainesville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
93,792
34,486
0.368
* Total Citation Counts Rankings
Rankings
3,751
1,785
7
Ranking Based On Selection: 9
Chua NH
Rockefeller University
New York City, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,759
18,186
0.200
* Total Citation Counts Rankings
Rankings
3,785
1,802
2
Ranking Based On Selection: 10
Jeffrey G Arnold
US Department of Agriculture
Washington, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,290
38,154
0.423
Water Resources
Water Quality
Watershed Modeling
* Total Citation Counts Rankings
Rankings
3,795
1,810
7
Ranking Based On Selection: 11
Joanne Chory
Salk Institute
San Diego, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,189
24,808
0.275
* Total Citation Counts Rankings
Rankings
3,892
1,861
2
Ranking Based On Selection: 12
Andrew H Paterson
University of Georgia
Athens, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
88,916
32,836
0.369
Plant genetics
plant breeding
plant genomics
comparative genomics
plant evolution
* Total Citation Counts Rankings
Rankings
4,629
2,206
1
Ranking Based On Selection: 13
Joe Berry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
80,149
26,330
0.329
plant physiology
photosynthesis
biosphere-atmosphere interactions
* Total Citation Counts Rankings
Rankings
4,793
2,281
31
Ranking Based On Selection: 14
Hans W Paerl
University of North Carolina Chapel Hill
Chapel Hill, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
78,647
34,877
0.443
Aquatic microbial ecology
limnology
estuarine and coastal ecology and biogeochemistry
* Total Citation Counts Rankings
Rankings
5,144
2,439
1
Ranking Based On Selection: 15
James C Carrington
Donald Danforth Plant Science Center
Creve Coeur, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
75,638
16,639
0.220
Plant science
RNA biology
small RNA
* Total Citation Counts Rankings
Rankings
5,424
2,573
16
Ranking Based On Selection: 16
Stephen Long
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
73,135
26,192
0.358
* Total Citation Counts Rankings
Rankings
5,752
225
7
Ranking Based On Selection: 17
Steven J Cooke
Carleton University
Ottawa, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
70,375
43,635
0.620
Fisheries
Fish Ecology
Conservation Science
Conservation Physiology
Freshwater Ecology
* Total Citation Counts Rankings
Rankings
5,887
2,790
4
Ranking Based On Selection: 18
John Aber
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
69,527
12,198
0.175
* Total Citation Counts Rankings
Rankings
6,083
2,887
8
Ranking Based On Selection: 19
Keith Paustian
Colorado State University
Fort Collins, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
68,089
27,585
0.405
soil biogeochemistry
land use and greenhouse gas emissions
soil health
biofuel sustainability
* Total Citation Counts Rankings
Rankings
6,117
238
7
Ranking Based On Selection: 20
Gregor Reid
Western University Canada
London, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
67,844
35,327
0.521
Probiotics
vaginal and urinary health
Lactobacillus
pesticides
honey bees
* Total Citation Counts Rankings
Rankings
6,188
2,932
1
Ranking Based On Selection: 21
Andrew Sharpley
University of Arkansas Fayetteville
Fayetteville, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
67,416
16,963
0.252
* Total Citation Counts Rankings
Rankings
6,322
2,994
19
Ranking Based On Selection: 22
Msu Herbarium
Michigan State University
East Lansing, United States
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
66,505
28,859
0.434
Plant Collections
Systematics
Taxonomy
Lichens
Biodiversity
* Total Citation Counts Rankings
Rankings
6,517
249
1
Ranking Based On Selection: 23
Tim A Mcallister
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
65,168
29,559
0.454
strategies to improve livestock (beef) production
reduce its effects on the environment
and enhance on-farm food safety.
* Total Citation Counts Rankings
Rankings
6,726
256
1
Ranking Based On Selection: 24
Gavin L Simpson
University of Regina
Regina, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,003
42,824
0.669
animal science
palaeoecology
statistics
community ecology
freshwater ecology
* Total Citation Counts Rankings
Rankings
6,949
261
31
Ranking Based On Selection: 25
Carl Walters
University of British Columbia
Vancouver, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
62,714
14,159
0.226
Fisheries
conservation
population dynamics
ecosystem modelling