Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Architecture and Design, Business and Management, Economics and Econometrics, Education, Engineering and Technology, History, Philosophy, Theology, Law, Medicine and Health Sciences, Natural Sciences and Social Sciences and their 256 sub-branches is a unique service offered only by “AD Scientific Index”. You can see the most cited and influential researchers in the country and region. See also for more specific citation analyses: "last 6 years citation index" Universities Rankings 2024 (Sort by: Total Citations) and Universities Rankings 2024 (Sort by : Last 6 Years Citations)
![Chelsea M Rochman](https://cdn.adscientificindex.com/pictures/4c/646357.jpg)
marine ecology
ecotoxicology
environmental chemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,113
23,352
0.894
![Sean C Thomas](https://cdn.adscientificindex.com/pictures/9a/642416.jpg)
Forest ecology
Global change biology
Biochar
Plant ecology
Tree physiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,157
13,223
0.470
![Bm Wotton|M Wotton](/user/assets/images/profile/no-profile-photo.png)
forest fire
conservation biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,095
8,184
0.407
![Nicholas E Mandrak](https://cdn.adscientificindex.com/pictures/9a/644488.jpg)
Fishes
Biodiversity
Conservation Biology
Endangered Species
Invasive Species
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,878
7,234
0.562
![Dev Britto](https://cdn.adscientificindex.com/pictures/ea/645099.jpg)
plant physiology
biochemistry
ecology
agronomics
ion transport
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,241
4,814
0.470
![Marney Isaac](https://cdn.adscientificindex.com/pictures/e7/649821.jpg)
agroecology
agroforestry
soil biogeochemistry
plant traits
social-ecological systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,928
4,671
0.788
![Hannah De Frond](/user/assets/images/profile/no-profile-photo.png)
plastic pollution
microplastics
spectroscopy
cleanup technologies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,642
4,631
0.998
* Last 6 Years Citation Counts Rankings
![Adam R Martin](https://cdn.adscientificindex.com/pictures/60/655409.jpg)
Forest ecology
agroecology
global change biology
plant physiology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,462
3,787
0.849
* Last 6 Years Citation Counts Rankings
![Ludovic Hermabessiere](https://cdn.adscientificindex.com/pictures/ec/662632.jpg)
Marine Biology
Microplastic
Seafood product
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,035
3,782
0.937
* Last 6 Years Citation Counts Rankings
![Brian Shuter](https://cdn.adscientificindex.com/pictures/2b/642744.jpg)
Aquatic Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,625
3,544
0.281
* Last 6 Years Citation Counts Rankings
![Jay Malcolm](https://cdn.adscientificindex.com/pictures/1b/643504.jpg)
conservation biology
tropical and temperate ecology
community ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,215
3,403
0.239
* Last 6 Years Citation Counts Rankings
![John Caspersen](/user/assets/images/profile/no-profile-photo.png)
forest ecology
global change biology
forestry
silviculture
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,442
2,887
0.388
* Last 6 Years Citation Counts Rankings
![Shelley Lumba](https://cdn.adscientificindex.com/pictures/89/658561.jpg)
Plant Biology
Systems Biology
Plant-parasite Interactions
Genetics
Hormone Signalling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,814
2,388
0.496
* Last 6 Years Citation Counts Rankings
![Heather E Mcfarlane](https://cdn.adscientificindex.com/pictures/d2/650964.jpg)
plant cell biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,789
2,344
0.619
* Last 6 Years Citation Counts Rankings
![Keiko Yoshioka](/user/assets/images/profile/no-profile-photo.png)
Plant Moleculer Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,168
2,157
0.417
* Last 6 Years Citation Counts Rankings
![John Ratcliffe](https://cdn.adscientificindex.com/pictures/81/647644.jpg)
Animal Behaviour
Echolocation
Neuroethology
Sensory Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,420
2,040
0.462
* Last 6 Years Citation Counts Rankings
![P Kotanen](https://cdn.adscientificindex.com/pictures/b5/646970.jpg)
Plant ecology
herbivory
biological invasions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,746
1,932
0.336
* Last 6 Years Citation Counts Rankings
![Wolfgang Moeder](/user/assets/images/profile/no-profile-photo.png)
Plant Molecular Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,861
1,818
0.374
* Last 6 Years Citation Counts Rankings
![Michael A Phillips](https://cdn.adscientificindex.com/pictures/a1/651544.jpg)
Plant metabolism
terpenoids
plant secondary metabolism
plant biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,949
1,684
0.426
* Last 6 Years Citation Counts Rankings
![Azizur Rahman](https://cdn.adscientificindex.com/pictures/d0/659783.jpg)
Biomineralization/material science
Climate Change/Environmental Sciences
Marine biology
Zoology
Protein biochemistry
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,128
1,382
0.649
* Last 6 Years Citation Counts Rankings
![Patrick Ma James](https://cdn.adscientificindex.com/pictures/b9/653683.jpg)
forest disturbance
spatial ecology
population genetics
biodiversity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,467
1,330
0.539
* Last 6 Years Citation Counts Rankings
![Matthew M Guzzo](https://cdn.adscientificindex.com/pictures/0b/662723.jpg)
Aquatic Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,292
1,130
0.875
* Last 6 Years Citation Counts Rankings
![Kant Shashi](https://cdn.adscientificindex.com/pictures/1b/4778229.jpg)
Management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,094
1,026
0.938
* Last 6 Years Citation Counts Rankings
![Eliana Gonzales Vigil](https://cdn.adscientificindex.com/pictures/7a/659811.jpg)
Plant Biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,589
876
0.551
* Last 6 Years Citation Counts Rankings
![Nigel Gale](https://cdn.adscientificindex.com/pictures/c9/667567.jpg)
Plant Ecology
Physiology
Forest Ecology
Biochar
Cannabis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
999
824
0.825
Chelsea M Rochman
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,113
23,352
0.894
marine ecology
ecotoxicology
environmental chemistry
Sean C Thomas
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,157
13,223
0.470
Forest ecology
Global change biology
Biochar
Plant ecology
Tree physiology
Bm Wotton|M Wotton
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,095
8,184
0.407
Nicholas E Mandrak
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,878
7,234
0.562
Fishes
Biodiversity
Conservation Biology
Endangered Species
Invasive Species
Dev Britto
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,241
4,814
0.470
plant physiology
biochemistry
ecology
agronomics
ion transport
Marney Isaac
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,928
4,671
0.788
agroecology
agroforestry
soil biogeochemistry
plant traits
social-ecological systems
Hannah De Frond
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,642
4,631
0.998
plastic pollution
microplastics
spectroscopy
cleanup technologies
Adam R Martin
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,462
3,787
0.849
Forest ecology
agroecology
global change biology
plant physiology
Ludovic Hermabessiere
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,035
3,782
0.937
Marine Biology
Microplastic
Seafood product
Brian Shuter
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,625
3,544
0.281
Jay Malcolm
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
14,215
3,403
0.239
conservation biology
tropical and temperate ecology
community ecology
John Caspersen
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,442
2,887
0.388
forest ecology
global change biology
forestry
silviculture
Shelley Lumba
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,814
2,388
0.496
Plant Biology
Systems Biology
Plant-parasite Interactions
Genetics
Hormone Signalling
Heather E Mcfarlane
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,789
2,344
0.619
Keiko Yoshioka
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,168
2,157
0.417
John Ratcliffe
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,420
2,040
0.462
Animal Behaviour
Echolocation
Neuroethology
Sensory Ecology
P Kotanen
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,746
1,932
0.336
Plant ecology
herbivory
biological invasions
Wolfgang Moeder
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,861
1,818
0.374
Michael A Phillips
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,949
1,684
0.426
Plant metabolism
terpenoids
plant secondary metabolism
plant biochemistry
Azizur Rahman
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,128
1,382
0.649
Biomineralization/material science
Climate Change/Environmental Sciences
Marine biology
Zoology
Protein biochemistry
Patrick Ma James
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,467
1,330
0.539
forest disturbance
spatial ecology
population genetics
biodiversity
Matthew M Guzzo
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,292
1,130
0.875
Kant Shashi
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,094
1,026
0.938
Eliana Gonzales Vigil
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,589
876
0.551
Nigel Gale
University of Toronto
Toronto, Canada
![Canada](/flags/ca.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
999
824
0.825
Plant Ecology
Physiology
Forest Ecology
Biochar
Cannabis