Citation Rankings (Highly Cited Researchers) 2024 and list of influential and most cited researchers in Agriculture and Forestry, Art, Design and Architecture, 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)
* Total Citation Counts Rankings
World Rank
3,121
Country Rank
117
Institution Rank : 1
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![John Giesy](https://cdn.adscientificindex.com/pictures/d1/641090.jpg)
Ecotoxicology
Environmental Chemistry
Aquatic Toxicology
Ecology
Environmental Toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97,528
31,733
0.325
* Total Citation Counts Rankings
World Rank
8,379
Country Rank
314
Institution Rank : 2
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Donald W Cockcroft](https://cdn.adscientificindex.com/pictures/26/641490.jpg)
asthma
respiratory medicine
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,689
7,782
0.142
* Total Citation Counts Rankings
World Rank
8,888
Country Rank
336
Institution Rank : 3
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Roy Billinton](/user/assets/images/profile/no-profile-photo.png)
Power System Reliability
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,768
10,250
0.194
* Total Citation Counts Rankings
World Rank
9,926
Country Rank
386
Institution Rank : 4
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Leon Kochian](https://cdn.adscientificindex.com/pictures/49/641150.jpg)
root biology
plant abiotic stress
mineral nutrition
membrane transport
root phenotyping
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,219
13,633
0.277
* Total Citation Counts Rankings
World Rank
12,504
Country Rank
480
Institution Rank : 5
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Madan M Gupta](https://cdn.adscientificindex.com/pictures/85/642074.jpg)
neural networks
fuzzy logic
control
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,498
15,679
0.369
* Total Citation Counts Rankings
World Rank
12,991
Country Rank
501
Institution Rank : 6
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Jeffrey J Mcdonnell](https://cdn.adscientificindex.com/pictures/b0/641317.jpg)
Isotope Hydrology
Ecohydrology
Forest Hydrology
Geomorphology
Hydrogeology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,562
17,016
0.409
* Total Citation Counts Rankings
World Rank
14,812
Country Rank
580
Institution Rank : 7
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Js Famiglietti](https://cdn.adscientificindex.com/pictures/fc/641458.jpg)
Hydrology
Remote Sensing
Global Change
Groundwater Sustainability
Water Security
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,273
21,103
0.551
* Total Citation Counts Rankings
World Rank
17,065
Country Rank
688
Institution Rank : 9
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Martyn Clark](https://cdn.adscientificindex.com/pictures/41/641459.jpg)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,961
19,201
0.549
* Total Citation Counts Rankings
World Rank
16,907
Country Rank
680
Institution Rank : 8
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Ali Rajput](https://cdn.adscientificindex.com/pictures/4f/4973791.jpg)
Dr.M Ali Rajput iNa .MBBS
MCPS
FCPS
MRCP. MBBS ECG city Burewala
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,161
14,856
0.423
* Total Citation Counts Rankings
World Rank
18,395
Country Rank
750
Institution Rank : 10
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Haissam Haddad](https://cdn.adscientificindex.com/pictures/d2/644872.jpg)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,298
24,828
0.746
* Total Citation Counts Rankings
World Rank
19,316
Country Rank
784
Institution Rank : 11
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Marek Witold Radomski](https://cdn.adscientificindex.com/pictures/9b/641619.jpg)
pharmacology
nanopharmacology
nanomedicine
platelets
nitric oxide
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,255
5,700
0.177
* Total Citation Counts Rankings
World Rank
23,961
Country Rank
980
Institution Rank : 12
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Alexander Rajput](https://cdn.adscientificindex.com/pictures/31/642484.jpg)
Movement disorders
Parkinson's disease
parkinsonisms
Essential Tremor
clinicopathologic studies
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,152
9,377
0.333
* Total Citation Counts Rankings
World Rank
26,305
Country Rank
1,065
Institution Rank : 13
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![John Pomeroy](https://cdn.adscientificindex.com/pictures/22/641620.jpg)
snow
hydrology
prediction
climate
cold regions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,446
11,520
0.436
* Total Citation Counts Rankings
World Rank
26,440
Country Rank
1,072
Institution Rank : 14
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![John S Tse](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,357
8,684
0.329
* Total Citation Counts Rankings
World Rank
26,799
Country Rank
1,091
Institution Rank : 15
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Carl Gutwin](/user/assets/images/profile/no-profile-photo.png)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,119
7,183
0.275
* Total Citation Counts Rankings
World Rank
30,704
Country Rank
1,262
Institution Rank : 16
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Graham N George](https://cdn.adscientificindex.com/pictures/cf/641646.jpg)
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,833
5,734
0.241
* Total Citation Counts Rankings
World Rank
32,468
Country Rank
1,357
Institution Rank : 17
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Douglas Chivers](/user/assets/images/profile/no-profile-photo.png)
behavioural ecology
evolutionary ecology
predator-prey interactions
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,948
7,552
0.329
* Total Citation Counts Rankings
World Rank
34,702
Country Rank
1,456
Institution Rank : 18
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Miroslaw Cygler](/user/assets/images/profile/no-profile-photo.png)
Structural biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,862
4,129
0.189
* Total Citation Counts Rankings
World Rank
35,198
Country Rank
1,484
Institution Rank : 19
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Andrew Leask](https://cdn.adscientificindex.com/pictures/06/642132.jpg)
fibrosis
scleroderma
tumor microenvironment
matricellular proteins
extracellular matrix
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,641
5,766
0.266
* Total Citation Counts Rankings
World Rank
35,443
Country Rank
1,496
Institution Rank : 20
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Ingrid J Pickering](https://cdn.adscientificindex.com/pictures/9c/641862.jpg)
X-ray absorption spectroscopy
X-ray fluorescence imaging
selenium
mercury
arsenic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,532
5,736
0.266
* Total Citation Counts Rankings
World Rank
40,394
Country Rank
1,747
Institution Rank : 21
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Gregg P Adams](https://cdn.adscientificindex.com/pictures/8a/641915.jpg)
Reproductive biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,642
5,168
0.263
* Total Citation Counts Rankings
World Rank
40,689
Country Rank
1,762
Institution Rank : 22
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Howard Wheater](https://cdn.adscientificindex.com/pictures/33/642075.jpg)
Hydrological processes & modelling
Management of flood risk
Management of water resources
Management of water quality
Manage
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,530
7,171
0.367
* Total Citation Counts Rankings
World Rank
41,302
Country Rank
1,783
Institution Rank : 23
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Emina Torlakovic](/user/assets/images/profile/no-profile-photo.png)
Laboratory Medicine
Pathology
Biomarkers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,326
8,094
0.419
* Total Citation Counts Rankings
World Rank
43,577
Country Rank
1,898
Institution Rank : 24
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Darren R Korber](/user/assets/images/profile/no-profile-photo.png)
microbial biofilms
ecology
proteomics
mine tailings
repositories for used nuclear fuel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,556
4,657
0.251
* Total Citation Counts Rankings
World Rank
45,820
Country Rank
1,983
Institution Rank : 25
![](https://cdn.adscientificindex.com/logos/11346.jpg)
![Canada](/flags/ca.png)
![Steven D Siciliano](https://cdn.adscientificindex.com/pictures/69/642260.jpg)
Soil Science
Toxicology
Polar Soils
Remediation
Climate Change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,896
6,366
0.356
* Total Citation Counts Rankings
World Ranking
3,121
Country Ranking
117
Institution Ranking
1
John Giesy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
97,528
31,733
0.325
![](https://cdn.adscientificindex.com/logos/11346.jpg)
Ecotoxicology
Environmental Chemistry
Aquatic Toxicology
Ecology
Environmental Toxicology
* Total Citation Counts Rankings
World Ranking
8,379
Country Ranking
314
Institution Ranking
2
Donald W Cockcroft
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,689
7,782
0.142
* Total Citation Counts Rankings
World Ranking
8,888
Country Ranking
336
Institution Ranking
3
Roy Billinton
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,768
10,250
0.194
![](https://cdn.adscientificindex.com/logos/11346.jpg)
Power System Reliability
* Total Citation Counts Rankings
World Ranking
9,926
Country Ranking
386
Institution Ranking
4
Leon Kochian
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,219
13,633
0.277
![](https://cdn.adscientificindex.com/logos/11346.jpg)
root biology
plant abiotic stress
mineral nutrition
membrane transport
root phenotyping
* Total Citation Counts Rankings
World Ranking
12,504
Country Ranking
480
Institution Ranking
5
Madan M Gupta
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
42,498
15,679
0.369
* Total Citation Counts Rankings
World Ranking
12,991
Country Ranking
501
Institution Ranking
6
Jeffrey J Mcdonnell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,562
17,016
0.409
![](https://cdn.adscientificindex.com/logos/11346.jpg)
Isotope Hydrology
Ecohydrology
Forest Hydrology
Geomorphology
Hydrogeology
* Total Citation Counts Rankings
World Ranking
14,812
Country Ranking
580
Institution Ranking
7
Js Famiglietti
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
38,273
21,103
0.551
![](https://cdn.adscientificindex.com/logos/11346.jpg)
Hydrology
Remote Sensing
Global Change
Groundwater Sustainability
Water Security
* Total Citation Counts Rankings
World Ranking
17,065
Country Ranking
688
Institution Ranking
9
Martyn Clark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
34,961
19,201
0.549
* Total Citation Counts Rankings
World Ranking
16,907
Country Ranking
680
Institution Ranking
8
Ali Rajput
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,161
14,856
0.423
![](https://cdn.adscientificindex.com/logos/11346.jpg)
Dr.M Ali Rajput iNa .MBBS
MCPS
FCPS
MRCP. MBBS ECG city Burewala
* Total Citation Counts Rankings
World Ranking
18,395
Country Ranking
750
Institution Ranking
10
Haissam Haddad
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
33,298
24,828
0.746
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* Total Citation Counts Rankings
World Ranking
19,316
Country Ranking
784
Institution Ranking
11
Marek Witold Radomski
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,255
5,700
0.177
![](https://cdn.adscientificindex.com/logos/11346.jpg)
pharmacology
nanopharmacology
nanomedicine
platelets
nitric oxide
* Total Citation Counts Rankings
World Ranking
23,961
Country Ranking
980
Institution Ranking
12
Alexander Rajput
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,152
9,377
0.333
![](https://cdn.adscientificindex.com/logos/11346.jpg)
Movement disorders
Parkinson's disease
parkinsonisms
Essential Tremor
clinicopathologic studies
* Total Citation Counts Rankings
World Ranking
26,305
Country Ranking
1,065
Institution Ranking
13
John Pomeroy
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,446
11,520
0.436
![](https://cdn.adscientificindex.com/logos/11346.jpg)
snow
hydrology
prediction
climate
cold regions
* Total Citation Counts Rankings
World Ranking
26,440
Country Ranking
1,072
Institution Ranking
14
John S Tse
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,357
8,684
0.329
* Total Citation Counts Rankings
World Ranking
26,799
Country Ranking
1,091
Institution Ranking
15
Carl Gutwin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,119
7,183
0.275
* Total Citation Counts Rankings
World Ranking
30,704
Country Ranking
1,262
Institution Ranking
16
Graham N George
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,833
5,734
0.241
* Total Citation Counts Rankings
World Ranking
32,468
Country Ranking
1,357
Institution Ranking
17
Douglas Chivers
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,948
7,552
0.329
![](https://cdn.adscientificindex.com/logos/11346.jpg)
behavioural ecology
evolutionary ecology
predator-prey interactions
* Total Citation Counts Rankings
World Ranking
34,702
Country Ranking
1,456
Institution Ranking
18
Miroslaw Cygler
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,862
4,129
0.189
* Total Citation Counts Rankings
World Ranking
35,198
Country Ranking
1,484
Institution Ranking
19
Andrew Leask
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,641
5,766
0.266
![](https://cdn.adscientificindex.com/logos/11346.jpg)
fibrosis
scleroderma
tumor microenvironment
matricellular proteins
extracellular matrix
* Total Citation Counts Rankings
World Ranking
35,443
Country Ranking
1,496
Institution Ranking
20
Ingrid J Pickering
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,532
5,736
0.266
![](https://cdn.adscientificindex.com/logos/11346.jpg)
X-ray absorption spectroscopy
X-ray fluorescence imaging
selenium
mercury
arsenic
* Total Citation Counts Rankings
World Ranking
40,394
Country Ranking
1,747
Institution Ranking
21
Gregg P Adams
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,642
5,168
0.263
* Total Citation Counts Rankings
World Ranking
40,689
Country Ranking
1,762
Institution Ranking
22
Howard Wheater
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,530
7,171
0.367
![](https://cdn.adscientificindex.com/logos/11346.jpg)
Hydrological processes & modelling
Management of flood risk
Management of water resources
Management of water quality
Manage
* Total Citation Counts Rankings
World Ranking
41,302
Country Ranking
1,783
Institution Ranking
23
Emina Torlakovic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,326
8,094
0.419
* Total Citation Counts Rankings
World Ranking
43,577
Country Ranking
1,898
Institution Ranking
24
Darren R Korber
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,556
4,657
0.251
![](https://cdn.adscientificindex.com/logos/11346.jpg)
microbial biofilms
ecology
proteomics
mine tailings
repositories for used nuclear fuel
* Total Citation Counts Rankings
World Ranking
45,820
Country Ranking
1,983
Institution Ranking
25
Steven D Siciliano
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,896
6,366
0.356
![](https://cdn.adscientificindex.com/logos/11346.jpg)
Soil Science
Toxicology
Polar Soils
Remediation
Climate Change