Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 1.137 Scientists Citation Rankings (Sort by last 6 years Citation Index) - 2025
Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 1
Frailty
cognitive impairment
ageing
geriatric medicine
dementi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
134,843
70,609
0.524
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* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 2
enveloped viruses
open source programming
human influenza
membrane protein structure and dynamic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,677
63,695
0.985
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 3
Satellite Remote Sensing
Air Qualit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,510
58,260
0.644
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 4
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
67,907
42,640
0.628
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 5
Lithium-ion batteries
Physics & Chemistry of Materials for Energy Storage
Materials respirator applications
Electrochemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
110,458
38,747
0.351
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 6
microbiome
genomics
metagenomics
bioinformatics
machine learnin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,860
38,047
0.848
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 7
Cardiometabolic disease
clinical epidemiology
disease burden
nutrition
food securit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,309
37,652
0.831
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 8
home care patient safety qualitative research cystic fibrosis patient experience
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,455
30,938
0.953
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 9
evolutionary genomics
metagenomics
microbial ecolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,176
29,433
0.975
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* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 10
depression
bipolar disorder
psychosis
prevention
personalized treatmen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,401
23,710
0.534
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 11
Economic anthropology
Indigenous entrepreneurship
minorities
SMEs
diversity equity and inclusio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,780
22,349
0.625
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 12
Marine ecology
biodiversity science
conservation biology
fisherie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,606
22,327
0.409
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 13
mathematical modeling of phenotypic agin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,140
21,123
0.526
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 14
mood disorders
lithium
bipolar disorder
psychiatr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,169
20,946
0.535
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 15
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,257
19,908
0.534
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 16
Galaxy Evolution
Cosmology
Instrumentation in Astronom
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,422
19,874
0.340
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 17
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,885
17,682
0.658
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 18
Bioinformatics
Microbial evolution
Microbial ecology
Lateral gene transfe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,026
17,174
0.635
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 19
theoretical chemistry
density-functional theory
London dispersion
non-covalent interaction
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,183
16,839
0.540
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 20
marine ecology
historical ecology
coastal ecosystems
human impacts..
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,151
16,072
0.433
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 21
Plastic Pollution
Microplastics
Marine Debris
Plastic Policy
Industrial Contaminant
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,759
15,967
0.851
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 22
Innovative health delivery
trauma
Pain
mental health in children
clinical psycholog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,481
15,750
0.300
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 23
Systematic review
Knowledge translation
Prognosis research
Low back pai
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,267
15,255
0.540
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 24
substance abuse
addictions
anxiety disorders
drinking motives
comorbidit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,653
14,882
0.357
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection: 25
Li-ion battery
Electrochemistry
Rechargeable batteries
Energy materia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,072
13,802
0.724
* Last 6 Years Citation Counts Rankings
Rankings
1,629
65
1
Ranking Based On Selection: 1
Kenneth Rockwood
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
134,843
70,609
0.524
Frailty
cognitive impairment
ageing
geriatric medicine
dementi
* Last 6 Years Citation Counts Rankings
Rankings
1,943
71
2
Ranking Based On Selection: 2
Tyler Reddy
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
64,677
63,695
0.985
enveloped viruses
open source programming
human influenza
membrane protein structure and dynamic
* Last 6 Years Citation Counts Rankings
Rankings
2,233
80
3
Ranking Based On Selection: 3
Aaron Van Donkelaar
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
90,510
58,260
0.644
Satellite Remote Sensing
Air Qualit
* Last 6 Years Citation Counts Rankings
Rankings
3,768
135
4
Ranking Based On Selection: 4
Manuel Mattheisen
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
67,907
42,640
0.628
* Last 6 Years Citation Counts Rankings
Rankings
4,370
160
5
Ranking Based On Selection: 5
Jeff Dahn
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
110,458
38,747
0.351
Lithium-ion batteries
Physics & Chemistry of Materials for Energy Storage
Materials respirator applications
Electrochemistr
* Last 6 Years Citation Counts Rankings
Rankings
4,509
164
6
Ranking Based On Selection: 6
Morgan Langille
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,860
38,047
0.848
microbiome
genomics
metagenomics
bioinformatics
machine learnin
* Last 6 Years Citation Counts Rankings
Rankings
4,576
167
7
Ranking Based On Selection: 7
Leah Cahill
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45,309
37,652
0.831
Cardiometabolic disease
clinical epidemiology
disease burden
nutrition
food securit
* Last 6 Years Citation Counts Rankings
Rankings
6,239
224
8
Ranking Based On Selection: 8
Marilyn Macdonald
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
32,455
30,938
0.953
home care patient safety qualitative research cystic fibrosis patient experience
* Last 6 Years Citation Counts Rankings
Rankings
6,733
242
9
Ranking Based On Selection: 9
Gavin M Douglas
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
30,176
29,433
0.975
evolutionary genomics
metagenomics
microbial ecolog
* Last 6 Years Citation Counts Rankings
Rankings
9,509
330
10
Ranking Based On Selection: 10
Rudolf Uher
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
44,401
23,710
0.534
depression
bipolar disorder
psychosis
prevention
personalized treatmen
Is Your University Ready for the Future?
Compare your institution’s global, national, and city-level ranking with its 20 closest competitors and set strategic goals.
Gain insights from detailed performance analyses of scientists across 13 major disciplines, identify your strengths, improve weaknesses, and gain a competitive edge.. Check Your Free Sample Performance Analysis
* Last 6 Years Citation Counts Rankings
Rankings
10,432
367
11
Ranking Based On Selection: 11
Leo Paul Dana
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
35,780
22,349
0.625
Economic anthropology
Indigenous entrepreneurship
minorities
SMEs
diversity equity and inclusio
* Last 6 Years Citation Counts Rankings
Rankings
10,452
369
12
Ranking Based On Selection: 12
Boris Worm
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
54,606
22,327
0.409
Marine ecology
biodiversity science
conservation biology
fisherie
* Last 6 Years Citation Counts Rankings
Rankings
11,410
411
13
Ranking Based On Selection: 13
Arnold Mitnitski
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
40,140
21,123
0.526
mathematical modeling of phenotypic agin
* Last 6 Years Citation Counts Rankings
Rankings
11,551
417
14
Ranking Based On Selection: 14
Martin Alda
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
39,169
20,946
0.535
mood disorders
lithium
bipolar disorder
psychiatr
* Last 6 Years Citation Counts Rankings
Rankings
12,476
452
15
Ranking Based On Selection: 15
Michael Ungar
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,257
19,908
0.534
* Last 6 Years Citation Counts Rankings
Rankings
12,499
454
16
Ranking Based On Selection: 16
Scott Chapman
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
58,422
19,874
0.340
Galaxy Evolution
Cosmology
Instrumentation in Astronom
* Last 6 Years Citation Counts Rankings
Rankings
14,842
550
17
Ranking Based On Selection: 17
Sanja Stanojevic
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
26,885
17,682
0.658
* Last 6 Years Citation Counts Rankings
Rankings
15,509
576
18
Ranking Based On Selection: 18
Rob Beiko
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,026
17,174
0.635
Bioinformatics
Microbial evolution
Microbial ecology
Lateral gene transfe
* Last 6 Years Citation Counts Rankings
Rankings
15,974
594
19
Ranking Based On Selection: 19
Erin R Johnson
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
31,183
16,839
0.540
theoretical chemistry
density-functional theory
London dispersion
non-covalent interaction
* Last 6 Years Citation Counts Rankings
Rankings
17,120
653
20
Ranking Based On Selection: 20
Heike K Lotze
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
37,151
16,072
0.433
marine ecology
historical ecology
coastal ecosystems
human impacts..
* Last 6 Years Citation Counts Rankings
Rankings
17,305
659
21
Ranking Based On Selection: 21
Tony R Walker
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18,759
15,967
0.851
Plastic Pollution
Microplastics
Marine Debris
Plastic Policy
Industrial Contaminant
* Last 6 Years Citation Counts Rankings
Rankings
17,654
676
22
Ranking Based On Selection: 22
Patrick J Mcgrath
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
52,481
15,750
0.300
Innovative health delivery
trauma
Pain
mental health in children
clinical psycholog
* Last 6 Years Citation Counts Rankings
Rankings
18,550
703
23
Ranking Based On Selection: 23
Jill Hayden
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
28,267
15,255
0.540
Systematic review
Knowledge translation
Prognosis research
Low back pai
* Last 6 Years Citation Counts Rankings
Rankings
19,218
741
24
Ranking Based On Selection: 24
Sherry H Stewart
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
41,653
14,882
0.357
substance abuse
addictions
anxiety disorders
drinking motives
comorbidit
* Last 6 Years Citation Counts Rankings
Rankings
21,564
815
25
Ranking Based On Selection: 25
Chongyin Yang
Dalhousie University
Halifax, Canada
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
19,072
13,802
0.724
Li-ion battery
Electrochemistry
Rechargeable batteries
Energy materia