Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 41 Scientists Citation Rankings - 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.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
marine ecology
movement ecology
sharks
conservation
fisherie
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,719
11,645
0.453
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* Total Citation Counts Rankings
Ranking Based On Selection: 2
Benthic Marine Ecology
Climate Change Ecology
Marine Biodiversit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,200
18,531
0.766
* Total Citation Counts Rankings
Ranking Based On Selection: 3
phytoplankton evolution and diversit
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,296
4,871
0.229
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,092
3,386
0.305
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Algal biolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,091
4,595
0.414
* Total Citation Counts Rankings
Ranking Based On Selection: 6
plankto
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,961
3,935
0.565
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Marine biology
Animal movement
behavioural ecology
animal telemetry
levy statistic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,682
3,551
0.531
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Marine Ecology
Shark Behaviour
Shark Conservation
Basking Shark
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,498
2,640
0.406
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Marine Microbiology
Microbiology
Microbial Ecolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,797
3,744
0.646
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* Total Citation Counts Rankings
Ranking Based On Selection: 10
Phytoplankton biology
molecular microbiology
evolution
microbial ecolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,333
4,282
0.803
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Ecology
Biology
Statistics
Programmin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,666
2,453
0.669
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Plankton Ecology
Genetics
Barcoding
Molecular Biolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,549
1,131
0.444
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Policy
diplomacy
Marine Biolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,154
742
0.344
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,625
1,326
0.816
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Marine biogeochemistr
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,521
1,370
0.901
* Total Citation Counts Rankings
Ranking Based On Selection: 16
marine biolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,434
466
0.325
* Total Citation Counts Rankings
Ranking Based On Selection: 17
invasion biology
marine biolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,359
658
0.484
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Kelp ecology
Climate change
Marine Heatwaves
Holobiont
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,322
1,246
0.943
* Total Citation Counts Rankings
Ranking Based On Selection: 19
cyanobacteria
fungi
lichens
ecological genomic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,167
924
0.792
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Marine Biodiversity
Data Management
Data Standard
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
941
567
0.603
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
880
700
0.795
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Ion channel
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
790
111
0.141
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
663
577
0.870
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Evolution of nervous systems
Small RNA biogenesis
Developmen
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
651
454
0.697
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Molecular biology
marine microbiolog
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
526
162
0.308
* Total Citation Counts Rankings
Rankings
30,547
2,666
1
Ranking Based On Selection: 1
David W. Sims
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
25,719
11,645
0.453
marine ecology
movement ecology
sharks
conservation
fisherie
* Total Citation Counts Rankings
Rankings
33,371
2,930
2
Ranking Based On Selection: 2
Dan Smale
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
24,200
18,531
0.766
Benthic Marine Ecology
Climate Change Ecology
Marine Biodiversit
* Total Citation Counts Rankings
Rankings
39,965
3,480
3
Ranking Based On Selection: 3
Linda Medlin
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
21,296
4,871
0.229
phytoplankton evolution and diversit
* Total Citation Counts Rankings
Rankings
93,289
7,814
4
Ranking Based On Selection: 4
William H Wilson
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,092
3,386
0.305
* Total Citation Counts Rankings
Rankings
93,299
7,816
5
Ranking Based On Selection: 5
Glen Wheeler
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,091
4,595
0.414
* Total Citation Counts Rankings
Rankings
156,733
12,370
6
Ranking Based On Selection: 6
David G. Johns
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,961
3,935
0.565
* Total Citation Counts Rankings
Rankings
163,525
12,813
7
Ranking Based On Selection: 7
Nicolas E Humphries
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,682
3,551
0.531
Marine biology
Animal movement
behavioural ecology
animal telemetry
levy statistic
* Total Citation Counts Rankings
Rankings
168,298
13,126
8
Ranking Based On Selection: 8
Emily J Southall
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,498
2,640
0.406
Marine Ecology
Shark Behaviour
Shark Conservation
Basking Shark
* Total Citation Counts Rankings
Rankings
188,816
14,521
9
Ranking Based On Selection: 9
Michael Cunliffe
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,797
3,744
0.646
Marine Microbiology
Microbiology
Microbial Ecolog
* Total Citation Counts Rankings
Rankings
204,797
15,643
10
Ranking Based On Selection: 10
Katherine E. Helliwell
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,333
4,282
0.803
Phytoplankton biology
molecular microbiology
evolution
microbial ecolog
Smart Institutional Plan
Powerful Insights + Smart Membership = Institutional Success
Unlock 360° Real-Time Institutional Analysis to identify your institution’s strengths and areas for improvement.
* Total Citation Counts Rankings
Rankings
288,930
20,973
11
Ranking Based On Selection: 11
Pierre Helaouet
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,666
2,453
0.669
Ecology
Biology
Statistics
Programmin
* Total Citation Counts Rankings
Rankings
388,807
26,621
12
Ranking Based On Selection: 12
Rowena Stern
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,549
1,131
0.444
Plankton Ecology
Genetics
Barcoding
Molecular Biolog
* Total Citation Counts Rankings
Rankings
440,362
29,320
13
Ranking Based On Selection: 13
Matthew Frost
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,154
742
0.344
Policy
diplomacy
Marine Biolog
* Total Citation Counts Rankings
Rankings
533,580
34,212
14
Ranking Based On Selection: 14
Kathryn E. Smith
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,625
1,326
0.816
* Total Citation Counts Rankings
Rankings
556,392
35,342
15
Ranking Based On Selection: 15
Clare Ostle
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,521
1,370
0.901
Marine biogeochemistr
* Total Citation Counts Rankings
Rankings
577,054
36,327
16
Ranking Based On Selection: 16
Harvey Tyler-Walters
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,434
466
0.325
* Total Citation Counts Rankings
Rankings
595,822
37,228
17
Ranking Based On Selection: 17
Christine A. Wood
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,359
658
0.484
invasion biology
marine biolog
* Total Citation Counts Rankings
Rankings
605,478
37,664
18
Ranking Based On Selection: 18
Nathan King
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,322
1,246
0.943
Kelp ecology
Climate change
Marine Heatwaves
Holobiont
* Total Citation Counts Rankings
Rankings
650,105
39,718
19
Ranking Based On Selection: 19
Nathan Am Chrismas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,167
924
0.792
cyanobacteria
fungi
lichens
ecological genomic
* Total Citation Counts Rankings
Rankings
727,822
43,052
20
Ranking Based On Selection: 20
Dan Lear
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
941
567
0.603
Marine Biodiversity
Data Management
Data Standard
* Total Citation Counts Rankings
Rankings
751,727
44,076
21
Ranking Based On Selection: 21
Harry Teagle
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
880
700
0.795
* Total Citation Counts Rankings
Rankings
790,044
45,618
22
Ranking Based On Selection: 22
Abdesslam Chrachri
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
790
111
0.141
* Total Citation Counts Rankings
Rankings
850,886
47,891
23
Ranking Based On Selection: 23
Birthe Zäncker
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
663
577
0.870
* Total Citation Counts Rankings
Rankings
857,264
48,138
24
Ranking Based On Selection: 24
Vengamanaidu Modepalli
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
651
454
0.697
Evolution of nervous systems
Small RNA biogenesis
Developmen
* Total Citation Counts Rankings
Rankings
937,712
51,889
25
Ranking Based On Selection: 25
Susan Wharam
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
526
162
0.308
Molecular biology
marine microbiolog