Total 2,403,032 scientists, country 221, and institutions 24,466 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 1
![Richard Thompson](https://cdn.adscientificindex.com/pictures/9d/1043868.jpg)
Microplastics
ecology of coastal defences
marine ecology
marine pollution
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
281
245
0.872
* Total i10 IndexRankings
Ranking Based On Selection: 2
![Andrew Turner](https://cdn.adscientificindex.com/pictures/21/1072563.jpg)
marine science
pollution
emerging contaminants
microplastics
XRF
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
230
165
0.717
* Total i10 IndexRankings
Ranking Based On Selection: 3
![Sanjay Sharma](https://cdn.adscientificindex.com/pictures/3e/1495896.jpg)
unmanned marine vehicles
AI techniques
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
224
75
0.335
* Total i10 IndexRankings
Ranking Based On Selection: 4
![Gerd Masselink](https://cdn.adscientificindex.com/pictures/1e/1159349.jpg)
Coastal processes
Geomorphology
Beaches
Coastal dynamics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
204
146
0.716
* Total i10 IndexRankings
Ranking Based On Selection: 5
![Long yuan Li](/user/assets/images/profile/no-profile-photo.png)
Concrete
steel
buckling
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
203
141
0.695
* Total i10 IndexRankings
Ranking Based On Selection: 6
![Jason M Hall Spencer|Jason Hall-Spencer](https://cdn.adscientificindex.com/pictures/99/1043869.jpg)
Marine Ecology
Marine Biodiversity
Deep-sea biology
Ocean Acidification
Phycology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
200
173
0.865
* Total i10 IndexRankings
Ranking Based On Selection: 7
![Mangla Sachin Kumar|Sachin Mangla Kumar](https://cdn.adscientificindex.com/pictures/de/1220148.jpg)
Circular Economy & Industry 4.0
Supply Chain Sustainability
Decision Support System
Cross-disciplinary research in OM
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
186
184
0.989
* Total i10 IndexRankings
Ranking Based On Selection: 8
![John Spicer](https://cdn.adscientificindex.com/pictures/df/1043874.jpg)
Ecophysiology
Environmental Hypoxia
Ocean Acidification
Climate Change
Invasion of Land by Amphipods
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
186
95
0.511
* Total i10 IndexRankings
Ranking Based On Selection: 9
![Mike Smith](/user/assets/images/profile/no-profile-photo.png)
geomorpohlogy
geomorphometry
glaciology
remote sensing
uav
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
175
86
0.491
* Total i10 IndexRankings
Ranking Based On Selection: 10
![Steven Rowland](https://cdn.adscientificindex.com/pictures/5f/1219956.jpg)
organic geochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
172
89
0.517
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
* Total i10 IndexRankings
Ranking Based On Selection: 11
![Eduardo R Miranda](https://cdn.adscientificindex.com/pictures/05/1056823.jpg)
Computer Music
ArtIfiicial Intelligence
Music Neurotech
Quantum Computing & Music
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
166
77
0.464
* Total i10 IndexRankings
Ranking Based On Selection: 12
![Ray Jones](https://cdn.adscientificindex.com/pictures/20/1053678.jpg)
Health Informatics
e-health
digital health
robotics
digital equity
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
153
83
0.542
* Total i10 IndexRankings
Ranking Based On Selection: 13
![Murray T Brown](https://cdn.adscientificindex.com/pictures/fa/1043832.jpg)
Environmental Physiology
Stress Biology and Ecotoxicology of Marine Algae and Aquatic Plants
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
149
82
0.550
* Total i10 IndexRankings
Ranking Based On Selection: 14
![Simon Belt](/user/assets/images/profile/no-profile-photo.png)
Organic geochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
147
90
0.612
* Total i10 IndexRankings
Ranking Based On Selection: 15
![Victoria L Allgar](/user/assets/images/profile/no-profile-photo.png)
Medical Statistics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
144
96
0.667
* Total i10 IndexRankings
Ranking Based On Selection: 16
![Daniel Martin](https://cdn.adscientificindex.com/pictures/4c/1283560.jpg)
Hypoxia
oxygen
critical illness
perioperative medicine
exercise testing and training
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
143
114
0.797
* Total i10 IndexRankings
Ranking Based On Selection: 17
![C Oliver Hanemann](https://cdn.adscientificindex.com/pictures/3e/1070031.jpg)
Neurology
Neuroscience
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
140
92
0.657
* Total i10 IndexRankings
Ranking Based On Selection: 18
![Ruth Endacott](/user/assets/images/profile/no-profile-photo.png)
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
139
98
0.705
* Total i10 IndexRankings
Ranking Based On Selection: 19
![Heather Skirton](/user/assets/images/profile/no-profile-photo.png)
genetics
nursing
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
138
81
0.587
* Total i10 IndexRankings
Ranking Based On Selection: 20
![Simon Jackson](/user/assets/images/profile/no-profile-photo.png)
immunity infection
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
136
71
0.522
* Total i10 IndexRankings
Ranking Based On Selection: 21
![Playford Rj](https://cdn.adscientificindex.com/pictures/6a/4975345.jpg)
Gastroenterology
Gut repair
Nutraceuticals
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
132
63
0.477
* Total i10 IndexRankings
Ranking Based On Selection: 22
![Donald Harvey Tarling](https://cdn.adscientificindex.com/pictures/8b/1056141.jpg)
geophysics
paleomagnetism
plate tectonics
archaeomagnetism
origin solar system
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
130
10
0.077
* Total i10 IndexRankings
Ranking Based On Selection: 23
![Martin Edwards](https://cdn.adscientificindex.com/pictures/45/1126332.jpg)
Plankton
Ocean ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
124
91
0.734
* Total i10 IndexRankings
Ranking Based On Selection: 24
![David T Bilton](https://cdn.adscientificindex.com/pictures/ad/919941.jpg)
Beetles
Aquatic Entomology
Systematic Entomology
Freshwater Conservation
Historical Biogeography
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
118
74
0.627
* Total i10 IndexRankings
Ranking Based On Selection: 25
![Nathan Clarke](https://cdn.adscientificindex.com/pictures/34/1056464.jpg)
cyber security
biometrics
digital forensics
artificial intelligence
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
117
68
0.581
Richard Thompson
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
281
245
0.872
Microplastics
ecology of coastal defences
marine ecology
marine pollution
Andrew Turner
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
230
165
0.717
marine science
pollution
emerging contaminants
microplastics
XRF
Sanjay Sharma
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
224
75
0.335
unmanned marine vehicles
AI techniques
Gerd Masselink
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
204
146
0.716
Coastal processes
Geomorphology
Beaches
Coastal dynamics
Long yuan Li
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
203
141
0.695
Jason M Hall Spencer|Jason Hall-Spencer
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
200
173
0.865
Marine Ecology
Marine Biodiversity
Deep-sea biology
Ocean Acidification
Phycology
Mangla Sachin Kumar|Sachin Mangla Kumar
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
186
184
0.989
Circular Economy & Industry 4.0
Supply Chain Sustainability
Decision Support System
Cross-disciplinary research in OM
John Spicer
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
186
95
0.511
Ecophysiology
Environmental Hypoxia
Ocean Acidification
Climate Change
Invasion of Land by Amphipods
Mike Smith
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
175
86
0.491
geomorpohlogy
geomorphometry
glaciology
remote sensing
uav
Steven Rowland
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
172
89
0.517
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Eduardo R Miranda
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
166
77
0.464
Computer Music
ArtIfiicial Intelligence
Music Neurotech
Quantum Computing & Music
Ray Jones
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
153
83
0.542
Health Informatics
e-health
digital health
robotics
digital equity
Murray T Brown
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
149
82
0.550
Environmental Physiology
Stress Biology and Ecotoxicology of Marine Algae and Aquatic Plants
Simon Belt
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
147
90
0.612
Victoria L Allgar
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
144
96
0.667
Daniel Martin
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
143
114
0.797
Hypoxia
oxygen
critical illness
perioperative medicine
exercise testing and training
C Oliver Hanemann
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
140
92
0.657
Ruth Endacott
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
139
98
0.705
Heather Skirton
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
138
81
0.587
Simon Jackson
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
136
71
0.522
Playford Rj
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
132
63
0.477
Gastroenterology
Gut repair
Nutraceuticals
Donald Harvey Tarling
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
130
10
0.077
geophysics
paleomagnetism
plate tectonics
archaeomagnetism
origin solar system
Martin Edwards
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
124
91
0.734
Plankton
Ocean ecology
David T Bilton
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
118
74
0.627
Beetles
Aquatic Entomology
Systematic Entomology
Freshwater Conservation
Historical Biogeography
Nathan Clarke
University of Plymouth
Plymouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
117
68
0.581
cyber security
biometrics
digital forensics
artificial intelligence