Productivity Rankings is a unique service offered only by “AD Scientific Index”. This is a ranking system derived from the i10 index in order to show the productivity of the scientist in publishing scientific articles of value. Productivity Rankings is an instrument that lists productive scientists in a given area, discipline, university, and country and can guide the development of meaningful incentives and academic policies. The world rankings, regional rankings, and university rankings of scientists in this table are developed based on the total i10 index. Additionally, click to view the special rankings based on Productivity Rankings: Scientists Last 6 years' i10 Index", Universities Total i10 Index Rankings 2025, Universities Last 6 Years i10 Index Rankings 2025 "Art and Humanities i10 Productivity Rankings" and "Social Sciences and Humanities i10 Productivity Rankings".
* Total i10 IndexRankings
Ranking Based On Selection :1
Marine Chemical Ecology
Marine Biotechnology
Antifouling studies
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
99
85
0.859
* Total i10 IndexRankings
Ranking Based On Selection :2
Ocean policy
marine policy
blue economy
plastics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
82
56
0.683
* Total i10 IndexRankings
Ranking Based On Selection :3
marine wood borers
lignocellulose digestion
mangrove ecology
wood protection
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
40
0.526
* Total i10 IndexRankings
Ranking Based On Selection :4
Marine Biology
Ecology
Ecotoxicology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
70
49
0.700
* Total i10 IndexRankings
Ranking Based On Selection :5
marine fisheries ecology
coral reef fish ecology
small scale fisheries
marine protected areas
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
26
0.722
* Total i10 IndexRankings
Ranking Based On Selection :6
Biofilms
marine microbiology
biomimetics
ecophysiology
microfluidics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
12
0.923
* Total i10 IndexRankings
Ranking Based On Selection :7
marine biology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625
* Total i10 IndexRankings
Ranking Based On Selection :8
Ocean policy
blue governance
ocean plastics
sustainable development
social inclusion
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
* Total i10 IndexRankings
Ranking Based On Selection :9
Coastal geomorphology
Rocky coasts
Water quality
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
claire hellio
University of Portsmouth
Portsmouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
99
85
0.859
Marine Chemical Ecology
Marine Biotechnology
Antifouling studies
Steve Fletcher
University of Portsmouth
Portsmouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
82
56
0.683
Ocean policy
marine policy
blue economy
plastics
Simon Cragg
University of Portsmouth
Portsmouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
40
0.526
marine wood borers
lignocellulose digestion
mangrove ecology
wood protection
Alex Ford
University of Portsmouth
Portsmouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
70
49
0.700
Marine Biology
Ecology
Ecotoxicology
Mark Tupper
University of Portsmouth
Portsmouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
26
0.722
marine fisheries ecology
coral reef fish ecology
small scale fisheries
marine protected areas
Maria Salta
University of Portsmouth
Portsmouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
13
12
0.923
Biofilms
marine microbiology
biomimetics
ecophysiology
microfluidics
Paul Farrell
University of Portsmouth
Portsmouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
8
5
0.625
Antaya March
University of Portsmouth
Portsmouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
6
6
1.000
Ocean policy
blue governance
ocean plastics
sustainable development
social inclusion
Linley Hastewell
University of Portsmouth
Portsmouth, United Kingdom
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
Coastal geomorphology
Rocky coasts
Water quality