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
organic chemistry
theoretical chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
459
70
0.153
* Total i10 IndexRankings
Ranking Based On Selection :2
Marine Chemistry
Environmental Chemistry
Environmental Radiochemistry
Aquatic Chemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
310
206
0.665
* Total i10 IndexRankings
Ranking Based On Selection :3
conjugated-carbon nano-structures
chemical graph theory
valence-bond theory
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
300
60
0.200
* Total i10 IndexRankings
Ranking Based On Selection :4
marine mammals
behavior
ecology
conservation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
193
116
0.601
* Total i10 IndexRankings
Ranking Based On Selection :5
Marine Biology
Caves
Anchialine
Ecology
Evolution
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
188
65
0.346
* Total i10 IndexRankings
Ranking Based On Selection :6
oceanography
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
156
66
0.423
* Total i10 IndexRankings
Ranking Based On Selection :7
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
141
118
0.837
* Total i10 IndexRankings
Ranking Based On Selection :8
Comparative physiology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
109
64
0.587
* Total i10 IndexRankings
Ranking Based On Selection :9
coastal resilience
flood risk
hazard mitigation
disasters
environmental planning
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
105
90
0.857
* Total i10 IndexRankings
Ranking Based On Selection :10
Fisheries Ecology
Fisheries Oceanography
Population Connectivity
Fisheries Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
101
78
0.772
* Total i10 IndexRankings
Ranking Based On Selection :11
Marine fisheries ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
71
60
0.845
* Total i10 IndexRankings
Ranking Based On Selection :12
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
68
29
0.426
* Total i10 IndexRankings
Ranking Based On Selection :13
Biogeochemistry of bioactive elements - Arctic oceanography and soil biogeochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
58
51
0.879
* Total i10 IndexRankings
Ranking Based On Selection :14
Marine Biology
Ecological & Functional Morphology
Comparative Biomechanics
Integrative Organismal Biology
Conservation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
56
48
0.857
* Total i10 IndexRankings
Ranking Based On Selection :15
Oceanography and Environmental Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
56
46
0.821
* Total i10 IndexRankings
Ranking Based On Selection :16
biogeochemistry
dissolved organic matter
black carbon
lignin
terrigenous organic matter
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
56
39
0.696
* Total i10 IndexRankings
Ranking Based On Selection :17
Coastal Environment
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
53
38
0.717
* Total i10 IndexRankings
Ranking Based On Selection :18
natural hazards
hazard mitigation
spatial analysis
flood risk
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
45
0.918
* Total i10 IndexRankings
Ranking Based On Selection :19
Restoration ecology
Coastal community ecology
Wetland ecology
Trophic dynamics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
48
41
0.854
* Total i10 IndexRankings
Ranking Based On Selection :20
Marine Geology
Marine Science
Oceanography
Marine Sedimentology
Sedimentology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
46
29
0.630
* Total i10 IndexRankings
Ranking Based On Selection :21
Conservation Biology
Population Genetics
Molecular Ecology
Systematics
Evolution
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
22
0.512
* Total i10 IndexRankings
Ranking Based On Selection :22
paleoclimatology
micropaleontology
cave and karst science
coastal geology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
39
0.929
* Total i10 IndexRankings
Ranking Based On Selection :23
Invertebrate Biology
Marine Biology
Evolution
Development
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
26
0.619
* Total i10 IndexRankings
Ranking Based On Selection :24
ocean engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
14
0.368
* Total i10 IndexRankings
Ranking Based On Selection :25
biodiversidad
conservación
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
21
0.583
Alexandru T Balaban
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
459
70
0.153
organic chemistry
theoretical chemistry
Peter H Santschi
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
310
206
0.665
Marine Chemistry
Environmental Chemistry
Environmental Radiochemistry
Aquatic Chemistry
Douglas Klein
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
300
60
0.200
conjugated-carbon nano-structures
chemical graph theory
valence-bond theory
Bernd Wursig
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
193
116
0.601
marine mammals
behavior
ecology
conservation
Thomas M Iliffe
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
188
65
0.346
Marine Biology
Caves
Anchialine
Ecology
Evolution
Gilbert T Rowe
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
156
66
0.423
Antonietta Quigg
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
141
118
0.837
Randall William Davis
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
109
64
0.587
Samuel D Brody
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
105
90
0.857
coastal resilience
flood risk
hazard mitigation
disasters
environmental planning
Jay R Rooker
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
101
78
0.772
Fisheries Ecology
Fisheries Oceanography
Population Connectivity
Fisheries Science
RJ David Wells
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
71
60
0.845
Marine fisheries ecology
Glenn Jones
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
68
29
0.426
Karl Kaiser
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
58
51
0.879
Biogeochemistry of bioactive elements - Arctic oceanography and soil biogeochemistry
Christopher D Marshall
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
56
48
0.857
Marine Biology
Ecological & Functional Morphology
Comparative Biomechanics
Integrative Organismal Biology
Conservation
Saijin Zhang
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
56
46
0.821
Oceanography and Environmental Science
Patrick Louchouarn
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
56
39
0.696
biogeochemistry
dissolved organic matter
black carbon
lignin
terrigenous organic matter
Kyeong Park
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
53
38
0.717
Wesley E Highfield
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
45
0.918
Anna R Armitage
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
48
41
0.854
Restoration ecology
Coastal community ecology
Wetland ecology
Trophic dynamics
Timothy Dellapenna
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
46
29
0.630
Marine Geology
Marine Science
Oceanography
Marine Sedimentology
Sedimentology
Jaime R Alvarado Bremer
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
22
0.512
Conservation Biology
Population Genetics
Molecular Ecology
Systematics
Evolution
Pete J Van Hengstum
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
39
0.929
paleoclimatology
micropaleontology
cave and karst science
coastal geology
Anja Schulze
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
26
0.619
Invertebrate Biology
Marine Biology
Evolution
Development
Vijay Panchang
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
38
14
0.368
Diego Luis Gil Agudelo
Texas A&M University Galveston
Galveston, United States
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
36
21
0.583