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
Environmental engineering
Forestry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
234
43
0.184
* Total i10 IndexRankings
Ranking Based On Selection :2
Environmental sciences
GIS
Spatial analysis
Soil
Metals
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
212
177
0.835
* Total i10 IndexRankings
Ranking Based On Selection :3
environmental engineering and science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
155
129
0.832
* Total i10 IndexRankings
Ranking Based On Selection :4
N-P-Carbon
hydrology
soil health
soil water management
bio-based fertilizers and soil amendments
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
150
128
0.853
* Total i10 IndexRankings
Ranking Based On Selection :5
Wastewater Treatment
Anaerobic Digestion
Biological Nutrient Removal
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
127
111
0.874
* Total i10 IndexRankings
Ranking Based On Selection :6
Environmental Engineering
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
123
100
0.813
* Total i10 IndexRankings
Ranking Based On Selection :7
hydrology
water resources
engineering
systems analysis
multi-criteria decision making
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
106
65
0.613
* Total i10 IndexRankings
Ranking Based On Selection :8
Life cycle assessment
environmental management
food systems
energy systems
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
97
88
0.907
* Total i10 IndexRankings
Ranking Based On Selection :9
Rivers
wastewater
drinking water
climate change
nematophagous fungi
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
95
50
0.526
* Total i10 IndexRankings
Ranking Based On Selection :10
Farmland Ecology
Conservation Biology
Ecosystem Function
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
91
71
0.780
* Total i10 IndexRankings
Ranking Based On Selection :11
environmental science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
87
83
0.954
* Total i10 IndexRankings
Ranking Based On Selection :12
Biofuels
Electrofuels
Anaerobic digestion
Power-to-X
CO2 utilisation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
80
79
0.988
* Total i10 IndexRankings
Ranking Based On Selection :13
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
75
72
0.960
* Total i10 IndexRankings
Ranking Based On Selection :14
wastewater & water engineering
LCA
process engineering and modelling
active travel & transport
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
72
55
0.764
* Total i10 IndexRankings
Ranking Based On Selection :15
Fluvial geomorphology
floods
Quaternary palaeoclimate change
erosion
connectivity
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
63
42
0.667
* Total i10 IndexRankings
Ranking Based On Selection :16
Hydrogeology
Epidemiology
Hydrodynamics
Waterborne Pathogens
Geostatistics
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
51
48
0.941
* Total i10 IndexRankings
Ranking Based On Selection :17
sustainability science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
28
0.571
* Total i10 IndexRankings
Ranking Based On Selection :18
Biogeochemistry
Environmental Change
Marine Chemistry and Geochemistry
Earth Sciences
Environmental Science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
47
37
0.787
* Total i10 IndexRankings
Ranking Based On Selection :19
Wastewater
Biosolids
Constructed wetlands
Microalgae
Bioenergy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
44
41
0.932
* Total i10 IndexRankings
Ranking Based On Selection :20
climate
climate change
urban climate
glaciers
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
44
30
0.682
* Total i10 IndexRankings
Ranking Based On Selection :21
Global Change
Climate Change
Multiple Stressors
Freshwater
Ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
41
0.953
* Total i10 IndexRankings
Ranking Based On Selection :22
Environmental Science
Sustainable development
Modelling and metrics for sustainability
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
30
0.714
* Total i10 IndexRankings
Ranking Based On Selection :23
Soil and environmental microbiology
Microbial ecology
Nutrient cycling
Enteric Pathogens
Plant-soil-microbial interactions
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
36
0.923
* Total i10 IndexRankings
Ranking Based On Selection :24
Green H2
Water Splitting
Electrolysis
Electrochemistry
Materials characterisation
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
37
34
0.919
* Total i10 IndexRankings
Ranking Based On Selection :25
Environmental policy
values
valuation
impact assessment
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
37
28
0.757
Michael Rodgers
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
234
43
0.184
Environmental engineering
Forestry
Chaosheng Zhang
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
212
177
0.835
Environmental sciences
GIS
Spatial analysis
Soil
Metals
Zhan Xinmin
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
155
129
0.832
environmental engineering and science
Owen Fenton
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
150
128
0.853
N-P-Carbon
hydrology
soil health
soil water management
bio-based fertilizers and soil amendments
Guangxue Wu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
127
111
0.874
Wastewater Treatment
Anaerobic Digestion
Biological Nutrient Removal
Laurence Gill
Trinity College Dublin
Dublin, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
123
100
0.813
Environmental Engineering
Michael Bruen
University College Dublin
Dublin, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
106
65
0.613
hydrology
water resources
engineering
systems analysis
multi-criteria decision making
David Styles
University of Limerick
Limerick, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
97
88
0.907
Life cycle assessment
environmental management
food systems
energy systems
Gray NF
Trinity College Dublin
Dublin, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
95
50
0.526
Rivers
wastewater
drinking water
climate change
nematophagous fungi
John Finn
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
91
71
0.780
Farmland Ecology
Conservation Biology
Ecosystem Function
Liam Morrison
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
87
83
0.954
environmental science
Richen Lin
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
80
79
0.988
Biofuels
Electrofuels
Anaerobic digestion
Power-to-X
CO2 utilisation
Per-Erik Mellander
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
75
72
0.960
Eoghan Clifford
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
72
55
0.764
wastewater & water engineering
LCA
process engineering and modelling
active travel & transport
Jacky Croke
University College Dublin
Dublin, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
63
42
0.667
Fluvial geomorphology
floods
Quaternary palaeoclimate change
erosion
connectivity
Paul Dylan Hynds
Trinity College Dublin
Dublin, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
51
48
0.941
Hydrogeology
Epidemiology
Hydrodynamics
Waterborne Pathogens
Geostatistics
Richard Moles
University of Limerick
Limerick, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
49
28
0.571
sustainability science
Carlos Rocha
Trinity College Dublin
Dublin, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
47
37
0.787
Biogeochemistry
Environmental Change
Marine Chemistry and Geochemistry
Earth Sciences
Environmental Science
Yuansheng Hu
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
44
41
0.932
Wastewater
Biosolids
Constructed wetlands
Microalgae
Bioenergy
Rowan Fealy
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
44
30
0.682
climate
climate change
urban climate
glaciers
Jeremy J Piggott
Trinity College Dublin
Dublin, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
43
41
0.953
Global Change
Climate Change
Multiple Stressors
Freshwater
Ecology
Bernadette O Regan
University of Limerick
Limerick, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
42
30
0.714
Environmental Science
Sustainable development
Modelling and metrics for sustainability
Fiona Brennan
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
39
36
0.923
Soil and environmental microbiology
Microbial ecology
Nutrient cycling
Enteric Pathogens
Plant-soil-microbial interactions
Michelle P Browne
Trinity College Dublin
Dublin, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
37
34
0.919
Green H2
Water Splitting
Electrolysis
Electrochemistry
Materials characterisation
Craig Bullock
University College Dublin
Dublin, Ireland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
37
28
0.757
Environmental policy
values
valuation
impact assessment