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
Climate
Environment
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
139
77
0.554
* Total i10 IndexRankings
Ranking Based On Selection :2
Conservation biology
Climate change
Biodiversity
Species distribution modelling
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
113
88
0.779
* Total i10 IndexRankings
Ranking Based On Selection :3
Conservation biology
butterfly ecology
agroecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
105
85
0.810
* Total i10 IndexRankings
Ranking Based On Selection :4
biogeochemistry
climate change
air pollution
lakes
catchments
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
105
48
0.457
* Total i10 IndexRankings
Ranking Based On Selection :5
Marine ecology
Baltic Sea
Eutrophication
Microbes
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
103
45
0.437
* Total i10 IndexRankings
Ranking Based On Selection :6
Biogeochemical cycles
climate change
land use
atmospheric deposition
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
101
72
0.713
* Total i10 IndexRankings
Ranking Based On Selection :7
Agri-environmental issues
Life cycle assessment
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
96
54
0.563
* Total i10 IndexRankings
Ranking Based On Selection :8
Policy analysis and evaluation
natural resource management
programme assessment
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
96
51
0.531
* Total i10 IndexRankings
Ranking Based On Selection :9
aquatic macrophytes
monitoring
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
91
43
0.473
* Total i10 IndexRankings
Ranking Based On Selection :10
Phytoplankton Ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
80
64
0.800
* Total i10 IndexRankings
Ranking Based On Selection :11
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
78
19
0.244
* Total i10 IndexRankings
Ranking Based On Selection :12
Environmental studies
social science
science communication
sustainability indicators
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
77
58
0.753
* Total i10 IndexRankings
Ranking Based On Selection :13
Climate change
environmental impact assessment
resource efficiency
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
77
42
0.545
* Total i10 IndexRankings
Ranking Based On Selection :14
Biodiversity conservation
Bird ecology
Boreal
Climate change
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
54
0.711
* Total i10 IndexRankings
Ranking Based On Selection :15
Biodiversity
Baltic Sea
Pelagic and benthic ecology
Marine spatial planning
Conservation ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
73
50
0.685
* Total i10 IndexRankings
Ranking Based On Selection :16
Ecosystem based management and assessment of aquatic ecosystems
Marine and Water Policies
aquatic
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
70
46
0.657
* Total i10 IndexRankings
Ranking Based On Selection :17
contaminants
emerging pollutants
aquatic environment
regional limnology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
69
25
0.362
* Total i10 IndexRankings
Ranking Based On Selection :18
marine biology
ecotoxicology
ecophysiology
biological effects
hazardous substances
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
67
53
0.791
* Total i10 IndexRankings
Ranking Based On Selection :19
nutrient load
modelling
catchment
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
35
0.530
* Total i10 IndexRankings
Ranking Based On Selection :20
Catchment modelling
biogeochemical cycles
nitrogen
carbon
hydrology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
31
0.470
* Total i10 IndexRankings
Ranking Based On Selection :21
planktonic nutrient cycles
food webs
diversity
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
64
33
0.516
* Total i10 IndexRankings
Ranking Based On Selection :22
environmental policy
environmental psychology
participation
learning
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
63
54
0.857
* Total i10 IndexRankings
Ranking Based On Selection :23
biodiversity conservation
climate change
insect ecology
habitat loss
Lepidoptera
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
53
0.855
* Total i10 IndexRankings
Ranking Based On Selection :24
aquatic ecology
freshwater ecology
environmental assessment
bioassessment
predictive models
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
45
0.750
* Total i10 IndexRankings
Ranking Based On Selection :25
nutrients
eutrophication
agriculture
biogeochemistry
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
59
35
0.593
Timothy R. Carter
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
139
77
0.554
Risto K. Heikkinen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
113
88
0.779
Conservation biology
Climate change
Biodiversity
Species distribution modelling
Mikko Kuussaari
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
105
85
0.810
Conservation biology
butterfly ecology
agroecology
Martin Forsius
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
105
48
0.457
biogeochemistry
climate change
air pollution
lakes
catchments
Harri Kuosa
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
103
45
0.437
Marine ecology
Baltic Sea
Eutrophication
Microbes
Pirkko Kortelainen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
101
72
0.713
Biogeochemical cycles
climate change
land use
atmospheric deposition
Juha Grönroos
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
96
54
0.563
Agri-environmental issues
Life cycle assessment
Mikael Hildén
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
96
51
0.531
Policy analysis and evaluation
natural resource management
programme assessment
Seppo Hellsten
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
91
43
0.473
Anke Kremp
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
80
64
0.800
Matti Verta
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
78
19
0.244
Jari Lyytimäki
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
77
58
0.753
Environmental studies
social science
science communication
sustainability indicators
Jyri Seppälä
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
77
42
0.545
Climate change
environmental impact assessment
resource efficiency
Raimo Virkkala
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
76
54
0.711
Biodiversity conservation
Bird ecology
Boreal
Climate change
Markku Viitasalo
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
73
50
0.685
Biodiversity
Baltic Sea
Pelagic and benthic ecology
Marine spatial planning
Conservation ecology
Anna-Stiina Heiskanen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
70
46
0.657
Ecosystem based management and assessment of aquatic ecosystems
Marine and Water Policies
aquatic
Jaakko Mannio
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
69
25
0.362
contaminants
emerging pollutants
aquatic environment
regional limnology
Kari K. Lehtonen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
67
53
0.791
marine biology
ecotoxicology
ecophysiology
biological effects
hazardous substances
Katri Rankinen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
35
0.530
nutrient load
modelling
catchment
Ahti Lepistö
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
66
31
0.470
Catchment modelling
biogeochemical cycles
nitrogen
carbon
hydrology
Timo Tamminen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
64
33
0.516
Riikka Paloniemi
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
63
54
0.857
environmental policy
environmental psychology
participation
learning
Juha Pöyry
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
62
53
0.855
biodiversity conservation
climate change
insect ecology
habitat loss
Lepidoptera
Jukka Aroviita
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
60
45
0.750
aquatic ecology
freshwater ecology
environmental assessment
bioassessment
predictive models
Petri Ekholm
Finnish Environment Institute SYKE
Bhubaneswar, Finland
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
59
35
0.593
nutrients
eutrophication
agriculture
biogeochemistry