Citation Rankings
Highly Cited Researchers
Highly Cited Researchers 163 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Climate
Environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,584
15,862
0.320
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Biogeochemical cycles
climate change
land use
atmospheric deposition
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,122
9,503
0.411
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Conservation biology
Climate change
Biodiversity
Species distribution modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,134
6,560
0.383
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Conservation biology
butterfly ecology
agroecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,628
5,538
0.333
* Total Citation Counts Rankings
Ranking Based On Selection: 5
biogeochemistry
climate change
air pollution
lakes
catchments
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,010
3,441
0.344
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Climate change
environmental impact assessment
resource efficiency
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,894
6,021
0.609
* Total Citation Counts Rankings
Ranking Based On Selection: 7
biodiversity conservation
climate change
insect ecology
habitat loss
Lepidoptera
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,645
3,155
0.413
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Ecosystem based management and assessment of aquatic ecosystems
Marine and Water Policies
aquatic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,497
2,386
0.318
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Biodiversity conservation
Bird ecology
Boreal
Climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,372
2,384
0.323
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Marine ecology
Baltic Sea
Eutrophication
Microbes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,024
1,826
0.260
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Urban development
Sustainability
Sustainable transport
Health Impact Assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,786
4,782
0.705
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Microplastics
Engineered nanoparticles
Aerosol particles
Analytical chemistry
Ecotoxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,462
2,916
0.451
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Biodiversity monitoring
Ecosystem functioning
Ecosystem services
Earth Observation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,317
3,979
0.630
* Total Citation Counts Rankings
Ranking Based On Selection: 14
biodiversity conservation
ecological restoration
forest ecology
insect ecology
ants
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,003
1,254
0.209
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Biodiversity
Baltic Sea
Pelagic and benthic ecology
Marine spatial planning
Conservation ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,937
1,776
0.299
* Total Citation Counts Rankings
Ranking Based On Selection: 16
deliberative environmental politics
environmental conflict resolution
participatory integrated appraisals
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,666
3,511
0.620
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Policy analysis and evaluation
natural resource management
programme assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,611
2,701
0.481
* Total Citation Counts Rankings
Ranking Based On Selection: 18
air pollution effects on ecosystems
climate change
monitoring
research infrastructures
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,377
2,050
0.381
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Catchment modelling
biogeochemical cycles
nitrogen
carbon
hydrology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,315
1,797
0.338
* Total Citation Counts Rankings
Ranking Based On Selection: 20
aquatic macrophytes
monitoring
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,103
2,309
0.452
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,054
2,956
0.585
* Total Citation Counts Rankings
Ranking Based On Selection: 22
contaminants
emerging pollutants
aquatic environment
regional limnology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,987
865
0.173
* Total Citation Counts Rankings
Ranking Based On Selection: 23
planktonic nutrient cycles
food webs
diversity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,914
1,549
0.315
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Agri-environmental issues
Life cycle assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,898
2,078
0.424
* Total Citation Counts Rankings
Ranking Based On Selection: 25
marine sciences
Physical Oceanography
marine meteorology
Baltic Sea physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,869
1,540
0.316
* Total Citation Counts Rankings
Rankings
10,434
45
1
Ranking Based On Selection: 1
Timothy R. Carter
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
49,584
15,862
0.320
* Total Citation Counts Rankings
Rankings
33,913
159
2
Ranking Based On Selection: 2
Pirkko Kortelainen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23,122
9,503
0.411
Biogeochemical cycles
climate change
land use
atmospheric deposition
* Total Citation Counts Rankings
Rankings
51,298
255
3
Ranking Based On Selection: 3
Risto K. Heikkinen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,134
6,560
0.383
Conservation biology
Climate change
Biodiversity
Species distribution modelling
* Total Citation Counts Rankings
Rankings
53,414
266
4
Ranking Based On Selection: 4
Mikko Kuussaari
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,628
5,538
0.333
Conservation biology
butterfly ecology
agroecology
* Total Citation Counts Rankings
Rankings
100,648
564
5
Ranking Based On Selection: 5
Martin Forsius
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
10,010
3,441
0.344
biogeochemistry
climate change
air pollution
lakes
catchments
* Total Citation Counts Rankings
Rankings
101,980
575
6
Ranking Based On Selection: 6
Jyri Seppälä
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,894
6,021
0.609
Climate change
environmental impact assessment
resource efficiency
* Total Citation Counts Rankings
Rankings
136,178
781
7
Ranking Based On Selection: 7
Juha Pöyry
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,645
3,155
0.413
biodiversity conservation
climate change
insect ecology
habitat loss
Lepidoptera
* Total Citation Counts Rankings
Rankings
139,047
798
8
Ranking Based On Selection: 8
Anna-Stiina Heiskanen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,497
2,386
0.318
Ecosystem based management and assessment of aquatic ecosystems
Marine and Water Policies
aquatic
* Total Citation Counts Rankings
Rankings
141,581
815
9
Ranking Based On Selection: 9
Raimo Virkkala
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,372
2,384
0.323
Biodiversity conservation
Bird ecology
Boreal
Climate change
* Total Citation Counts Rankings
Rankings
148,976
853
10
Ranking Based On Selection: 10
Harri Kuosa
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,024
1,826
0.260
Marine ecology
Baltic Sea
Eutrophication
Microbes
* Total Citation Counts Rankings
Rankings
154,434
887
11
Ranking Based On Selection: 11
Marko Tainio
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,786
4,782
0.705
Urban development
Sustainability
Sustainable transport
Health Impact Assessment
* Total Citation Counts Rankings
Rankings
162,412
934
12
Ranking Based On Selection: 12
Markus Sillanpää
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,462
2,916
0.451
Microplastics
Engineered nanoparticles
Aerosol particles
Analytical chemistry
Ecotoxicology
* Total Citation Counts Rankings
Rankings
166,280
965
13
Ranking Based On Selection: 13
Petteri Vihervaara
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,317
3,979
0.630
Biodiversity monitoring
Ecosystem functioning
Ecosystem services
Earth Observation
* Total Citation Counts Rankings
Rankings
174,946
1,020
14
Ranking Based On Selection: 14
Pekka Punttila
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,003
1,254
0.209
biodiversity conservation
ecological restoration
forest ecology
insect ecology
ants
* Total Citation Counts Rankings
Rankings
176,913
1,037
15
Ranking Based On Selection: 15
Markku Viitasalo
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,937
1,776
0.299
Biodiversity
Baltic Sea
Pelagic and benthic ecology
Marine spatial planning
Conservation ecology
* Total Citation Counts Rankings
Rankings
185,324
1,092
16
Ranking Based On Selection: 16
Heli Saarikoski
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,666
3,511
0.620
deliberative environmental politics
environmental conflict resolution
participatory integrated appraisals
* Total Citation Counts Rankings
Rankings
187,069
1,106
17
Ranking Based On Selection: 17
Mikael Hildén
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,611
2,701
0.481
Policy analysis and evaluation
natural resource management
programme assessment
* Total Citation Counts Rankings
Rankings
195,042
1,174
18
Ranking Based On Selection: 18
Jussi Vuorenmaa
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,377
2,050
0.381
air pollution effects on ecosystems
climate change
monitoring
research infrastructures
* Total Citation Counts Rankings
Rankings
197,251
1,186
19
Ranking Based On Selection: 19
Ahti Lepistö
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,315
1,797
0.338
Catchment modelling
biogeochemical cycles
nitrogen
carbon
hydrology
* Total Citation Counts Rankings
Rankings
205,249
1,245
20
Ranking Based On Selection: 20
Seppo Hellsten
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,103
2,309
0.452
* Total Citation Counts Rankings
Rankings
207,206
1,256
21
Ranking Based On Selection: 21
Riina Antikainen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,054
2,956
0.585
* Total Citation Counts Rankings
Rankings
209,918
1,268
22
Ranking Based On Selection: 22
Jaakko Mannio
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,987
865
0.173
contaminants
emerging pollutants
aquatic environment
regional limnology
* Total Citation Counts Rankings
Rankings
212,862
1,284
23
Ranking Based On Selection: 23
Timo Tamminen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,914
1,549
0.315
* Total Citation Counts Rankings
Rankings
213,507
1,290
24
Ranking Based On Selection: 24
Juha Grönroos
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,898
2,078
0.424
Agri-environmental issues
Life cycle assessment
* Total Citation Counts Rankings
Rankings
214,773
1,295
25
Ranking Based On Selection: 25
Kai Myrberg
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,869
1,540
0.316
marine sciences
Physical Oceanography
marine meteorology
Baltic Sea physics