Citation Rankings
Highly Cited Researchers
Finnish Environment Institute SYKE Highly Cited Researchers Citation Rankings (Sort by last 6 years Citation Index) 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: Scientists Last 6 years Citation Index, Universities Total Citations Rankings 2025 and Universities Last 6 Years Citations Rankings 2025
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :1
Climate
Environment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,016
17,553
0.366
* Last 6 Years 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
22,224
10,308
0.464
* Last 6 Years 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
16,458
7,055
0.429
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :4
Climate change
environmental impact assessment
resource efficiency
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,212
6,029
0.654
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :5
Conservation biology
butterfly ecology
agroecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,054
5,975
0.372
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :6
Urban development
Sustainability
Sustainable transport
Health Impact Assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,182
4,632
0.749
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :7
Biodiversity monitoring
Ecosystem functioning
Ecosystem services
Earth Observation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,880
4,122
0.701
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :8
deliberative environmental politics
environmental conflict resolution
participatory integrated appraisals
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,341
3,808
0.713
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :9
biogeochemistry
climate change
air pollution
lakes
catchments
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,706
3,658
0.377
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
biodiversity conservation
climate change
insect ecology
habitat loss
Lepidoptera
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,330
3,333
0.455
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,775
3,093
0.648
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :12
Ecosystem services
Green infrastructure
Sustainable urban development
Spatial analysis
Citizen Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,167
3,058
0.734
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :13
Microplastics
Engineered nanoparticles
Aerosol particles
Analytical chemistry
Ecotoxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,164
2,992
0.485
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :14
monitoring
statistics
machine learning
knowledge production
sustainable development goals
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,303
2,755
0.834
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :15
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,468
2,679
0.772
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :16
Ecosystem based management and assessment of aquatic ecosystems
Marine and Water Policies
aquatic
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,250
2,629
0.363
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :17
multi-locality
second homes
circular economy
sustainability transitions
nature-based integration
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,567
2,595
0.728
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :18
Environmental studies
social science
science communication
sustainability indicators
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,494
2,577
0.573
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :19
Policy analysis and evaluation
natural resource management
programme assessment
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,457
2,556
0.468
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :20
Biodiversity conservation
Bird ecology
Boreal
Climate change
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,109
2,531
0.356
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :21
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,007
2,453
0.816
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :22
aquatic macrophytes
monitoring
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,842
2,413
0.498
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :23
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,600
2,299
0.639
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :24
Phytoplankton Ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,347
2,296
0.528
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :25
air pollution effects on ecosystems
climate change
monitoring
research infrastructures
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,209
2,217
0.426
* Last 6 Years Citation Counts Rankings
Rankings
14,459
62
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
48,016
17,553
0.366
* Last 6 Years Citation Counts Rankings
Rankings
32,475
133
2
Ranking Based On Selection: 2
Pirkko Kortelainen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,224
10,308
0.464
Biogeochemical cycles
climate change
land use
atmospheric deposition
* Last 6 Years Citation Counts Rankings
Rankings
56,053
273
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
16,458
7,055
0.429
Conservation biology
Climate change
Biodiversity
Species distribution modelling
* Last 6 Years Citation Counts Rankings
Rankings
69,424
352
4
Ranking Based On Selection: 4
Jyri Seppälä
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,212
6,029
0.654
Climate change
environmental impact assessment
resource efficiency
* Last 6 Years Citation Counts Rankings
Rankings
70,255
355
5
Ranking Based On Selection: 5
Mikko Kuussaari
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16,054
5,975
0.372
Conservation biology
butterfly ecology
agroecology
* Last 6 Years Citation Counts Rankings
Rankings
97,316
528
6
Ranking Based On Selection: 6
Marko Tainio
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,182
4,632
0.749
Urban development
Sustainability
Sustainable transport
Health Impact Assessment
* Last 6 Years Citation Counts Rankings
Rankings
112,521
638
7
Ranking Based On Selection: 7
Petteri Vihervaara
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,880
4,122
0.701
Biodiversity monitoring
Ecosystem functioning
Ecosystem services
Earth Observation
* Last 6 Years Citation Counts Rankings
Rankings
123,652
710
8
Ranking Based On Selection: 8
Heli Saarikoski
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,341
3,808
0.713
deliberative environmental politics
environmental conflict resolution
participatory integrated appraisals
* Last 6 Years Citation Counts Rankings
Rankings
129,668
745
9
Ranking Based On Selection: 9
Martin Forsius
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,706
3,658
0.377
biogeochemistry
climate change
air pollution
lakes
catchments
* Last 6 Years Citation Counts Rankings
Rankings
144,642
840
10
Ranking Based On Selection: 10
Juha Pöyry
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,330
3,333
0.455
biodiversity conservation
climate change
insect ecology
habitat loss
Lepidoptera
* Last 6 Years Citation Counts Rankings
Rankings
157,575
920
11
Ranking Based On Selection: 11
Riina Antikainen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,775
3,093
0.648
* Last 6 Years Citation Counts Rankings
Rankings
159,575
939
12
Ranking Based On Selection: 12
Leena Kopperoinen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,167
3,058
0.734
Ecosystem services
Green infrastructure
Sustainable urban development
Spatial analysis
Citizen Science
* Last 6 Years Citation Counts Rankings
Rankings
163,512
967
13
Ranking Based On Selection: 13
Markus Sillanpää
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,164
2,992
0.485
Microplastics
Engineered nanoparticles
Aerosol particles
Analytical chemistry
Ecotoxicology
* Last 6 Years Citation Counts Rankings
Rankings
179,449
1,086
14
Ranking Based On Selection: 14
Kristian Meissner
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,303
2,755
0.834
monitoring
statistics
machine learning
knowledge production
sustainable development goals
* Last 6 Years Citation Counts Rankings
Rankings
184,957
1,117
15
Ranking Based On Selection: 15
Laura Saikku
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,468
2,679
0.772
* Last 6 Years Citation Counts Rankings
Rankings
188,726
1,141
16
Ranking Based On Selection: 16
Anna-Stiina Heiskanen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,250
2,629
0.363
Ecosystem based management and assessment of aquatic ecosystems
Marine and Water Policies
aquatic
* Last 6 Years Citation Counts Rankings
Rankings
191,362
1,157
17
Ranking Based On Selection: 17
Kati Pitkänen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,567
2,595
0.728
multi-locality
second homes
circular economy
sustainability transitions
nature-based integration
* Last 6 Years Citation Counts Rankings
Rankings
192,737
1,168
18
Ranking Based On Selection: 18
Jari Lyytimäki
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,494
2,577
0.573
Environmental studies
social science
science communication
sustainability indicators
* Last 6 Years Citation Counts Rankings
Rankings
194,462
1,185
19
Ranking Based On Selection: 19
Mikael Hildén
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,457
2,556
0.468
Policy analysis and evaluation
natural resource management
programme assessment
* Last 6 Years Citation Counts Rankings
Rankings
196,491
1,203
20
Ranking Based On Selection: 20
Raimo Virkkala
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,109
2,531
0.356
Biodiversity conservation
Bird ecology
Boreal
Climate change
* Last 6 Years Citation Counts Rankings
Rankings
203,270
1,241
21
Ranking Based On Selection: 21
David Lazarevic
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,007
2,453
0.816
* Last 6 Years Citation Counts Rankings
Rankings
206,758
1,259
22
Ranking Based On Selection: 22
Seppo Hellsten
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,842
2,413
0.498
* Last 6 Years Citation Counts Rankings
Rankings
217,584
1,328
23
Ranking Based On Selection: 23
Vivi Fleming-Lehtinen
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,600
2,299
0.639
* Last 6 Years Citation Counts Rankings
Rankings
217,878
1,330
24
Ranking Based On Selection: 24
Anke Kremp
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,347
2,296
0.528
* Last 6 Years Citation Counts Rankings
Rankings
225,853
1,372
25
Ranking Based On Selection: 25
Jussi Vuorenmaa
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,209
2,217
0.426
air pollution effects on ecosystems
climate change
monitoring
research infrastructures