Citation Rankings
Highly Cited Researchers
Finnish Environment Institute SYKE Highly Cited Researchers CitationNatural Sciences / Biological Science 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
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 :2
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 :3
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 :4
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 :5
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 :6
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 :7
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 :8
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 :9
aquatic ecology
freshwater ecology
environmental assessment
bioassessment
predictive models
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,915
1,990
0.683
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :10
Butterfly monitoring
agroecology
conservation biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,770
1,963
0.521
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :11
environmental policy
biodiversity
ecosystem services
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,127
1,949
0.623
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :12
biodiversity conservation
ecological restoration
forest ecology
insect ecology
ants
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,825
1,299
0.223
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :13
conservation biology
plant ecology
lichens
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,836
1,190
0.310
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :14
Aquatic ecology
Biodiversity
Biological monitoring
Diatoms
Spatial patterns
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,129
1,008
0.893
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :15
biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,872
951
0.331
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :16
biodiversity
ecology
evolutionary ecology
monitoring
birds
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,344
815
0.606
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :17
limnology
ecotoxicology
environmental risk assessment
river basin management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,500
807
0.323
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :18
ecotoxicology
toxicity tests
effect assessment
biochemical toxicology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,094
497
0.237
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :19
Plankton food web modelling
Experimental plankton ecology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,293
436
0.190
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :20
biodiversity data and modelling
trait-based approaches
movement ecology
fungal ecology
environmental DNA
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
648
406
0.627
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :21
Freshwater Monitoring
Water Quality
Ecological status
Chemical Status
Transboundary Waters
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
918
293
0.319
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :22
conservation biology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
626
268
0.428
* Last 6 Years Citation Counts Rankings
Ranking Based On Selection :23
Ecology
hydrology
macronutrients
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
190
128
0.674
* Last 6 Years Citation Counts Rankings
Rankings
56,053
273
3
Ranking Based On Selection: 1
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
70,255
355
5
Ranking Based On Selection: 2
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
112,521
638
7
Ranking Based On Selection: 3
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
144,642
840
10
Ranking Based On Selection: 4
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
159,575
939
12
Ranking Based On Selection: 5
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
196,491
1,203
20
Ranking Based On Selection: 6
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
206,758
1,259
22
Ranking Based On Selection: 7
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
217,878
1,330
24
Ranking Based On Selection: 8
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
252,172
1,569
29
Ranking Based On Selection: 9
Jukka Aroviita
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,915
1,990
0.683
aquatic ecology
freshwater ecology
environmental assessment
bioassessment
predictive models
* Last 6 Years Citation Counts Rankings
Rankings
255,597
1,594
31
Ranking Based On Selection: 10
Janne Heliölä
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,770
1,963
0.521
Butterfly monitoring
agroecology
conservation biology
* Last 6 Years Citation Counts Rankings
Rankings
257,416
1,606
32
Ranking Based On Selection: 11
Eeva Furman
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,127
1,949
0.623
environmental policy
biodiversity
ecosystem services
* Last 6 Years Citation Counts Rankings
Rankings
373,457
2,350
50
Ranking Based On Selection: 12
Pekka Punttila
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,825
1,299
0.223
biodiversity conservation
ecological restoration
forest ecology
insect ecology
ants
* Last 6 Years Citation Counts Rankings
Rankings
401,629
2,536
56
Ranking Based On Selection: 13
Juha Pykälä
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,836
1,190
0.310
conservation biology
plant ecology
lichens
* Last 6 Years Citation Counts Rankings
Rankings
457,582
2,900
62
Ranking Based On Selection: 14
Annika Vilmi
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,129
1,008
0.893
Aquatic ecology
Biodiversity
Biological monitoring
Diatoms
Spatial patterns
* Last 6 Years Citation Counts Rankings
Rankings
477,474
3,028
67
Ranking Based On Selection: 15
Pekka Vanhala
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,872
951
0.331
* Last 6 Years Citation Counts Rankings
Rankings
532,348
3,368
73
Ranking Based On Selection: 16
Päivi Sirkiä
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,344
815
0.606
biodiversity
ecology
evolutionary ecology
monitoring
birds
* Last 6 Years Citation Counts Rankings
Rankings
535,713
3,390
74
Ranking Based On Selection: 17
Kari-Matti Vuori
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,500
807
0.323
limnology
ecotoxicology
environmental risk assessment
river basin management
* Last 6 Years Citation Counts Rankings
Rankings
711,636
4,441
101
Ranking Based On Selection: 18
Eija Schultz
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,094
497
0.237
ecotoxicology
toxicity tests
effect assessment
biochemical toxicology
* Last 6 Years Citation Counts Rankings
Rankings
762,561
4,757
110
Ranking Based On Selection: 19
Risto Lignell
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,293
436
0.190
Plankton food web modelling
Experimental plankton ecology
* Last 6 Years Citation Counts Rankings
Rankings
792,026
4,940
115
Ranking Based On Selection: 20
Veera Norros
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
648
406
0.627
biodiversity data and modelling
trait-based approaches
movement ecology
fungal ecology
environmental DNA
* Last 6 Years Citation Counts Rankings
Rankings
931,323
5,914
134
Ranking Based On Selection: 21
Sari Mitikka (Antikainen)
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
918
293
0.319
Freshwater Monitoring
Water Quality
Ecological status
Chemical Status
Transboundary Waters
* Last 6 Years Citation Counts Rankings
Rankings
971,091
6,180
138
Ranking Based On Selection: 22
Terhi Ryttäri
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
626
268
0.428
* Last 6 Years Citation Counts Rankings
Rankings
1,311,108
8,240
151
Ranking Based On Selection: 23
José Enrique Cano Bernal
Finnish Environment Institute SYKE
Bhubaneswar, Finland
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
190
128
0.674
Ecology
hydrology
macronutrients