Total 2,403,032 scientists, country 221, and institutions 24,466 are evaluated in the Productivity Rankings, an exclusive service provided by AD Scientific Index. This ranking measures and highlights the scientific productivity of researchers based on the i10 index (number of publications with at least 10 citations). This system identifies highly productive scientists across disciplines, institutions, and regions, contributing to the development of evidence-based academic policies and effective incentive mechanisms. The rankings include global, regional, and institutional analyses, along with specialized rankings such as Scientists' Last 6 Years' i10 Index and Universities' i10 Index Rankings 2025. With Premium Membership, you can:
- Gain full access to detailed comparisons and advanced analytics,
- Objectively evaluate your academic productivity,
- Make strategic, data-driven decisions to enhance performance.
* Total i10 IndexRankings
Ranking Based On Selection: 26
![Stein Ivar Johnsen](https://cdn.adscientificindex.com/pictures/ab/4442746.jpg)
Freshwater ecology
Freshwater crayfish
Freshwater fish
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
12
0.444
* Total i10 IndexRankings
Ranking Based On Selection: 27
![André Frainer](https://cdn.adscientificindex.com/pictures/de/4442589.jpg)
Community ecology
ecosystem ecology
trait-based ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
26
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 28
![Rachel Paterson](https://cdn.adscientificindex.com/pictures/72/4442725.jpg)
Ecological parasitology
invasive species
freshwater ecology
conservation science
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
18
0.692
* Total i10 IndexRankings
Ranking Based On Selection: 29
![Inger Maren Rivrud](https://cdn.adscientificindex.com/pictures/ea/4442661.jpg)
Behavioural ecology
Spatial ecology
Statistical ecology
Applied ecology
Evolutionary ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
22
0.880
* Total i10 IndexRankings
Ranking Based On Selection: 30
![Anders Endrestøl](https://cdn.adscientificindex.com/pictures/a7/4442587.jpg)
Entomology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
9
0.375
* Total i10 IndexRankings
Ranking Based On Selection: 31
![Bernardo Brandão Niebuhr](https://cdn.adscientificindex.com/pictures/68/4442599.jpg)
Movement ecology
Landscape ecology
Ecological modeling
Theoretical ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
20
1.000
* Total i10 IndexRankings
Ranking Based On Selection: 32
![Jens Åström](https://cdn.adscientificindex.com/pictures/9b/4442670.jpg)
Spatial ecology
community ecology
pollination ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
16
0.800
* Total i10 IndexRankings
Ranking Based On Selection: 33
![Diego Pavón Jordán](https://cdn.adscientificindex.com/pictures/1c/4442625.jpg)
Wetland ecology
waterbirds
impact of renewable energy (and powerlines) on biodiversity
global change
modelling
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
15
0.789
* Total i10 IndexRankings
Ranking Based On Selection: 34
![Ingeborg Palm Helland](https://cdn.adscientificindex.com/pictures/94/4442660.jpg)
Biology
Ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
16
0.889
* Total i10 IndexRankings
Ranking Based On Selection: 35
![Ditte Katrine Hendrichsen](https://cdn.adscientificindex.com/pictures/55/4442626.jpg)
Population dynamics
arctic ecology
alien invasive species
climate change ecology
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
10
0.588
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* Total i10 IndexRankings
Ranking Based On Selection: 36
![Anders Foldvik](/user/assets/images/profile/no-profile-photo.png)
ecology.
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
9
0.563
* Total i10 IndexRankings
Ranking Based On Selection: 37
![Simon Jakobsson](https://cdn.adscientificindex.com/pictures/5c/4466952.jpg)
ecology
birds
plants
bats
grasslands
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
13
0.867
Stein Ivar Johnsen
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
27
12
0.444
Freshwater ecology
Freshwater crayfish
Freshwater fish
André Frainer
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
26
1.000
Community ecology
ecosystem ecology
trait-based ecology
Rachel Paterson
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
26
18
0.692
Ecological parasitology
invasive species
freshwater ecology
conservation science
Inger Maren Rivrud
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
25
22
0.880
Behavioural ecology
Spatial ecology
Statistical ecology
Applied ecology
Evolutionary ecology
Anders Endrestøl
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
24
9
0.375
Bernardo Brandão Niebuhr
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
20
1.000
Movement ecology
Landscape ecology
Ecological modeling
Theoretical ecology
Jens Åström
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
20
16
0.800
Spatial ecology
community ecology
pollination ecology
Diego Pavón Jordán
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
19
15
0.789
Wetland ecology
waterbirds
impact of renewable energy (and powerlines) on biodiversity
global change
modelling
Ingeborg Palm Helland
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
18
16
0.889
Ditte Katrine Hendrichsen
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
17
10
0.588
Population dynamics
arctic ecology
alien invasive species
climate change ecology
Enroll all your faculty members with discounted institutional membership to showcase your institution's academic strength to the world in the best way possible – join now and achieve results fast!
Anders Foldvik
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
16
9
0.563
Simon Jakobsson
Norwegian Institute for Nature Research
Trondheim, Norway
i-10 Metrics
Total
Last 6 Years
Last 6 Years / Total
15
13
0.867
ecology
birds
plants
bats
grasslands