World

Citation Rankings
Highly Cited Researchers

Highly Cited Researchers 98 Scientists Citation Rankings - 2025

Discover the world’s highly cited researchers through the AD Scientific Index 2025 Citation Rankings.
These rankings evaluate scientists based on their total and recent citation counts, capturing the breadth and real-time currency of academic recognition. Citation data reveals how widely a scholar’s work is referenced, applied, and extended across diverse disciplines. The rankings are routinely updated to reflect ongoing citation growth, while eliminating distortions from excessive co-authorship and institutional inflation. Premium tools provide access to detailed citation dynamics, unethical citation behavior detection, and field-normalized benchmarking.

Country

Total 98 scientists

List without CERN, Statistical Data etc

Sort by last 6 years Citation Index

* Total Citation Rankings

Rankings

496,405

World Rank

3,480

Country Rank

University

Ranking Based On Selection:

Nina Dehnhard

Norwegian Institute for Nature Research Trondheim, Norway

Engineering & Technology / Marine Sciences and Engineering
animal ecology | marine zoology | conservation biology | population dynamics | phenolog

Citation Metrics

Total

1,817
Last 6 Years

1,366
Last 6 Years / Total

0.752

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* Total Citation Rankings

Rankings

496,470

World Rank

3,482

Country Rank

University

Ranking Based On Selection:

Geir Helge Systad

Norwegian Institute for Nature Research Trondheim, Norway

Natural Sciences / Biological Science
Ecology | Marine ecology | Spatial Managemen

Citation Metrics

Total

1,817
Last 6 Years

888
Last 6 Years / Total

0.489

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* Total Citation Rankings

Rankings

501,832

World Rank

3,522

Country Rank

University

Ranking Based On Selection:

Oddgeir Andersen

Norwegian Institute for Nature Research Trondheim, Norway

Natural Sciences / Biological Science
Ecology | human dimension

Citation Metrics

Total

1,789
Last 6 Years

715
Last 6 Years / Total

0.400

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* Total Citation Rankings

Rankings

509,886

World Rank

3,574

Country Rank

University

Ranking Based On Selection:

Jon Museth

Norwegian Institute for Nature Research Trondheim, Norway

Agriculture & Forestry / Fisheries
Fish ecology | freswater ecology | fish migration

Citation Metrics

Total

1,747
Last 6 Years

682
Last 6 Years / Total

0.390

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* Total Citation Rankings

Rankings

531,251

World Rank

3,721

Country Rank

University

Ranking Based On Selection:

Jens Åström

Norwegian Institute for Nature Research Trondheim, Norway

Natural Sciences / Biological Science
Spatial ecology | community ecology | pollination ecolog

Citation Metrics

Total

1,639
Last 6 Years

1,239
Last 6 Years / Total

0.756

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* Total Citation Rankings

Rankings

583,408

World Rank

4,078

Country Rank

University

Ranking Based On Selection:

Ingeborg Palm Helland

Norwegian Institute for Nature Research Trondheim, Norway

Natural Sciences / Biological Science
Biology | Ecolog

Citation Metrics

Total

1,410
Last 6 Years

729
Last 6 Years / Total

0.517

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* Total Citation Rankings

Rankings

599,504

World Rank

4,195

Country Rank

University

Ranking Based On Selection:

Stein Ivar Johnsen

Norwegian Institute for Nature Research Trondheim, Norway

Natural Sciences / Biological Science
Freshwater ecology | Freshwater fish | Freshwater crayfis

Citation Metrics

Total

1,347
Last 6 Years

762
Last 6 Years / Total

0.566

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* Total Citation Rankings

Rankings

606,972

World Rank

4,241

Country Rank

University

Ranking Based On Selection:

Frank Ole Hanssen

Norwegian Institute for Nature Research Trondheim, Norway

Others
GIS | RS | Geomorphology | Renewables | SMCD

Citation Metrics

Total

1,319
Last 6 Years

682
Last 6 Years / Total

0.517

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* Total Citation Rankings

Rankings

630,968

World Rank

4,390

Country Rank

University

Ranking Based On Selection:

Craig Jackson

Norwegian Institute for Nature Research Trondheim, Norway

Natural Sciences / Biological Science
Ecology and conservatio

Citation Metrics

Total

1,233
Last 6 Years

749
Last 6 Years / Total

0.607

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* Total Citation Rankings

Rankings

669,861

World Rank

4,643

Country Rank

University

Ranking Based On Selection:

Ingerid Hagen

Norwegian Institute for Nature Research Trondheim, Norway

Natural Sciences / Molecular Biology & Genetics
Population genetics | genomics | ecology | conservation genetic

Citation Metrics

Total

1,106
Last 6 Years

721
Last 6 Years / Total

0.652

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* Total Citation Rankings

Rankings

679,811

World Rank

4,694

Country Rank

University

Ranking Based On Selection:

Diego Pavón Jordán

Norwegian Institute for Nature Research Trondheim, Norway

Natural Sciences / Biological Science
Wetland ecology | waterbirds | impact of renewable energy (and powerlines) on biodiversity | global change | modellin