Geir Dahl-Hansen
Geir Dahl-Hansen publishes mostly in Ecology, Oceanography and Nature and Landscape Conservation, on topics such as Ecology and biodiversity studies, Fish Ecology and Management Studies and Marine and coastal ecosystems.
- World rank
- #5,286,864 of 7,710,434 ranked researchers
- Rank in Norway
- #28,147 of 33,005
- Works
- 18
- Citations
- 148
- Citations per work
- 8.2
What does Geir Dahl-Hansen research?
Geir Dahl-Hansen's work is mostly in Environmental Science (51%), Earth and Planetary Sciences (18%).
Their six largest subfields, inside their fields and domains; the grey slice is everything else they publish. The interactive view splits every one of their works down to single topics.
The fields and subfields, with their numbers
- Physical Sciences1269.0%
- Everything else631.0%
- 1Ecology29% of their works
- 2Oceanography11% of their works
- 3Nature and Landscape Conservation9% of their works
- 4Atmospheric Science7% of their works
- 5Health, Toxicology and Mutagenesis7% of their works
- 6Global and Planetary Change7% of their works
Research topics
Which keywords describe Geir Dahl-Hansen's research?
The keywords of their largest research topics: Invasive Species, Climate Change, Ecosystem Engineering, Fisheries Sustainability, Beaver Dams, Habitat Restoration, Conservation Challenges and Freshwater Biodiversity.
- Trophic Position
- Polycyclic Aromatic Hydrocarbons
- Marine Fisheries
- Eutrophication
- Dissolved Organic Matter
- Brominated Flame Retardants
- Freshwater Biodiversity
- Habitat Restoration
- Fisheries Sustainability
- Climate Change
- Invasive Species
- Ecosystem Engineering
- Beaver Dams
- Conservation Challenges
- Biodiversity Loss
- Carbon
- Ecosystem Management
- Freshwater Mussels
- Peatlands
- Stable Isotopes
Size is their works in the topics tagged with each word, from their 8 largest topics. Each links to the topic it comes from most. The words come from the keyword list OpenAlex gives each topic, not from the text of the papers, so a word can appear that none of the papers uses.
All 20 words, with their numbers
- Invasive Species113 topics
- Climate Change104 topics
- Ecosystem Engineering72 topics
- Fisheries Sustainability62 topics
- Beaver Dams51 topic
- Habitat Restoration51 topic
- Conservation Challenges41 topic
- Freshwater Biodiversity41 topic
- Biodiversity Loss21 topic
- Brominated Flame Retardants21 topic
- Carbon21 topic
- Dissolved Organic Matter21 topic
- Ecosystem Management21 topic
- Eutrophication21 topic
- Freshwater Mussels21 topic
- Marine Fisheries21 topic
- Peatlands21 topic
- Polycyclic Aromatic Hydrocarbons21 topic
- Stable Isotopes21 topic
- Trophic Position21 topic
Where does Geir Dahl-Hansen work?
Geir Dahl-Hansen's main affiliation in the publication record is Akvaplan-niva, Norway.
How many publications and citations does Geir Dahl-Hansen have?
OpenAlex counts 18 works and 148 citations for Geir Dahl-Hansen, an h-index of 4, ranking #5,286,864 of 7,710,434 researchers worldwide on the quality score.
Ranked on field-normalised citation excellence (50%), output (30%) and citations (20%). Counts come from OpenAlex author records, which occasionally merge different people who share a name or split one person into several.
Papers, co-authors, who cited this work and researchers on the nearest topics have tabs of their own, above. Is this your page? Claim it with your ORCID iD, or request a correction or removal.
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