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Researcher · University of Oslo · Norway

Dag Oystein Hjermann

Dag Oystein Hjermann publishes mostly in Global and Planetary Change, Ecology and Oceanography, on topics such as Marine and fisheries research, Marine Bivalve and Aquaculture Studies and Fish Ecology and Management Studies.

OpenAlex
World rank
#1,121,501
of 7,710,434 ranked researchers
Rank in Norway
#7,115
of 33,005
Works
104
Citations
2.7k
Citations per work
25.7
h-index
30
i10-index 43Top 11% in Global and Planetary Change
Dag Oystein Hjermann

What does Dag Oystein Hjermann research?

Dag Oystein Hjermann's work is mostly in Environmental Science (57%), Earth and Planetary Sciences (9%), Agricultural and Biological Sciences (3%).

Physical Sciences: 68 works · 65.5% of their workEnvironmental Science: 59 works · 56.6% of their workGlobal and Planetary Change: 24 works · 23.4% of their workEcology: 18 works · 17.4% of their workHealth, Toxicology and Mutagenesis: 8 works · 8.1% of their workNature and Landscape Conservation: 8 works · 7.7% of their workEarth and Planetary Sciences: 9 works · 8.9% of their workOceanography: 9 works · 8.9% of their workEverything else: 33 works · 31.5% of their workLife Sciences: 3 works · 3.0% of their workAgricultural and Biological Sciences: 3 works · 3.0% of their workFood Science: 3 works · 3.0% of their workTHEIR WORKDag OysteinHjermann104works
Life Sciences3%Physical Sciences66%

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
    1. Environmental Science5956.6%
    2. Earth and Planetary Sciences98.9%
  2. Everything else3331.5%
    1. Agricultural and Biological Sciences33.0%
  1. 1Global and Planetary Change23% of their works
  2. 2Ecology17% of their works
  3. 3Oceanography9% of their works
  4. 4Health, Toxicology and Mutagenesis8% of their works
  5. 5Nature and Landscape Conservation8% of their works
  6. 6Food Science3% of their works

Research topics

Which keywords describe Dag Oystein Hjermann's research?

The keywords of their largest research topics: Climate Change, Fisheries Sustainability, Trophic Cascades, Food Security, Ecosystem Management, Marine Fisheries, Aquaculture and Oyster Reefs.

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.

All 20 words, with their numbers
  1. Climate Change584 topics
  2. Fisheries Sustainability452 topics
  3. Trophic Cascades382 topics
  4. Food Security323 topics
  5. Ecosystem Management301 topic
  6. Marine Fisheries301 topic
  7. Aquaculture191 topic
  8. Oyster Reefs191 topic
  9. Conservation Challenges151 topic
  10. Freshwater Biodiversity151 topic
  11. Brominated Flame Retardants91 topic
  12. Polycyclic Aromatic Hydrocarbons91 topic
  13. Animal Movement81 topic
  14. Occupancy Rates81 topic
  15. Arctic Indigenous Peoples71 topic
  16. Stable Isotopes71 topic
  17. Traditional Knowledge71 topic
  18. Trophic Position71 topic
  19. Functional Foods61 topic
  20. Nutrition61 topic

Where does Dag Oystein Hjermann work?

Dag Oystein Hjermann's main affiliation in the publication record is University of Oslo, Norway.

How many publications and citations does Dag Oystein Hjermann have?

OpenAlex counts 104 works and 2,675 citations for Dag Oystein Hjermann, an h-index of 30, ranking #1,121,501 of 7,710,434 researchers worldwide on the quality score.

Ranked on field-normalised 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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