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Researcher · University of Oslo · Norway

Dag O. Hessen

Dag O. Hessen publishes mostly in Environmental Chemistry, Ecology and Oceanography, on topics such as Aquatic Ecosystems and Phytoplankton Dynamics, Marine and coastal ecosystems and Biocrusts and Microbial Ecology.

ORCID 0000-0002-0154-7847 OpenAlex
World rank
#92,606
of 1,633,909 ranked researchers
Rank in Norway
#437
of 6,482
Works
61
Citations
461
Citations per work
7.6

What does Dag O. Hessen research?

Environmental Chemistry: 17.7%Ecology: 13.9%Oceanography: 12.7%Global and Planetary Change: 7.6%other fields: 48.1%18%top field
Environmental Chemistry17.7%Ecology13.9%Oceanography12.7%Global and Planetary Change7.6%other fields48.1%

Shares of their own output, by the field each of their topics belongs to. The grey slice is everything not listed.

  1. 1Environmental Chemistry18% of their works
  2. 2Ecology14% of their works
  3. 3Oceanography13% of their works
  4. 4Global and Planetary Change8% of their works
  5. 5Atmospheric Science5% of their works
  6. 6Water Science and Technology4% of their works

Research topics

Which keywords describe Dag O. Hessen's research?

The keywords of their largest research topics: Climate Change, Eutrophication, Harmful Algal Blooms, Cyanobacteria, Water Quality, Freshwater Ecosystems, Nutrient Control and Dissolved Organic Matter.

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 22 words, with their numbers
  1. Climate Change265 topics
  2. Eutrophication223 topics
  3. Harmful Algal Blooms192 topics
  4. Cyanobacteria142 topics
  5. Water Quality142 topics
  6. Freshwater Ecosystems111 topic
  7. Nutrient Control111 topic
  8. Dissolved Organic Matter81 topic
  9. Oceanic Carbon Cycle81 topic
  10. Invasive Species52 topics
  11. Biological Soil Crusts31 topic
  12. Conservation Challenges31 topic
  13. Freshwater Biodiversity31 topic
  14. Hyporheic Zone31 topic
  15. Nutrient Cycling31 topic
  16. UV Protection31 topic
  17. Ecosystem Engineering21 topic
  18. Food Security21 topic
  19. Freshwater Mussels21 topic
  20. Glacial Cycles21 topic
  21. Nutrition21 topic
  22. Paleoclimatology21 topic

Where does Dag O. Hessen work?

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

How many publications and citations does Dag O. Hessen have?

Science Explorer counts 61 works and 461 citations for Dag O. Hessen, ranking #92,606 of 1,633,909 researchers worldwide on the composite 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 are in the interactive view on the map. Is this your page? Request a correction or removal.