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Researcher · Kyoto University · Japan

Hiroshige Koyama

Hiroshige Koyama publishes mostly in Plant Science, Molecular Biology and Ecology, Evolution, Behavior and Systematics, on topics such as Sesquiterpenes and Asteraceae Studies, Botany, Ecology, and Taxonomy Studies and Natural product bioactivities and synthesis.

OpenAlex
World rank
#6,749,077
of 7,710,434 ranked researchers
Rank in Japan
#284,178
of 383,136
Works
21
Citations
161
Citations per work
7.7
h-index
7
i10-index 5Top 70% in Plant Science
Hiroshige Koyama

What does Hiroshige Koyama research?

Hiroshige Koyama's work is mostly in Agricultural and Biological Sciences (45%), Biochemistry, Genetics and Molecular Biology (39%), Social Sciences (4%).

Life Sciences: 18 works · 83.4% of their workAgricultural and Biological Sciences: 9 works · 44.5% of their workPlant Science: 6 works · 27.8% of their workEcology, Evolution, Behavior and Systematics: 3 works · 14.8% of their workInsect Science: 0 works · 1.9% of their workBiochemistry, Genetics and Molecular Biology: 8 works · 38.9% of their workMolecular Biology: 6 works · 27.8% of their workCancer Research: 2 works · 11.1% of their workEverything else: 3 works · 12.9% of their workSocial Sciences: 1 works · 3.7% of their workSocial Sciences: 1 works · 3.7% of their workPolitical Science and International Relations: 1 works · 3.7% of their workTHEIR WORKHiroshige Koyama21works
Life Sciences83%Social Sciences4%

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. Agricultural and Biological Sciences944.5%
    2. Biochemistry, Genetics and Molecular Biology838.9%
  2. Everything else312.9%
    1. Social Sciences13.7%
  1. 1Plant Science28% of their works
  2. 2Molecular Biology28% of their works
  3. 3Ecology, Evolution, Behavior and Systematics15% of their works
  4. 4Cancer Research11% of their works
  5. 5Political Science and International Relations4% of their works
  6. 6Insect Science2% of their works

Research topics

Which keywords describe Hiroshige Koyama's research?

The keywords of their largest research topics: Antioxidant, Biogeography, Apoptosis, Cancer, Phylogeny, NF-?B, Sesquiterpene Lactones and Cyperus.

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 21 words, with their numbers
  1. Antioxidant163 topics
  2. Biogeography123 topics
  3. Apoptosis112 topics
  4. Cancer112 topics
  5. Phylogeny82 topics
  6. NF-?B61 topic
  7. Sesquiterpene Lactones61 topic
  8. Cyperus51 topic
  9. Gesneriaceae51 topic
  10. Saponins51 topic
  11. Triterpenoids51 topic
  12. essential oil51 topic
  13. phylogenetic reconstruction51 topic
  14. Flora41 topic
  15. Pyrrolizidine Alkaloids41 topic
  16. Toxicity41 topic
  17. Vascular Plants41 topic
  18. Apomixis31 topic
  19. Grasses31 topic
  20. Angiosperm Phylogeny21 topic
  21. Flowering Plants21 topic

Where does Hiroshige Koyama work?

Hiroshige Koyama's main affiliation in the publication record is Kyoto University, Japan.

How many publications and citations does Hiroshige Koyama have?

OpenAlex counts 21 works and 161 citations for Hiroshige Koyama, an h-index of 7, ranking #6,749,077 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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