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Researcher · Hokkaido University · Japan

Nobuo Ishiyama

Nobuo Ishiyama publishes mostly in Ecology, Nature and Landscape Conservation and Global and Planetary Change, on topics such as Fish Ecology and Management Studies, Hydrology and Sediment Transport Processes and Aquatic Invertebrate Ecology and Behavior.

ORCID 0000-0001-9912-0237 OpenAlex
World rank
#4,902,053
of 7,710,434 ranked researchers
Rank in Japan
#151,810
of 383,136
Works
79
Citations
803
Citations per work
10.2
h-index
17
i10-index 27Top 31% in Ecology
Nobuo Ishiyama

What does Nobuo Ishiyama research?

Nobuo Ishiyama's work is mostly in Environmental Science (68%), Agricultural and Biological Sciences (3%).

Physical Sciences: 54 works · 68.0% of their workEnvironmental Science: 54 works · 68.0% of their workEcology: 26 works · 33.3% of their workNature and Landscape Conservation: 15 works · 19.6% of their workGlobal and Planetary Change: 5 works · 6.4% of their workWater Science and Technology: 4 works · 5.0% of their workEnvironmental Engineering: 3 works · 3.7% of their workEverything else: 23 works · 29.3% of their workLife Sciences: 2 works · 2.7% of their workAgricultural and Biological Sciences: 2 works · 2.7% of their workSoil Science: 2 works · 2.7% of their workTHEIR WORKNobuo Ishiyama79works
Life Sciences3%Physical Sciences68%

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 Science5468.0%
  2. Everything else2329.3%
    1. Agricultural and Biological Sciences22.7%
  1. 1Ecology33% of their works
  2. 2Nature and Landscape Conservation20% of their works
  3. 3Global and Planetary Change6% of their works
  4. 4Water Science and Technology5% of their works
  5. 5Environmental Engineering4% of their works
  6. 6Soil Science3% of their works

Research topics

Which keywords describe Nobuo Ishiyama's research?

The keywords of their largest research topics: Invasive Species, Climate Change, Freshwater Biodiversity, Conservation Challenges, Flow Regulation, River Restoration, Sediment Transport and Land Use Change.

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. Invasive Species512 topics
  2. Climate Change492 topics
  3. Freshwater Biodiversity492 topics
  4. Conservation Challenges381 topic
  5. Flow Regulation381 topic
  6. River Restoration272 topics
  7. Sediment Transport272 topics
  8. Land Use Change172 topics
  9. Fluvial Processes161 topic
  10. Riparian Vegetation161 topic
  11. Ecosystem Engineering131 topic
  12. Freshwater Mussels131 topic
  13. Hydrological Modeling111 topic
  14. Land Use111 topic
  15. Stream Ecosystems111 topic
  16. Water Resources111 topic
  17. Animal Movement81 topic
  18. Habitat Connectivity81 topic
  19. Occupancy Rates81 topic
  20. Road Ecology81 topic
  21. Agricultural Sustainability61 topic
  22. Soil Erosion61 topic

Where does Nobuo Ishiyama work?

Nobuo Ishiyama's main affiliation in the publication record is Hokkaido University, Japan.

How many publications and citations does Nobuo Ishiyama have?

OpenAlex counts 79 works and 803 citations for Nobuo Ishiyama, an h-index of 17, ranking #4,902,053 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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