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Researcher · National University of Singapore · Singapore

John S. Ascher

John S. Ascher publishes mostly in Ecology, Evolution, Behavior and Systematics, Insect Science and Plant Science, on topics such as Plant and animal studies, Insect and Pesticide Research and Plant Parasitism and Resistance.

ORCID 0000-0002-7887-2461 OpenAlex
World rank
#371,860
of 1,633,909 ranked researchers
Rank in Singapore
#1,491
of 5,048
Works
21
Citations
173
Citations per work
8.2

What does John S. Ascher research?

Ecology, Evolution, Behavior and Systematics: 36.1%Insect Science: 22.2%Plant Science: 19.4%Genetics: 13.9%other fields: 8.4%36%top field
Ecology, Evolution, Behavior and Systematics36.1%Insect Science22.2%Plant Science19.4%Genetics13.9%other fields8.4%

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

  1. 1Ecology, Evolution, Behavior and Systematics36% of their works
  2. 2Insect Science22% of their works
  3. 3Plant Science19% of their works
  4. 4Genetics14% of their works
  5. 5Nature and Landscape Conservation6% of their works
  6. 6Paleontology3% of their works

Research topics

Which keywords describe John S. Ascher's research?

The keywords of their largest research topics: Invasive Species, Biodiversity, Global Change, Habitat Fragmentation, Ecosystem Services, Pollinator Decline, Honey Bees and Neonicotinoids.

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. Invasive Species144 topics
  2. Biodiversity133 topics
  3. Global Change122 topics
  4. Habitat Fragmentation122 topics
  5. Ecosystem Services101 topic
  6. Pollinator Decline101 topic
  7. Honey Bees61 topic
  8. Neonicotinoids61 topic
  9. Plant Hormones51 topic
  10. Strigolactones51 topic
  11. Genomics41 topic
  12. Social Insects41 topic
  13. Molecular Phylogeny32 topics
  14. Amber Fossils21 topic
  15. Conservation21 topic
  16. Ecosystem21 topic
  17. Insect Evolution21 topic
  18. DNA Barcoding11 topic
  19. Earthworms11 topic
  20. Parasitism11 topic
  21. Snails11 topic

Where does John S. Ascher work?

John S. Ascher's main affiliation in the publication record is National University of Singapore, Singapore.

How many publications and citations does John S. Ascher have?

Science Explorer counts 21 works and 173 citations for John S. Ascher, ranking #371,860 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.

Other researchers named John S. Ascher

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