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Researcher · University of Guelph · Canada

Ivan P. O'Halloran

Ivan P. O'Halloran publishes mostly in Environmental Chemistry, Soil Science and Plant Science, on topics such as Soil and Water Nutrient Dynamics, Soil Carbon and Nitrogen Dynamics and Phosphorus and nutrient management.

ORCID 0000-0002-3747-6016 OpenAlex
World rank
#1,814,288
of 7,710,434 ranked researchers
Rank in Canada
#60,454
of 183,316
Works
83
Citations
2.5k
Citations per work
30.0
h-index
30
i10-index 57Top 14% in Environmental Chemistry
Ivan P. O'Halloran

What does Ivan P. O'Halloran research?

Ivan P. O'Halloran's work is mostly in Environmental Science (44%), Agricultural and Biological Sciences (37%).

Physical Sciences: 36 works · 43.7% of their workEnvironmental Science: 36 works · 43.7% of their workEnvironmental Chemistry: 18 works · 22.1% of their workIndustrial and Manufacturing Engineering: 11 works · 13.0% of their workEnvironmental Engineering: 4 works · 4.3% of their workWater Science and Technology: 4 works · 4.3% of their workLife Sciences: 31 works · 36.8% of their workAgricultural and Biological Sciences: 31 works · 36.8% of their workSoil Science: 17 works · 19.9% of their workPlant Science: 14 works · 16.9% of their workEverything else: 16 works · 19.5% of their workTHEIR WORKIvan P.O'Halloran83works
Life Sciences37%Physical Sciences44%

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 Science3643.7%
    1. Agricultural and Biological Sciences3136.8%
  3. Everything else1619.5%
  1. 1Environmental Chemistry22% of their works
  2. 2Soil Science20% of their works
  3. 3Plant Science17% of their works
  4. 4Industrial and Manufacturing Engineering13% of their works
  5. 5Environmental Engineering4% of their works
  6. 6Water Science and Technology4% of their works

Research topics

Which keywords describe Ivan P. O'Halloran's research?

The keywords of their largest research topics: Nutrient Cycling, Hyporheic Zone, Water Quality, Ecosystem Functioning, Climate Change, Phosphorus, Nitrogen Cycle and Soil Carbon Sequestration.

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. Nutrient Cycling572 topics
  2. Hyporheic Zone481 topic
  3. Water Quality481 topic
  4. Ecosystem Functioning392 topics
  5. Climate Change372 topics
  6. Phosphorus322 topics
  7. Nitrogen Cycle301 topic
  8. Soil Carbon Sequestration301 topic
  9. Recovery261 topic
  10. Wastewater261 topic
  11. Land Use Change182 topics
  12. Agricultural Sustainability111 topic
  13. Soil Erosion111 topic
  14. Fungal Diversity91 topic
  15. Mycorrhizal Fungi91 topic
  16. Digital Soil Mapping71 topic
  17. Geostatistics71 topic
  18. Hydrological Modeling71 topic
  19. Water Resources71 topic
  20. Nitrogen61 topic
  21. Root Architecture61 topic

Where does Ivan P. O'Halloran work?

Ivan P. O'Halloran's main affiliation in the publication record is University of Guelph, Canada.

How many publications and citations does Ivan P. O'Halloran have?

OpenAlex counts 83 works and 2,492 citations for Ivan P. O'Halloran, an h-index of 30, ranking #1,814,288 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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