John R. Grehan
Impact in
- Paleontology top 5%
- Evolution and Paleontology Studies
- Scarabaeidae Beetle Taxonomy and Biogeography
- Ecological Modeling top 10%
- Species Distribution and Climate Change
Papers in
- Genetics 44
- Lepidoptera: Biology and Taxonomy 41
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- Plant and animal studies 27
- Co-authors
- Jeffrey H. Schwartz (2 shared papers)Bruce L. Parker (5 shared papers)Michael Heads (2 shared papers)C. A. Stace (1 shared paper)John E. Rawlins (3 shared papers)Brian Patrick (2 shared papers)Paul E. Blom (1 shared paper)Shelby J. Fleischer (1 shared paper)
- Journals
- Zootaxa (11 papers)Journal of Biogeography (6 papers)Journal of Economic Entomology (2 papers)Annals of Carnegie Museum (2 papers)Biological Journal of the Linnean Society (2 papers)
- Partner nations
- United StatesNew ZealandGermany
In The Last Decade
John R. Grehan
63 papers receiving 457 citations
Peers
Comparison fields: 5 of 59
- Paleontology 145
- Ecological Modeling 64
- Ecology, Evolution, Behavior and Systematics 263
- Insect Science 124
- Nature and Landscape Conservation 94
Countries citing papers authored by John R. Grehan
This map shows the geographic impact of John R. Grehan's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by John R. Grehan with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites John R. Grehan more than expected).
Fields of papers citing papers by John R. Grehan
This network shows the impact of papers produced by John R. Grehan. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by John R. Grehan. The network helps show where John R. Grehan may publish in the future.
Co-authors
The 25 scholars most cited alongside John R. Grehan, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.
All Works
Showing the 20 most-cited of 73 papers — load more, or switch the sort, to bring in the rest.
| # | Work | ||
|---|---|---|---|
| 1 | 2001 | 57 | |
| 2 | 2009 | 35 | |
| 3 | 1993 | 27 | |
| 4 | 1985 | 25 | |
| 5 | 1989 | 22 | |
| 6 | 2005 | 22 | |
| 7 | 2001 | 20 | |
| 8 | 1989 | 19 | |
| 9 | 1981 | 15 | |
| 10 | 2021 | 14 | |
| 11 | 1987 | 13 | |
| 12 | 1979 | 13 | |
| 13 | 1993 | 13 | |
| 14 | 2001 | 13 | |
| 15 | 1984 | 12 | |
| 16 | 1991 | 12 | |
| 17 | 1987 | 11 | |
| 18 | 1989 | 10 | |
| 19 | 1990 | 10 | |
| 20 | 2018 | 9 |
About John R. Grehan
John R. Grehan is a scholar working on Genetics, Ecology, Evolution, Behavior and Systematics, Insect Science, Nature and Landscape Conservation and Paleontology, having authored 73 papers that have together received 534 indexed citations. Recurring topics across this work include Lepidoptera: Biology and Taxonomy (41 papers), Plant and animal studies (27 papers), Ecology and Vegetation Dynamics Studies (16 papers), Species Distribution and Climate Change (14 papers), Evolution and Paleontology Studies (11 papers), Insect-Plant Interactions and Control (7 papers), Scarabaeidae Beetle Taxonomy and Biogeography (7 papers) and Forest Insect Ecology and Management (7 papers). The work is most often cited by research in Paleontology (145 citations), Ecological Modeling (64 citations), Ecology, Evolution, Behavior and Systematics (263 citations), Insect Science (124 citations) and Nature and Landscape Conservation (94 citations). John R. Grehan has collaborated with scholars based in United States, New Zealand and Germany. Frequent co-authors include Jeffrey H. Schwartz, Bruce L. Parker, Michael Heads, C. A. Stace, John E. Rawlins, Brian Patrick, Paul E. Blom, Shelby J. Fleischer, Chris Harding and Jennifer A. White. Their work appears in journals such as Zootaxa, Journal of Biogeography, Journal of Economic Entomology, Annals of Carnegie Museum and Biological Journal of the Linnean Society.
Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.