Tom Johnston

473 total citations
34 papers, 302 citations indexed

About

Tom Johnston is a scholar working on General Agricultural and Biological Sciences, Computational Theory and Mathematics and Discrete Mathematics and Combinatorics. According to data from OpenAlex, Tom Johnston has authored 34 papers receiving a total of 302 indexed citations (citations by other indexed papers that have themselves been cited), including 8 papers in General Agricultural and Biological Sciences, 7 papers in Computational Theory and Mathematics and 6 papers in Discrete Mathematics and Combinatorics. Recurrent topics in Tom Johnston's work include Limits and Structures in Graph Theory (5 papers), Agricultural Economics and Policy (4 papers) and Climate change impacts on agriculture (4 papers). Tom Johnston is often cited by papers focused on Limits and Structures in Graph Theory (5 papers), Agricultural Economics and Policy (4 papers) and Climate change impacts on agriculture (4 papers). Tom Johnston collaborates with scholars based in Canada, United Kingdom and Netherlands. Tom Johnston's co-authors include Q. Chiotti, Barry Smit, Michael Roche, Richard B. Le Heron, Richard Le Heron, Brian Ilbery, Chris Cocklin, Bruno Ebel, Doug Ramsey and Matias E. Margulis and has published in prestigious journals such as SHILAP Revista de lepidopterología, The Economic Journal and Operations Research.

In The Last Decade

Tom Johnston

30 papers receiving 252 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name	h						Papers	Cites
Tom Johnston Canada	11	94	67	67	58	35	34	302
Abdou Maïga Canada	6	82 0.9×	34 0.5×	25 0.4×	13 0.2×	81 2.3×	12	376
Jacques Jansen Netherlands	5	31 0.3×	59 0.9×	62 0.9×	69 1.2×	15 0.4×	8	305
Trần Thị Thu Hà Vietnam	10	27 0.3×	64 1.0×	58 0.9×	130 2.2×	35 1.0×	42	461
Jean-Paul Cheylan France	9	60 0.6×	91 1.4×	9 0.1×	23 0.4×	58 1.7×	27	281
Michele Nori Italy	13	82 0.9×	80 1.2×	48 0.7×	24 0.4×	128 3.7×	48	505
Graham Clarkson United Kingdom	10	139 1.5×	91 1.4×	140 2.1×	43 0.7×	53 1.5×	22	418
Michael Collinson United States	11	86 0.9×	19 0.3×	178 2.7×	104 1.8×	23 0.7×	26	378
Nugun P. Jellason United Kingdom	10	70 0.7×	51 0.8×	72 1.1×	69 1.2×	25 0.7×	14	299
P. R. Seshagiri Rao India	5	62 0.7×	141 2.1×	43 0.6×	59 1.0×	25 0.7×	8	271

Countries citing papers authored by Tom Johnston

Since Specialization

Citations

This map shows the geographic impact of Tom Johnston'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 Tom Johnston with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Tom Johnston more than expected).

Fields of papers citing papers by Tom Johnston

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Tom Johnston. 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 Tom Johnston. The network helps show where Tom Johnston may publish in the future.

Co-authorship network of co-authors of Tom Johnston

This figure shows the co-authorship network connecting the top 25 collaborators of Tom Johnston. A scholar is included among the top collaborators of Tom Johnston based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Tom Johnston. Tom Johnston is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

Balister, Paul, et al.. (2025). Improved bounds for 1-independent percolation on Zn. Electronic Journal of Probability. 30(none). 1 indexed citations

Bastide, Paul, et al.. (2024). A polynomial upper bound for poset saturation. European Journal of Combinatorics. 129. 103970–103970. 1 indexed citations

Bastide, Paul, et al.. (2024). Exact antichain saturation numbers via a generalisation of a result of Lehman-Ron. Explore Bristol Research. 4(1).

Johnston, Tom, et al.. (2024). The Rainbow Saturation Number Is Linear. SIAM Journal on Discrete Mathematics. 38(2). 1239–1249.

Bastide, Paul, et al.. (2023). Exact antichain saturation numbers via a generalisation of a result of Lehman-Ron. 120–126. 3 indexed citations

Johnston, Tom, et al.. (2021). The lengths for which bicrucial square-free permutations exist. arXiv (Cornell University). 2(4). Article #S4PP4–Article #S4PP4.

Johnston, Tom, et al.. (2018). Identifying ranching landscape values in the Calgary, Alberta region: Implications for land‐use planning. Canadian Geographies / Géographies canadiennes. 62(2). 212–224. 4 indexed citations

Johnston, Tom. (2014). Social transformation in rural Canada: community, cultures, and collective action. Social & Cultural Geography. 16(2). 251–252. 17 indexed citations

Bryant, Christopher, et al.. (2013). Food Sovereignty and Agricultural Land Use Planning: The Need to Integrate Public Priorities across Jurisdictions. SHILAP Revista de lepidopterología. 1–8. 15 indexed citations

10.

Xu, Wei, et al.. (2012). Spatial and temporal variation in vulnerability of crop production to drought in southern Alberta. Canadian Geographies / Géographies canadiennes. 56(4). 474–491. 7 indexed citations

11.

Johnston, Tom, et al.. (2010). Managing Time in Relational Databases: How to Design, Update and Query Temporal Data. CERN Document Server (European Organization for Nuclear Research). 11 indexed citations

12.

Johnston, Tom, et al.. (1999). Flemish miniatures from the 8th to the mid-16th century : the medieval world on parchment. Brepols eBooks. 4 indexed citations

13.

Chiotti, Q., et al.. (1997). Agricultural response to climatic change: a preliminary investigation of farm-level adaptation in Southern Alberta.. 201–218. 32 indexed citations

14.

Chiotti, Q. & Tom Johnston. (1995). Extending the boundaries of climate change research: A discussion on agriculture. Journal of Rural Studies. 11(3). 335–350. 60 indexed citations

15.

Heron, Richard Le, Michael Roche, & Tom Johnston. (1994). Pluriactivity: An exploration of issues with reference to New Zealand's livestock and fruit agro-commodity systems. Geoforum. 25(2). 155–171. 16 indexed citations

16.

Roche, Michael, Tom Johnston, & Richard B. Le Heron. (1992). Farmers' Interest Groups and Agricultural Policy in New Zealand during the 1980s. Environment and Planning A Economy and Space. 24(12). 1749–1767. 24 indexed citations

17.

Smit, Barry, et al.. (1987). IDENTIFYING IMPORTANT AGRICULTURAL LANDS: A CRITIQUE. Canadian Geographies / Géographies canadiennes. 31(4). 356–365. 5 indexed citations

18.

Cocklin, Chris, Barry Smit, & Tom Johnston. (1987). Demands On Rural Lands: Planning For Resource Use. Medical Entomology and Zoology. 16 indexed citations

19.

Smit, Barry & Tom Johnston. (1983). PUBLIC POLICY ASSESSMENT: EVALUATING OBJECTIVES OF RESOURCE POLICIES∗. The Professional Geographer. 35(2). 172–178. 4 indexed citations

20.

Jewell, William S., et al.. (1974). Operations Research in the Insurance Industry: II. An Application in Claims Operations of Workmen's Compensation Insurance. Operations Research. 22(5). 929–941. 4 indexed citations

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.

Explore authors with similar magnitude of impact