Thomas N. Johnsen

453 total citations
25 papers, 296 citations indexed

About

Thomas N. Johnsen is a scholar working on Ecology, Anthropology and Plant Science. According to data from OpenAlex, Thomas N. Johnsen has authored 25 papers receiving a total of 296 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Ecology, 6 papers in Anthropology and 6 papers in Plant Science. Recurrent topics in Thomas N. Johnsen's work include Rangeland and Wildlife Management (7 papers), Archaeology and Natural History (6 papers) and Botany, Ecology, and Taxonomy Studies (5 papers). Thomas N. Johnsen is often cited by papers focused on Rangeland and Wildlife Management (7 papers), Archaeology and Natural History (6 papers) and Botany, Ecology, and Taxonomy Studies (5 papers). Thomas N. Johnsen collaborates with scholars based in United States and United Kingdom. Thomas N. Johnsen's co-authors include Howard L. Morton, William E. Emmerich, Jean E. McLain, Richard D. Martin, Donald A. Jameson, J. R. Simanton, James A. Young, Jana Cox and S. Clark Martin and has published in prestigious journals such as Ecology, Ecological Monographs and Journal of Environmental Quality.

In The Last Decade

Thomas N. Johnsen

21 papers receiving 212 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Thomas N. Johnsen United States	9	157	134	101	93	50	25	296
J. v␁an den Burg Netherlands	6	79 0.5×	140 1.0×	66 0.7×	124 1.3×	109 2.2×	22	307
Aron Aronsson Sweden	10	78 0.5×	194 1.4×	115 1.1×	178 1.9×	109 2.2×	11	367
E. J. DePuit United States	10	175 1.1×	152 1.1×	144 1.4×	168 1.8×	43 0.9×	28	371
H. W. Zoettl Germany	5	58 0.4×	114 0.9×	44 0.4×	116 1.2×	86 1.7×	5	287
James R. Boyle United States	7	85 0.5×	116 0.9×	138 1.4×	28 0.3×	113 2.3×	13	296
H. van Oene Netherlands	9	65 0.4×	66 0.5×	47 0.5×	91 1.0×	49 1.0×	18	196
Clinton E. Carlson United States	10	154 1.0×	148 1.1×	147 1.5×	113 1.2×	13 0.3×	41	368
Micheline Colin-Belgrand France	10	98 0.6×	107 0.8×	132 1.3×	161 1.7×	133 2.7×	14	373
A. O. Isichei Nigeria	13	52 0.3×	116 0.9×	67 0.7×	89 1.0×	58 1.2×	30	341
Peter H�gberg Sweden	7	120 0.8×	109 0.8×	105 1.0×	156 1.7×	179 3.6×	7	371

Countries citing papers authored by Thomas N. Johnsen

Since Specialization

Citations

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

Fields of papers citing papers by Thomas N. Johnsen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Thomas N. Johnsen. 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 Thomas N. Johnsen. The network helps show where Thomas N. Johnsen may publish in the future.

Co-authorship network of co-authors of Thomas N. Johnsen

This figure shows the co-authorship network connecting the top 25 collaborators of Thomas N. Johnsen. A scholar is included among the top collaborators of Thomas N. Johnsen 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 Thomas N. Johnsen. Thomas N. Johnsen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

Johnsen, Thomas N.. (1992). Observations: Potential Long-Term Environmental Impact of Tebuthiuron and Its Metabolites in Utah Juniper Trees. Journal of Range Management. 45(2). 167–167. 2 indexed citations

Morton, Howard L., Thomas N. Johnsen, & J. R. Simanton. (1989). Movement of Tebuthiuron Applied to Wet and Dry Rangeland Soils. Weed Science. 37(1). 117–122. 5 indexed citations

Johnsen, Thomas N. & Howard L. Morton. (1989). Tebuthiuron Persistence and Distribution in Some Semiarid Soils. Journal of Environmental Quality. 18(4). 433–438. 16 indexed citations

Johnsen, Thomas N., et al.. (1984). Chains for Mechanical Brush Control. UA Campus Repository (The University of Arizona). 6(3). 122–127. 5 indexed citations

Johnsen, Thomas N., et al.. (1984). Controlling Individual Junipers and Oaks with Pelleted Picloram. Journal of Range Management. 37(4). 380–380. 3 indexed citations

Johnsen, Thomas N. & Richard D. Martin. (1983). Altitude Effects on Picloram Disappearance in Sunlight. Weed Science. 31(3). 315–317. 3 indexed citations

Johnsen, Thomas N., et al.. (1982). Establishing Natural Regeneration of Ponderosa Pine in Central Arizona. Journal of Forestry. 80(2). 77–79. 18 indexed citations

Johnsen, Thomas N., et al.. (1981). Forage Plantings on Six Arizona Pinyon-Juniper Subtypes. Journal of Range Management. 34(2). 131–131. 3 indexed citations

Johnsen, Thomas N., et al.. (1981). Mulching, Furrowing, and Fallowing of Forage Plantings on Arizona Pinyon-Juniper Ranges. Journal of Range Management. 34(3). 171–171. 8 indexed citations

10.

Johnsen, Thomas N., et al.. (1980). Effects of Fall Burning of Chaparral Woodland on Soil Residues of Picloram. Weed Science. 28(3). 282–284.

11.

Johnsen, Thomas N.. (1980). Picloram in Water and Soil from a Semiarid Pinyon‐Juniper Watershed. Journal of Environmental Quality. 9(4). 601–605. 8 indexed citations

12.

Johnsen, Thomas N., et al.. (1980). Picloram Dissipation in a Small Southwestern Stream. Weed Science. 28(5). 612–615. 3 indexed citations

13.

Johnsen, Thomas N., et al.. (1973). Cultural, Seasonal, and Site Effects on Pinyon-Juniper Rangeland Plantings. Journal of Range Management. 26(4). 279–279. 5 indexed citations

14.

Jameson, Donald A. & Thomas N. Johnsen. (1964). Ecology and Control of Alligator Juniper. Weeds. 12(2). 140–140. 4 indexed citations

15.

Johnsen, Thomas N.. (1963). Anatomy of Scalelike Leaves of Arizona Junipers. Botanical Gazette. 124(3). 220–224. 9 indexed citations

16.

Johnsen, Thomas N.. (1962). One‐Seed Juniper Invasion of Northern Arizona Grasslands. Ecological Monographs. 32(3). 187–207. 128 indexed citations

17.

Johnsen, Thomas N.. (1959). An Epiphytic Prickly‐Pear Cactus. Ecology. 40(2). 324–324. 1 indexed citations

18.

Johnsen, Thomas N.. (1959). Terrestrial Cryptogams in a Pine Woodland with and without Litter. The Bryologist. 62(1). 35–35. 5 indexed citations

19.

Johnsen, Thomas N.. (1959). Longetivity of Stored Juniper Seeds. Ecology. 40(3). 487–488. 8 indexed citations

20.

Johnsen, Thomas N.. (1954). The effects of nitrogen and phosphate fertilizers upon a southern Arizona range. UA Campus Repository (The University of Arizona). 5 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.

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