A. Earl Johnson

964 total citations
46 papers, 697 citations indexed

About

A. Earl Johnson is a scholar working on Molecular Biology, Ecology, Evolution, Behavior and Systematics and Plant Science. According to data from OpenAlex, A. Earl Johnson has authored 46 papers receiving a total of 697 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Molecular Biology, 14 papers in Ecology, Evolution, Behavior and Systematics and 7 papers in Plant Science. Recurrent topics in A. Earl Johnson's work include Plant Toxicity and Pharmacological Properties (18 papers), Botanical Research and Chemistry (13 papers) and Botany, Ecology, and Taxonomy Studies (6 papers). A. Earl Johnson is often cited by papers focused on Plant Toxicity and Pharmacological Properties (18 papers), Botanical Research and Chemistry (13 papers) and Botany, Ecology, and Taxonomy Studies (6 papers). A. Earl Johnson collaborates with scholars based in United States and United Kingdom. A. Earl Johnson's co-authors include Russell J. Molyneux, Lynn F. James, Glory B. Merrill, Xiangzhi Song, J Foley, Datus M. Hammond, James N. Roitman, Mabry Benson, Kent R. Van Kampen and Paul R. Fitzgerald and has published in prestigious journals such as Journal of the American Chemical Society, Journal of Agricultural and Food Chemistry and Journal of Bacteriology.

In The Last Decade

A. Earl Johnson

46 papers receiving 631 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
A. Earl Johnson United States 15 335 243 154 116 67 46 697
T.W. Naudé South Africa 14 274 0.8× 211 0.9× 220 1.4× 63 0.5× 4 0.1× 37 816
Charles J. Shaw United States 17 278 0.8× 47 0.2× 59 0.4× 22 0.2× 23 0.3× 37 829
James D. Dutcher United States 23 375 1.1× 215 0.9× 384 2.5× 24 0.2× 19 0.3× 79 1.4k
Milton Masahiko Kanashiro Brazil 19 273 0.8× 96 0.4× 67 0.4× 30 0.3× 26 0.4× 55 892
A. D. Larson United States 18 377 1.1× 54 0.2× 204 1.3× 10 0.1× 36 0.5× 38 846
D. G. Smith United Kingdom 20 394 1.2× 71 0.3× 189 1.2× 8 0.1× 32 0.5× 50 1.0k
Josefino B. Tunac United States 12 536 1.6× 55 0.2× 249 1.6× 22 0.2× 24 0.4× 23 1.2k
Gang Yao China 14 368 1.1× 212 0.9× 139 0.9× 22 0.2× 21 0.3× 40 680
Dhanasekaran Shanmugam India 18 561 1.7× 38 0.2× 232 1.5× 32 0.3× 31 0.5× 43 1.2k
Claire M. Martel United Kingdom 13 229 0.7× 57 0.2× 106 0.7× 30 0.3× 7 0.1× 16 773

Countries citing papers authored by A. Earl Johnson

Since Specialization
Citations

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

Fields of papers citing papers by A. Earl Johnson

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A. Earl Johnson. 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 A. Earl Johnson. The network helps show where A. Earl Johnson may publish in the future.

Co-authorship network of co-authors of A. Earl Johnson

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

All Works

20 of 20 papers shown
1.
Phillips, Alexander B., et al.. (2025). Anchoring AUVs: Towards a Year-Long Deployment Under Sea Ice. 1–5. 1 indexed citations
2.
Tan, Xiaochen, et al.. (2023). In situ characterization of nanoparticle protein corona using real-time 3D single-particle tracking. Biophysical Journal. 122(3). 152a–153a. 1 indexed citations
3.
Johnson, A. Earl, et al.. (2022). Examining drivers of coronavirus disease 2019 (COVID-19) vaccine hesitancy among healthcare workers. Infection Control and Hospital Epidemiology. 43(12). 1813–1821. 12 indexed citations
4.
Johnson, A. Earl, Russell J. Molyneux, & Michael H. Ralphs. (1989). Senecio: a dangerous plant for man and beast.. UA Campus Repository (The University of Arizona). 11(6). 261–262. 11 indexed citations
5.
Johnson, A. Earl, et al.. (1985). Toxicity of Riddell's groundsel (Senecio riddellii) to cattle. American Journal of Veterinary Research. 46(3). 577–582. 3 indexed citations
6.
Johnson, A. Earl & Russell J. Molyneux. (1985). Variation in toxic pyrrolizidine alkaloid content of plants, associated with site, stage of growth and environmental conditions.. 209–218. 2 indexed citations
7.
Johnson, A. Earl, et al.. (1985). Toxicity of Riddell’s groundsel (Senecio riddellii) to cattle. Journal of the American Veterinary Medical Association. 187(8). 846–846. 23 indexed citations
8.
Johnson, A. Earl & Russell J. Molyneux. (1984). Toxicity of threadleaf groundsel (Senecio douglasii var longilobus) to cattle. American Journal of Veterinary Research. 45(1). 26–31. 5 indexed citations
9.
Johnson, A. Earl, et al.. (1983). Effects on cattle and their calves of tansy ragwort (Senecio jacobaea) fed in early gestation. American Journal of Veterinary Research. 44(7). 1215–1219. 6 indexed citations
10.
Johnson, A. Earl. (1982). Failure of mineral-vitamin supplements to prevent tansy ragwort (Senecio jacobaea) toxicosis in cattle. American Journal of Veterinary Research. 43(4). 718–723. 3 indexed citations
11.
Johnson, A. Earl. (1982). Toxicologic aspects of photosensitization in livestock.. PubMed. 69(1). 253–8. 11 indexed citations
12.
Johnson, A. Earl. (1978). Tolerance of Cattle to Tansy Ragwort (Senecio jacobaea). American Journal of Veterinary Research. 39(9). 1542–1544. 4 indexed citations
13.
Johnson, A. Earl. (1976). Changes in Calves and Rats Consuming Milk from Cows Fed Chronic Lethal Doses of Senecio jacobaea (Tansy Ragwort). American Journal of Veterinary Research. 37(1). 107–110. 2 indexed citations
14.
Johnson, A. Earl, et al.. (1976). The Abortifacient and Toxic Effects of Big Sagebrush (Artemisia tridentata) and Juniper (Juniperus osteosperma) on Domestic Sheep. Journal of Range Management. 29(4). 278–278. 35 indexed citations
15.
Johnson, A. Earl. (1974). Predisposing Influence of Range Plants on Tetradymia-Related Photosensitization in Sheep: Work of Drs. A. B. Clawson and W. T. Huffman. American Journal of Veterinary Research. 35(12). 1583–1585. 1 indexed citations
16.
Binns, Wayne, Lynn F. James, & A. Earl Johnson. (1971). Control of Larkspur with Herbicides Plus Nitrogen Fertilizer. Journal of Range Management. 24(2). 110–110. 6 indexed citations
17.
Kampen, Kent R. Van, et al.. (1970). Effects of Nerve Gas Poisoning in Sheep in Skull Valley, Utah. Journal of the American Veterinary Medical Association. 156(8). 1032–1035. 5 indexed citations
18.
Kampen, Kent R. Van, Lynn F. James, & A. Earl Johnson. (1970). Hemolytic Anemia in Sheep Fed Wild Onion (Allium validum). Journal of the American Veterinary Medical Association. 156(3). 328–332. 19 indexed citations
19.
James, Lynn F. & A. Earl Johnson. (1970). Prevention of Fatal Halogeton glomeratus Poisoning in Sheep. Journal of the American Veterinary Medical Association. 157(4). 437–442. 3 indexed citations
20.
James, Lynn F., Kent R. Van Kampen, & A. Earl Johnson. (1970). Physiopathologic Changes in Locoweed Poisoning of Livestock. American Journal of Veterinary Research. 31(4). 663–672. 23 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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