James D. Ryan

550 total citations
12 papers, 436 citations indexed

About

James D. Ryan is a scholar working on Plant Science, Insect Science and Cellular and Molecular Neuroscience. According to data from OpenAlex, James D. Ryan has authored 12 papers receiving a total of 436 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Plant Science, 6 papers in Insect Science and 3 papers in Cellular and Molecular Neuroscience. Recurrent topics in James D. Ryan's work include Insect-Plant Interactions and Control (6 papers), Nematode management and characterization studies (4 papers) and Agronomic Practices and Intercropping Systems (3 papers). James D. Ryan is often cited by papers focused on Insect-Plant Interactions and Control (6 papers), Nematode management and characterization studies (4 papers) and Agronomic Practices and Intercropping Systems (3 papers). James D. Ryan collaborates with scholars based in United States, Qatar and Czechia. James D. Ryan's co-authors include R. D. Eikenbary, Andrew J. Mort, Peter Gregory, Ward M. Tingey, Niels O. Maness, Richard C. Johnson, Ronald C. Johnson, Francis S. Lee, Eric Delpire and Veronika Kondev and has published in prestigious journals such as Neuron, Analytical Biochemistry and Neuroscience.

In The Last Decade

James D. Ryan

12 papers receiving 416 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
James D. Ryan United States	11	281	182	65	65	61	12	436
Ali Abdel-Rahman United States	12	205 0.7×	154 0.8×	115 1.8×	78 1.2×	31 0.5×	15	562
Sarah Bullman United States	9	126 0.4×	147 0.8×	51 0.8×	55 0.8×	32 0.5×	11	404
Luana Bertini Italy	8	248 0.9×	38 0.2×	84 1.3×	117 1.8×	32 0.5×	11	486
R. A. Nicholson Canada	8	221 0.8×	375 2.1×	145 2.2×	148 2.3×	72 1.2×	16	670
Lixiang Wang China	19	444 1.6×	298 1.6×	279 4.3×	72 1.1×	35 0.6×	59	816
M.L. Tierney Australia	16	406 1.4×	175 1.0×	557 8.6×	248 3.8×	56 0.9×	30	1.1k
Donglan Wang China	12	148 0.5×	129 0.7×	84 1.3×	20 0.3×	40 0.7×	32	522
Jesús G. Zorrilla Spain	11	178 0.6×	31 0.2×	116 1.8×	106 1.6×	67 1.1×	33	482
Mônica Sakai Brazil	14	59 0.2×	65 0.4×	138 2.1×	37 0.6×	21 0.3×	22	869
Wendy D. Myers Australia	9	142 0.5×	43 0.2×	118 1.8×	189 2.9×	25 0.4×	9	969

Countries citing papers authored by James D. Ryan

Since Specialization

Citations

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

Fields of papers citing papers by James D. Ryan

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by James D. Ryan. 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 James D. Ryan. The network helps show where James D. Ryan may publish in the future.

Co-authorship network of co-authors of James D. Ryan

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

All Works

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12 of 12 papers shown

Ryan, James D., et al.. (2022). The role of BDNF in mediating the prophylactic effects of (R,S)-ketamine on fear generalization and extinction. Translational Psychiatry. 12(1). 346–346. 12 indexed citations

Marcus, David J., Gaurav Bedse, Andrew D. Gaulden, et al.. (2020). Endocannabinoid Signaling Collapse Mediates Stress-Induced Amygdalo-Cortical Strengthening. Neuron. 105(6). 1062–1076.e6. 70 indexed citations

Ryan, James D., Yan Zhou, Jason D. Gray, et al.. (2018). Sex Differences in the Rat Hippocampal Opioid System After Oxycodone Conditioned Place Preference. Neuroscience. 393. 236–257. 25 indexed citations

Maness, Niels O., James D. Ryan, & Andrew J. Mort. (1990). Determination of the degree of methyl esterification of pectins in small samples by selective reduction of esterified galacturonic acid to galactose. Analytical Biochemistry. 185(2). 346–352. 80 indexed citations

Ryan, James D., et al.. (1987). Drought/Greebug Interactions: Photosynthesis of Greenbug Resistant and Susceptible Wheat¹. Crop Science. 27(2). 283–288. 31 indexed citations

Ryan, James D., et al.. (1987). Feeding Behavior, Fecundity, and Honeydew Production of Two Biotypes of Greenbug (Homoptera: Aphididae) on Resistant and Susceptible Wheat. Environmental Entomology. 16(3). 757–763. 15 indexed citations

Ryan, James D., et al.. (1987). Variations in Feeding Behavior, Fecundity, and Damage of Biotypes Band E of Schizaphis graminum (Homoptera: Aphididae) on Three Wheat Genotypes. Environmental Entomology. 16(5). 1163–1168. 10 indexed citations

Ryan, James D., et al.. (1987). Modification of Host Nitrogen Levels by the Greenbug (Homoptera: Aphididae): Its Role in Resistance of Winter Wheat to Aphids. Environmental Entomology. 16(4). 1007–1011. 74 indexed citations

Johnson, Richard C., et al.. (1986). Insect-Plant Interactions: Greenbugs (Homoptera: Aphididae) Disrupt Acclimation of Winter Wheat to Drought Stress. Environmental Entomology. 15(1). 118–121. 25 indexed citations

10.

Ryan, James D., et al.. (1986). Reproduction ofSchizaphis graminum(Homoptera: Aphididae) on Resistant and Susceptihle Wheat Genotypes During Simulated Drought Stress Induced with Polyethylene Glycol. Environmental Entomology. 15(3). 756–762. 13 indexed citations

11.

Ryan, James D., Peter Gregory, & Ward M. Tingey. (1983). Glandular trichomes: Enzymic browning assays for improved selection of resistance to the green peach aphid. American Journal of Potato Research. 60(11). 861–868. 14 indexed citations

12.

Ryan, James D., Peter Gregory, & Ward M. Tingey. (1982). Phenolic oxidase activities in glandular trichomes of Solanum berthaultii. Phytochemistry. 21(8). 1885–1887. 67 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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