Ryan Johnson

1.6k total citations
35 papers, 844 citations indexed

About

Ryan Johnson is a scholar working on Ecology, Nature and Landscape Conservation and Global and Planetary Change. According to data from OpenAlex, Ryan Johnson has authored 35 papers receiving a total of 844 indexed citations (citations by other indexed papers that have themselves been cited), including 18 papers in Ecology, 12 papers in Nature and Landscape Conservation and 8 papers in Global and Planetary Change. Recurrent topics in Ryan Johnson's work include Ichthyology and Marine Biology (12 papers), Marine animal studies overview (8 papers) and Remote Sensing in Agriculture (5 papers). Ryan Johnson is often cited by papers focused on Ichthyology and Marine Biology (12 papers), Marine animal studies overview (8 papers) and Remote Sensing in Agriculture (5 papers). Ryan Johnson collaborates with scholars based in South Africa, United States and Canada. Ryan Johnson's co-authors include Michael A. Meÿer, Deon Kotze, Shannon M. O’Brien, Herman Oosthuizen, Michael J. Paterson, Michael C. Scholl, Ramón Bonfil, Derek R. Peddle, Enrico Gennari and Marthán N Bester and has published in prestigious journals such as Science, PLoS ONE and Remote Sensing of Environment.

In The Last Decade

Ryan Johnson

33 papers receiving 778 citations

Peers

Ryan Johnson

NLC

ECOLO

GPC

Emma Lawrence Australia

Jody A. Peters United States

John F. McEvoy United States

Lasse Fast Jensen Denmark

N. Bailey United Kingdom

Andrew G. Lotto Canada

Sofia Ortega‐García Mexico

Monique MacKenzie United Kingdom

Jeffrey C. Howe United States

Joanne Potts Australia

Emma Lawrence Australia

Ryan Johnson

364 ×0.7

NLC

441 ×1.0

ECOLO

316 ×1.1

GPC

84 ×0.6

18 ×0.2

Citations per year, relative to Ryan Johnson Ryan Johnson (= 1×) peers Emma Lawrence

Countries citing papers authored by Ryan Johnson

Since Specialization

Citations

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

Fields of papers citing papers by Ryan Johnson

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Ryan Johnson

This figure shows the co-authorship network connecting the top 25 collaborators of Ryan Johnson. A scholar is included among the top collaborators of Ryan 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 Ryan Johnson. Ryan Johnson 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

Johnson, Ryan, et al.. (2024). Automated cell lineage reconstruction using label-free 4D microscopy. Genetics. 228(2). 2 indexed citations

Massud, Ivana, Susan Ruone, María Zlotorzynska, et al.. (2020). Single oral dose for HIV pre or post-exposure prophylaxis: user desirability and biological efficacy in macaques. EBioMedicine. 58. 102894–102894. 15 indexed citations

Gennari, Enrico, Alison A. Kock, M. J. Smale, et al.. (2019). Antibiotic sensitivity of bacteria isolated from the oral cavities of live white sharks (Carcharodon carcharias) in South African waters. South African Journal of Science. 115(11/12). 1 indexed citations

Bester, MN, et al.. (2019). Cape fur seals (Arctocephalus pusillus pusillus) adjust traversing behaviour with lunar conditions in the high white shark (Carcharodon carcharias) density waters of Mossel Bay, South Africa. Marine Ecology Progress Series. 622. 219–230. 3 indexed citations

Gennari, Enrico, Paul D. Cowley, & Ryan Johnson. (2018). Performance and reliability of active acoustic biotelemetry to best track marine pelagic species in temperate coastal waters. Marine Biology. 165(8). 3 indexed citations

Garber, David A., James Mitchell, Debra Adams, et al.. (2018). Development of a repeat-exposure penile SHIV infection model in macaques to evaluate biomedical preventions against HIV. PLoS ONE. 13(3). e0194837–e0194837. 7 indexed citations

Johnson, Ryan. (2017). A Movement for Change: Horatio Robinson Storer and Physicians’ Crusade Against Abortion. JMU Scholoraly Commons (James Madison University). 4(1). 2. 2 indexed citations

Butler, Katherine, Jana M. Ritter, Ryan Johnson, et al.. (2014). A combined oral contraceptive affects mucosal SHIV susceptibility factors in a pigtail macaque (Macaca nemestrina) model. Journal of Medical Primatology. 44(2). 97–107. 6 indexed citations

Pistorius, Pierre, et al.. (2014). Spatial and seasonal patterns in sighting rate and life-history composition of the white sharkCarcharodon carchariasat Mossel Bay, South Africa. African Journal of Marine Science. 36(4). 449–453. 21 indexed citations

10.

Iwanowicz, Deborah D., Luke R. Iwanowicz, Elizabeth W. Howerth, et al.. (2013). Characterization of a New Myxozoan Species (Myxozoa: Myxobolidae: Myxosporea) in Largescale Stonerollers (Campostoma oligolepis) from the Mobile River Basin (Alabama). Journal of Parasitology. 99(1). 102–111. 12 indexed citations

11.

Delaney, David G., Ryan Johnson, Marthán N Bester, & Enrico Gennari. (2012). Accuracy of Using Visual Identification of White Sharks to Estimate Residency Patterns. PLoS ONE. 7(4). e34753–e34753. 12 indexed citations

12.

Jewell, Oliver J. D., et al.. (2011). Effects of Smart Position Only (SPOT) Tag Deployment on White Sharks Carcharodon carcharias in South Africa. PLoS ONE. 6(11). e27242–e27242. 27 indexed citations

13.

Vignon, M.R., Pierre Sasal, Ryan Johnson, & René Galzin. (2010). Impact of shark-feeding tourism on surrounding fish populations off Moorea Island (French Polynesia). Marine and Freshwater Research. 61(2). 163–169. 22 indexed citations

14.

Johnson, Ryan, et al.. (2009). Encounters between white sharks and Cape fur seals in a shallow channel. Marine Biodiversity Records. 2. 7 indexed citations

15.

Laskey, Kathryn Blackmond, et al.. (2009). Evaluation of High Resolution Imagery and Elevation Data. George Mason University.

16.

Johnson, Ryan, et al.. (2006). Seabird predation by white shark, Carcharodon carcharias, and Cape fur seal, Arctocephalus pusillus pusillus, at Dyer Island : research article. African Journal of Wildlife Research. 36(1). 23–32. 14 indexed citations

17.

Peddle, Derek R., Steven E. Franklin, Ryan Johnson, M. B. Lavigne, & Michael A. Wulder. (2003). Structural change detection in a disturbed conifer forest using a geometric optical reflectance model in multiple-forward mode. IEEE Transactions on Geoscience and Remote Sensing. 41(1). 163–166. 42 indexed citations

18.

Peddle, Derek R., Ryan Johnson, J. Cihlar, B. Guindon, & R. Latifovic. (2003). Large area forest classification and biophysical parameter estimation using the 5-scale reflectance model in multiple-forward-mode. 2. 896–898. 2 indexed citations

19.

Johnson, Ryan, et al.. (1998). Genetic diversity and cellulolytic activity among several species of unionid bivalves in Arkansas. Journal of Shellfish Research. 17(5). 1375–1382. 5 indexed citations

20.

Leonard, Donald A., et al.. (1977). Experimental remote sensing of subsurface temperature in natural ocean water. Geophysical Research Letters. 4(7). 279–281. 21 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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