John S. Placyk

407 total citations
22 papers, 303 citations indexed

About

John S. Placyk is a scholar working on Global and Planetary Change, Nature and Landscape Conservation and Ecology, Evolution, Behavior and Systematics. According to data from OpenAlex, John S. Placyk has authored 22 papers receiving a total of 303 indexed citations (citations by other indexed papers that have themselves been cited), including 14 papers in Global and Planetary Change, 10 papers in Nature and Landscape Conservation and 7 papers in Ecology, Evolution, Behavior and Systematics. Recurrent topics in John S. Placyk's work include Amphibian and Reptile Biology (14 papers), Animal Behavior and Reproduction (7 papers) and Turtle Biology and Conservation (4 papers). John S. Placyk is often cited by papers focused on Amphibian and Reptile Biology (14 papers), Animal Behavior and Reproduction (7 papers) and Turtle Biology and Conservation (4 papers). John S. Placyk collaborates with scholars based in United States and Canada. John S. Placyk's co-authors include Gordon M. Burghardt, Brent M. Graves, Brian Harrington, Gary S. Casper, Benjamin M. Fitzpatrick, Matthew L. Niemiller, Randall L. Small, Steven M. Mussmann, Richard B. King and Lance R. Williams and has published in prestigious journals such as Molecular Ecology, Molecular Phylogenetics and Evolution and Hydrobiologia.

In The Last Decade

John S. Placyk

21 papers receiving 284 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
John S. Placyk United States 11 146 142 94 92 72 22 303
Quentin Martinez France 9 110 0.8× 85 0.6× 55 0.6× 91 1.0× 55 0.8× 26 261
Kimberly L. Hunter United States 11 66 0.5× 92 0.6× 72 0.8× 174 1.9× 49 0.7× 25 330
Zachary W. Culumber United States 12 74 0.5× 167 1.2× 182 1.9× 216 2.3× 178 2.5× 30 464
Claudia Tocco South Africa 11 92 0.6× 117 0.8× 57 0.6× 141 1.5× 206 2.9× 23 400
Marie‐Claire Chelini United States 10 135 0.9× 99 0.7× 113 1.2× 177 1.9× 68 0.9× 15 326
Trevor D. Meckley United States 9 90 0.6× 289 2.0× 29 0.3× 136 1.5× 231 3.2× 10 449
Marina Morini Spain 14 116 0.8× 103 0.7× 182 1.9× 41 0.4× 73 1.0× 26 478
Silvia Inés Quinzio Argentina 11 329 2.3× 60 0.4× 41 0.4× 227 2.5× 98 1.4× 24 361
Jill DeVito United States 7 144 1.0× 118 0.8× 103 1.1× 247 2.7× 84 1.2× 8 354
Sofia Caesar Sweden 8 98 0.7× 81 0.6× 162 1.7× 344 3.7× 83 1.2× 9 418

Countries citing papers authored by John S. Placyk

Since Specialization
Citations

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

Fields of papers citing papers by John S. Placyk

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by John S. Placyk. 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 John S. Placyk. The network helps show where John S. Placyk may publish in the future.

Co-authorship network of co-authors of John S. Placyk

This figure shows the co-authorship network connecting the top 25 collaborators of John S. Placyk. A scholar is included among the top collaborators of John S. Placyk 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 John S. Placyk. John S. Placyk 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.
Chafin, Tyler K., et al.. (2021). The choices we make and the impacts they have: Machine learning and species delimitation in North American box turtles ( Terrapene spp.). Molecular Ecology Resources. 21(8). 2801–2817. 10 indexed citations
2.
Hertweck, Kate L., et al.. (2021). Multiple complementary studies clarify which co-occurring congener presents the greatest hybridization threat to a rare Texas endemic wildflower (Hibiscus dasycalyx: Malvaceae). Journal of the Botanical Research Institute of Texas. 15(1). 283–308. 1 indexed citations
3.
4.
Douglas, Marlis R., et al.. (2020). Contrasting signatures of introgression in North American box turtle ( Terrapene spp.) contact zones. Molecular Ecology. 29(21). 4186–4202. 13 indexed citations
5.
Marshall, Nathaniel T., et al.. (2018). DNA Barcoding Permits Identification of Potential Fish Hosts of Unionid Freshwater Mussels. American Malacological Bulletin. 36(1). 42–56. 14 indexed citations
6.
Placyk, John S., et al.. (2017). Verification of Two Cyprinid Host Fishes for the Texas Pigtoe, Fusconaia Askewi. 20(2). 65–65. 2 indexed citations
7.
Ford, Neil B., et al.. (2013). Sensory Mediation of Foraging Behavior in the Western Lesser Siren (Siren intermedia nettingi). Journal of Herpetology. 47(1). 75–77. 3 indexed citations
8.
Mussmann, Steven M., et al.. (2013). Sequence-based molecular phylogenetics and phylogeography of the American box turtles (Terrapene spp.) with support from DNA barcoding. Molecular Phylogenetics and Evolution. 68(1). 119–134. 30 indexed citations
9.
Chamberlain, Katie, et al.. (2013). Influence of Atrazine on the Scalation of Marcy’s Checkered Gartersnake, Thamnophis m. marcianus (Baird and Girard, 1853). Bulletin of Environmental Contamination and Toxicology. 92(1). 1–5. 3 indexed citations
10.
11.
Placyk, John S., Benjamin M. Fitzpatrick, Gary S. Casper, et al.. (2012). Hybridization between two gartersnake species (Thamnophis) of conservation concern: a threat or an important natural interaction?. Conservation Genetics. 13(3). 649–663. 14 indexed citations
12.
Placyk, John S. & Gordon M. Burghardt. (2011). Evolutionary persistence of chemically elicited ophiophagous antipredator responses in gartersnakes (Thamnophis sirtalis).. Journal of comparative psychology. 125(2). 134–142. 9 indexed citations
13.
14.
Fitzpatrick, Benjamin M., John S. Placyk, Matthew L. Niemiller, Gary S. Casper, & Gordon M. Burghardt. (2008). Distinctiveness in the face of gene flow: hybridization between specialist and generalist gartersnakes. Molecular Ecology. 17(18). 4107–4117. 38 indexed citations
15.
Placyk, John S., et al.. (2006). Post-glacial recolonization of the Great Lakes region by the common gartersnake (Thamnophis sirtalis) inferred from mtDNA sequences. Molecular Phylogenetics and Evolution. 43(2). 452–467. 25 indexed citations
16.
Placyk, John S. & Gordon M. Burghardt. (2005). Geographic variation in the frequency of scarring and tail stubs in eastern gartersnakes (Thamnophis s. sirtalis) from Michigan, USA. Amphibia-Reptilia. 26(3). 353–358. 22 indexed citations
17.
Placyk, John S. & Brian Harrington. (2004). Prey abundance and habitat use by migratory shorebirds at coastal stopover sites in Connecticut. Journal of Field Ornithology. 75(3). 223–231. 50 indexed citations
18.
Placyk, John S. & Brent M. Graves. (2002). Prey Detection by Vomeronasal Chemoreception in a Plethodontid Salamander. Journal of Chemical Ecology. 28(5). 1017–1036. 36 indexed citations
19.
Graves, Brent M. & John S. Placyk. (2001). A new technique for observing redback salamanders, Plethodon cinereus, in the absence of visual stimuli. Herpetological review. 32(2). 94–95. 1 indexed citations
20.
Placyk, John S. & Brent M. Graves. (2001). Foraging Behavior of the Red-Backed Salamander (Plethodon cinereus) under Various Lighting Conditions. Journal of Herpetology. 35(3). 521–521. 16 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

Breakdown of academic impact, for papers by Quentin Martinez Breakdown of academic impact, for papers by Kimberly L. Hunter Breakdown of academic impact, for papers by Zachary W. Culumber Breakdown of academic impact, for papers by Claudia Tocco Breakdown of academic impact, for papers by Marie‐Claire Chelini Breakdown of academic impact, for papers by Trevor D. Meckley Breakdown of academic impact, for papers by Marina Morini Breakdown of academic impact, for papers by Silvia Inés Quinzio Breakdown of academic impact, for papers by Jill DeVito Breakdown of academic impact, for papers by Sofia Caesar
Rankless by CCL
2026