Travis J. Ryan

3.5k total citations · 1 hit paper
41 papers, 2.3k citations indexed

About

Travis J. Ryan is a scholar working on Global and Planetary Change, Nature and Landscape Conservation and Ecology. According to data from OpenAlex, Travis J. Ryan has authored 41 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 22 papers in Global and Planetary Change, 16 papers in Nature and Landscape Conservation and 16 papers in Ecology. Recurrent topics in Travis J. Ryan's work include Amphibian and Reptile Biology (21 papers), Turtle Biology and Conservation (11 papers) and Animal Behavior and Reproduction (11 papers). Travis J. Ryan is often cited by papers focused on Amphibian and Reptile Biology (21 papers), Turtle Biology and Conservation (11 papers) and Animal Behavior and Reproduction (11 papers). Travis J. Ryan collaborates with scholars based in United States, United Kingdom and Australia. Travis J. Ryan's co-authors include Christopher T. Winne, Judith L. Greene, Kurt A. Buhlmann, Tracey D. Tuberville, Brian S. Metts, David E. Scott, Raymond D. Semlitsch, Amal K. Kurban, Michael E. Dorcas and David M. Sever and has published in prestigious journals such as Proceedings of the National Academy of Sciences, Journal of Applied Physiology and Conservation Biology.

In The Last Decade

Travis J. Ryan

40 papers receiving 2.1k citations

Hit Papers

The Global Decline of Reptiles, Déjà Vu Amphibians 2000 2026 2008 2017 2000 400 800 1.2k
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. The Global Decline of Reptiles, Déjà Vu Amphibians
    2000 1.3k citations David E. Scott, Travis J. Ryan et al. BioScience profile →

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Travis J. Ryan United States 21 1.4k 1.2k 1.0k 563 436 41 2.3k
Christopher T. Winne United States 24 1.6k 1.1× 1.3k 1.1× 1.0k 1.0× 677 1.2× 461 1.1× 31 2.3k
Tracey D. Tuberville United States 23 1.5k 1.1× 1.4k 1.2× 1.6k 1.5× 499 0.9× 434 1.0× 97 2.8k
Xavier Santos Spain 29 1.3k 1.0× 1.1k 1.0× 669 0.6× 765 1.4× 569 1.3× 124 2.4k
R. Bruce Bury United States 30 1.7k 1.2× 1.6k 1.3× 1.3k 1.2× 806 1.4× 440 1.0× 96 2.7k
Stephen J. Hecnar Canada 20 1.3k 0.9× 1.4k 1.2× 797 0.8× 543 1.0× 354 0.8× 36 2.2k
Adolfo Marco Spain 36 2.2k 1.6× 1.3k 1.1× 2.1k 2.0× 353 0.6× 815 1.9× 153 3.6k
Grahame J. W. Webb Australia 26 697 0.5× 1.2k 1.1× 1.4k 1.4× 115 0.2× 411 0.9× 87 2.7k
Curtice R. Griffin United States 28 501 0.4× 1.6k 1.4× 631 0.6× 261 0.5× 305 0.7× 67 2.1k
Anders G. J. Rhodin United States 21 983 0.7× 662 0.6× 1.3k 1.3× 237 0.4× 288 0.7× 59 2.0k
Ruth M. Elsey United States 35 738 0.5× 1.1k 1.0× 1.2k 1.2× 67 0.1× 604 1.4× 157 3.4k

Countries citing papers authored by Travis J. Ryan

Since Specialization
Citations

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

Fields of papers citing papers by Travis J. Ryan

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Travis J. Ryan

This figure shows the co-authorship network connecting the top 25 collaborators of Travis J. Ryan. A scholar is included among the top collaborators of Travis J. 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 Travis J. Ryan. Travis J. Ryan 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.
Gallo, Travis, Mason Fidino, Brian D. Gerber, et al.. (2022). Mammals adjust diel activity across gradients of urbanization. eLife. 11. 36 indexed citations
2.
3.
Ryan, Travis J.. (2019). Diet of Trachemys scripta (Red-eared Slider) and Graptemys geographica (Common Map Turtle) in an Urban Landscape. Digital Commons @ Butler University (Butler University). 21. 1–11.
4.
Beachy, Christopher K., Travis J. Ryan, & Ronald M. Bonett. (2017). How Metamorphosis Is Different in Plethodontids: Larval Life History Perspectives on Life-Cycle Evolution. Herpetologica. 73(3). 252–258. 15 indexed citations
5.
Semlitsch, Raymond D., et al.. (2006). Salamander Abundance along Road Edges and within Abandoned Logging Roads in Appalachian Forests. Conservation Biology. 21(1). 159–167. 80 indexed citations
6.
Ryan, Travis J., et al.. (2006). Sub-lethal Effects of 2,4-D Exposure on Golf Course Amphibians. Digital Commons @ Butler University (Butler University). 5(16). 1–14. 5 indexed citations
7.
Clark, Thomas D., et al.. (2005). Factorial Aerobic Scope Is Independent of Temperature and Primarily Modulated by Heart Rate in Exercising Murray Cod (Maccullochella peelii peelii). Physiological and Biochemical Zoology. 78(3). 347–355. 56 indexed citations
8.
Ryan, Travis J., et al.. (2005). Descriptive Ecology of a Turtle Assemblage in an Urban Landscape. The American Midland Naturalist. 153(2). 428–435. 34 indexed citations
9.
Ryan, Travis J. & Gordon R. Plague. (2004). Hatching asynchrony, survival, and the fitness of alternative adult morphs in Ambystoma talpoideum. Oecologia. 140(1). 46–51. 30 indexed citations
10.
Ryan, Travis J. & Raymond D. Semlitsch. (2003). Growth and the expression of alternative life cycles in the salamander Ambystoma talpoideum (Caudata: Ambystomatidae). Biological Journal of the Linnean Society. 80(4). 639–646. 28 indexed citations
11.
Sever, David M., et al.. (2002). Ultrastructure of the reproductive system of the black swamp snake (seminatrix pygaea). III. Sexual segment of the male kidney. Journal of Morphology. 252(3). 238–254. 38 indexed citations
12.
Ryan, Travis J., et al.. (2001). Does Sex Influence Postreproductive Metamorphosis in Ambystoma talpoideum?. Journal of Herpetology. 35(4). 697–697. 2 indexed citations
13.
Ryan, Travis J., et al.. (2000). Seminatrix pygaea . Diet.. Herpetological review. 31. 47–47. 2 indexed citations
14.
Sever, David M., et al.. (2000). Ultrastructure of the reproductive system of the black swamp snake (Seminatrix pygaea). II. Annual oviducal cycle. Journal of Morphology. 245(2). 146–160. 31 indexed citations
15.
Sever, David M., et al.. (2000). Ultrastructure of the reproductive system of the black swamp snake (Seminatrix pygaea). II. Annual oviducal cycle. Journal of Morphology. 245(2). 146–160. 1 indexed citations
16.
Scott, David E., Travis J. Ryan, Kurt A. Buhlmann, et al.. (2000). The Global Decline of Reptiles, Déjà Vu Amphibians. BioScience. 50(8). 653–653. 1285 indexed citations breakdown →
17.
Ryan, Travis J.. (1998). Eurycea junaluska . Morphology. Herpetological review. 29(1). 163–163. 2 indexed citations
18.
Ryan, Travis J. & Raymond D. Semlitsch. (1998). Intraspecific heterochrony and life history evolution: Decoupling somatic and sexual development in a facultatively paedomorphic salamander. Proceedings of the National Academy of Sciences. 95(10). 5643–5648. 70 indexed citations
19.
Bader, Daniel, Raymond L. Barnhill, & Travis J. Ryan. (1986). Effect of externally applied skin surface forces on tissue vasculature.. PubMed. 67(11). 807–11. 49 indexed citations
20.
Francis, M. J. O., et al.. (1977). Preponderance of lysosomal bodies in cultured fibroblasts from patients with recessive epidermolysis bullosa dystrophica.. British Journal of Dermatology. 96(5). 521–531. 6 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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