Junichi Okuyama

1.1k total citations
50 papers, 641 citations indexed

About

Junichi Okuyama is a scholar working on Nature and Landscape Conservation, Global and Planetary Change and Ecology. According to data from OpenAlex, Junichi Okuyama has authored 50 papers receiving a total of 641 indexed citations (citations by other indexed papers that have themselves been cited), including 42 papers in Nature and Landscape Conservation, 27 papers in Global and Planetary Change and 25 papers in Ecology. Recurrent topics in Junichi Okuyama's work include Turtle Biology and Conservation (31 papers), Amphibian and Reptile Biology (16 papers) and Marine animal studies overview (13 papers). Junichi Okuyama is often cited by papers focused on Turtle Biology and Conservation (31 papers), Amphibian and Reptile Biology (16 papers) and Marine animal studies overview (13 papers). Junichi Okuyama collaborates with scholars based in Japan, United States and Canada. Junichi Okuyama's co-authors include Nobuaki Arai, Masato Kobayashi, Osamu Abe, Yuuki Kawabata, Hideaki Nishizawa, Kenzo Yoseda, Takeo Hondoh, Shuji Fujita, Akira Hori and Takuji Noda and has published in prestigious journals such as Journal of Geophysical Research Atmospheres, PLoS ONE and Scientific Reports.

In The Last Decade

Junichi Okuyama

47 papers receiving 611 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Junichi Okuyama Japan 18 430 339 299 77 54 50 641
Olle Karlsson Sweden 17 183 0.4× 560 1.7× 357 1.2× 83 1.1× 31 0.6× 21 730
Heather L. Haas United States 15 393 0.9× 541 1.6× 413 1.4× 20 0.3× 44 0.8× 33 727
Andrew Lowther Norway 19 248 0.6× 739 2.2× 334 1.1× 168 2.2× 126 2.3× 60 955
Randy J. Brown United States 16 408 0.9× 365 1.1× 365 1.2× 80 1.0× 43 0.8× 41 754
Eric D. Stolen United States 13 203 0.5× 392 1.2× 171 0.6× 21 0.3× 84 1.6× 46 536
Andreas Demetropoulos Spain 14 381 0.9× 298 0.9× 318 1.1× 17 0.2× 49 0.9× 17 666
Chantelle Burke Canada 15 172 0.4× 632 1.9× 283 0.9× 45 0.6× 134 2.5× 24 761
RA Myers Canada 12 557 1.3× 550 1.6× 630 2.1× 49 0.6× 73 1.4× 13 971
Alejandro D. Buren Canada 15 222 0.5× 438 1.3× 360 1.2× 73 0.9× 46 0.9× 19 616
C. Ricketts United Kingdom 16 229 0.5× 631 1.9× 347 1.2× 89 1.2× 174 3.2× 21 812

Countries citing papers authored by Junichi Okuyama

Since Specialization
Citations

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

Fields of papers citing papers by Junichi Okuyama

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Junichi Okuyama

This figure shows the co-authorship network connecting the top 25 collaborators of Junichi Okuyama. A scholar is included among the top collaborators of Junichi Okuyama 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 Junichi Okuyama. Junichi Okuyama 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.
Noguchi, Naoya, et al.. (2025). Efficient wildlife monitoring: Deep learning-based detection and counting of green turtles in coastal areas. Ecological Informatics. 86. 103009–103009. 5 indexed citations
2.
3.
Okuyama, Junichi, et al.. (2024). A rapid increase in tropical species of grouper (Perciformes: Serranidae) in the temperate waters, the Goto Islands, Japan. PLoS ONE. 19(9). e0308715–e0308715. 1 indexed citations
4.
Okuyama, Junichi, et al.. (2022). A validation of abstracted dive profiles relayed via the Argos satellite system: a case study of a loggerhead turtle. Animal Biotelemetry. 10(1). 3 indexed citations
5.
Okuyama, Junichi, et al.. (2020). Heart rate and cardiac response to exercise during voluntary dives in captive sea turtles (Cheloniidae). Biology Open. 9(2). 11 indexed citations
6.
Okuyama, Junichi, et al.. (2019). Post-release horizontal and vertical behavior and philopatry of deepwater longtail red snapper Etelis coruscans around a bank. Fisheries Science. 85(2). 361–368. 7 indexed citations
7.
Shiode, Daisuke, et al.. (2019). Behavioural characteristics of loggerhead turtles (Caretta caretta) in a submerged bag net of a setnet observed in a bycatch simulation and the development of a turtle releasing device. Aquatic Conservation Marine and Freshwater Ecosystems. 29(12). 2107–2115. 2 indexed citations
8.
Nanami, Atsushi, Taku Sato, Yuuki Kawabata, & Junichi Okuyama. (2017). Spawning aggregation of white-streaked grouperEpinephelus ongus: spatial distribution and annual variation in the fish density within a spawning ground. PeerJ. 5. e3000–e3000. 22 indexed citations
9.
Okuyama, Junichi, et al.. (2014). Difference in Activity Corresponding to Changing Water Temperature among Juvenile Green Sea Turtles. Kyoto University Research Information Repository (Kyoto University). 2. 66–69. 1 indexed citations
10.
Okuyama, Junichi, Takuji Noda, Satoko Kimura, et al.. (2013). Ethogram of Immature Green Turtles: Behavioral Strategies for Somatic Growth in Large Marine Herbivores. PLoS ONE. 8(6). e65783–e65783. 28 indexed citations
11.
Okuyama, Junichi, Takuji Noda, Masato Kobayashi, et al.. (2013). Correction: Ethogram of Immature Green Turtles: Behavioral Strategies for Somatic Growth in Large Marine Herbivores. PLoS ONE. 8(7). 2 indexed citations
12.
Kawabata, Yuuki, et al.. (2010). Effects of a tropical cyclone on the distribution of hatchery‐reared black‐spot tuskfish Choerodon schoenleinii determined by acoustic telemetry. Journal of Fish Biology. 77(3). 627–642. 14 indexed citations
13.
Nishizawa, Hideaki, Junichi Okuyama, Masato Kobayashi, Osamu Abe, & Nobuaki Arai. (2010). Comparative Phylogeny and Historical Perspectives on Population Genetics of the Pacific Hawksbill (Eretmochelys imbricata) and Green Turtles (Chelonia mydas), Inferred from Feeding Populations in the Yaeyama Islands, Japan. ZOOLOGICAL SCIENCE. 27(1). 14–14. 23 indexed citations
14.
Kawabata, Yuuki, et al.. (2010). Preliminary result of the relationship between the breathing frequency and dynamic body acceleration. Kyoto University Research Information Repository (Kyoto University). 11–14. 1 indexed citations
15.
Fujita, Shuji, Junichi Okuyama, Akira Hori, & Takeo Hondoh. (2009). Metamorphism of stratified firn at Dome Fuji, Antarctica: A mechanism for local insolation modulation of gas transport conditions during bubble close-off. AGU Fall Meeting Abstracts. 2009. 2 indexed citations
16.
Nishizawa, Hideaki, Junichi Okuyama, Osamu Abe, et al.. (2009). Genetic diversity of the green turtle nesting populations in Yaeyama Archipelago, Japan. Genes. 9(2). 2 indexed citations
17.
Okuyama, Junichi, et al.. (2009). Wild versus head-started hawksbill turtles Eretmochelys imbricata: post-release behavior and feeding adaptions. Endangered Species Research. 10. 181–190. 28 indexed citations
18.
Okuyama, Junichi, Osamu Abe, Hideaki Nishizawa, et al.. (2009). Ontogeny of the dispersal migration of green turtle (Chelonia mydas) hatchlings. Journal of Experimental Marine Biology and Ecology. 379(1-2). 43–50. 27 indexed citations
19.
20.
Okuyama, Junichi, et al.. (2006). Dispersal movements of green turtle (Chelonia mydas) reared for one month after emergence. Kyoto University Research Information Repository (Kyoto University). 17–19.

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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