Yumiko Obayashi

568 total citations
42 papers, 477 citations indexed

About

Yumiko Obayashi is a scholar working on Ecology, Astronomy and Astrophysics and Oceanography. According to data from OpenAlex, Yumiko Obayashi has authored 42 papers receiving a total of 477 indexed citations (citations by other indexed papers that have themselves been cited), including 26 papers in Ecology, 15 papers in Astronomy and Astrophysics and 13 papers in Oceanography. Recurrent topics in Yumiko Obayashi's work include Microbial Community Ecology and Physiology (12 papers), Origins and Evolution of Life (12 papers) and Marine and coastal ecosystems (11 papers). Yumiko Obayashi is often cited by papers focused on Microbial Community Ecology and Physiology (12 papers), Origins and Evolution of Life (12 papers) and Marine and coastal ecosystems (11 papers). Yumiko Obayashi collaborates with scholars based in Japan, United States and Vietnam. Yumiko Obayashi's co-authors include Satoru Suzuki, Eiichiro Tanoue, Takeo Kaneko, Kensei Kobayashi, Yukihiro Nojiri, Nobuhiko Handa, C. S. Wong, Koji Suzuki, Shin‐Ichi Kitamura and Palash Kumar Sarker and has published in prestigious journals such as International Journal of Molecular Sciences, Limnology and Oceanography and Frontiers in Microbiology.

In The Last Decade

Yumiko Obayashi

42 papers receiving 463 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Yumiko Obayashi Japan 12 251 207 104 78 61 42 477
Gayle N. Harris United Kingdom 8 227 0.9× 245 1.2× 121 1.2× 46 0.6× 124 2.0× 8 475
Elena Zaikova Canada 11 331 1.3× 102 0.5× 281 2.7× 38 0.5× 100 1.6× 17 560
Matthew Cooper United States 8 187 0.7× 93 0.4× 125 1.2× 22 0.3× 44 0.7× 16 381
B. C. Cho South Korea 14 411 1.6× 113 0.5× 383 3.7× 22 0.3× 79 1.3× 17 547
Y. Koga Japan 13 221 0.9× 48 0.2× 534 5.1× 100 1.3× 228 3.7× 19 849
Jonathan Eads United States 3 667 2.7× 201 1.0× 618 5.9× 15 0.2× 116 1.9× 4 914
Roger Coates United States 9 132 0.5× 45 0.2× 238 2.3× 9 0.1× 88 1.4× 20 579
K. Adachi Japan 11 260 1.0× 96 0.5× 328 3.2× 5 0.1× 36 0.6× 17 579
Allan S. Dietz United States 10 300 1.2× 172 0.8× 196 1.9× 21 0.3× 178 2.9× 12 516
Masayo Akagawa-Matsushita Japan 7 279 1.1× 35 0.2× 325 3.1× 18 0.2× 353 5.8× 9 738

Countries citing papers authored by Yumiko Obayashi

Since Specialization
Citations

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

Fields of papers citing papers by Yumiko Obayashi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Yumiko Obayashi

This figure shows the co-authorship network connecting the top 25 collaborators of Yumiko Obayashi. A scholar is included among the top collaborators of Yumiko Obayashi 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 Yumiko Obayashi. Yumiko Obayashi 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.
Hirai, Junya, et al.. (2025). Feeding habits and ecological roles of marine cladocerans in offshore zooplankton food-web in Suruga Bay, Japan. Journal of Oceanography. 82(1). 59–73. 1 indexed citations
2.
Kobayashi, Kensei, Yoshinori Takano, Yumiko Obayashi, et al.. (2022). Biomarkers in the Atacama Desert along the moisture gradient and the depth in the hyperarid zone: Phosphatase activity as trace of microbial activity. International Journal of Astrobiology. 21(5). 329–351. 4 indexed citations
3.
Takahashi, Daisuke, Takashi Yoshikawa, Rumi Sohrin, et al.. (2022). Cladoceran communities in offshore Suruga Bay, Japan: How are they formed?. Journal of Oceanography. 79(1). 49–59. 1 indexed citations
4.
Yoshikawa, Takashi, et al.. (2022). Seasonal abundance of marine cladocerans in the offshore waters of Suruga Bay, Japan. Plankton and Benthos Research. 17(1). 57–65. 4 indexed citations
5.
Kobayashi, Kensei, Hajime Mita, Yoko Kebukawa, et al.. (2021). Space Exposure of Amino Acids and Their Precursors during the Tanpopo Mission. Astrobiology. 21(12). 1479–1493. 7 indexed citations
6.
Yoshikawa, Takashi, et al.. (2021). Seasonal and vertical variations in phytoplankton photosynthetic parameters and primary production in Suruga Bay, Japan. Journal of Oceanography. 77(5). 797–818. 3 indexed citations
7.
Kebukawa, Yoko, et al.. (2020). Alteration and Stability of Complex Macromolecular Amino Acid Precursors in Hydrothermal Environments. Origins of Life and Evolution of Biospheres. 50(1-2). 15–33. 5 indexed citations
8.
Obayashi, Yumiko, et al.. (2020). Tetracycline Resistance Gene Profiles in Red Seabream (Pagrus major) Intestine and Rearing Water After Oxytetracycline Administration. Frontiers in Microbiology. 11. 1764–1764. 15 indexed citations
9.
10.
Kitamura, Shin‐Ichi, et al.. (2017). Release and Constancy of an Antibiotic Resistance Gene in Seawater under Grazing Stress by Ciliates and Heterotrophic Nanoflagellates. Microbes and Environments. 32(2). 174–179. 23 indexed citations
11.
Obayashi, Yumiko, et al.. (2015). Extracellular proteases are released by ciliates in defined seawater microcosms. Marine Environmental Research. 109. 95–102. 9 indexed citations
12.
Kobayashi, Kensei, Hajime Mita, Hikaru Yabuta, et al.. (2014). Space Exposure of Amino Acids and Their Precursors in the Tanpopo Mission Using the International Space Station. TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES AEROSPACE TECHNOLOGY JAPAN. 12(ists29). Pp_1–Pp_6. 3 indexed citations
13.
Chandru, Kuhan, Yumiko Obayashi, Takeo Kaneko, & Kensei Kobayashi. (2013). FORMATION OF AMINO ACID CONDENSATES PARTLY HAVING PEPTIDE BONDS IN A SIMULATED SUBMARINE HYDROTHERMAL ENVIRONMENT. 41(1). 24–28. 4 indexed citations
14.
Chandru, Kuhan, Eiichi Imai, Takeo Kaneko, Yumiko Obayashi, & Kensei Kobayashi. (2013). Survivability and Abiotic Reactions of Selected Amino Acids in Different Hydrothermal System Simulators. Origins of Life and Evolution of Biospheres. 43(2). 99–108. 12 indexed citations
15.
Kawai, Jun, Takeo Kaneko, Yumiko Obayashi, et al.. (2013). Titan Tholins as Amino Acid Precursors and Their Solubility in Possible Titan Liquidospheres. Chemistry Letters. 42(6). 633–635. 2 indexed citations
16.
Sarker, Palash Kumar, et al.. (2012). PHOTO-ALTERATION OF ISOVALINE AND ITS PRECURSOR 5-ETHYL-5-METHYLHYDANTOIN EXPOSED TO UV AND γ-RAY RADIATION. 40(1). 4–8. 1 indexed citations
17.
Kobayashi, Kensei, Palash Kumar Sarker, Yumiko Obayashi, et al.. (2012). Formation, Alteration and Delivery of Exogenous High Molecular Weight Organic Compounds: Objectives of the Tanpopo Mission from the Point of View of Chemical Evolution. TRANSACTIONS OF THE JAPAN SOCIETY FOR AERONAUTICAL AND SPACE SCIENCES AEROSPACE TECHNOLOGY JAPAN. 10(ists28). Tp_7–Tp_11. 3 indexed citations
18.
Kuwahara, H., et al.. (2012). The Use of Ascorbate as an Oxidation Inhibitor in Prebiotic Amino Acid Synthesis: A Cautionary Note. Origins of Life and Evolution of Biospheres. 42(6). 533–541. 6 indexed citations
19.
Takano, Yoshinori, et al.. (2012). Stability of Amino Acids and Related Compounds in Simulated Submarine Hydrothermal Systems. Bulletin of the Chemical Society of Japan. 85(5). 624–630. 5 indexed citations
20.
Obayashi, Yumiko, Eiichiro Tanoue, Koji Suzuki, et al.. (2001). Spatial and temporal variabilities of phytoplankton community structure in the northern North Pacific as determined by phytoplankton pigments. Deep Sea Research Part I Oceanographic Research Papers. 48(2). 439–469. 70 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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