Takehiko Ogata

2.2k total citations
73 papers, 1.9k citations indexed

About

Takehiko Ogata is a scholar working on Environmental Chemistry, Oceanography and Ecology. According to data from OpenAlex, Takehiko Ogata has authored 73 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 48 papers in Environmental Chemistry, 33 papers in Oceanography and 25 papers in Ecology. Recurrent topics in Takehiko Ogata's work include Marine Toxins and Detection Methods (44 papers), Marine and coastal ecosystems (30 papers) and Protist diversity and phylogeny (16 papers). Takehiko Ogata is often cited by papers focused on Marine Toxins and Detection Methods (44 papers), Marine and coastal ecosystems (30 papers) and Protist diversity and phylogeny (16 papers). Takehiko Ogata collaborates with scholars based in Japan, Malaysia and United States. Takehiko Ogata's co-authors include Masaaki Kodama, Po Teen Lim, Shigeru Sato, Kazuhiko Koike, Atsushi Kobiyama, Chui Pin Leaw, Yasuwo Fukuyo, Tadashi Maruyama, Takashi Ishimaru and Hisao Kamiya and has published in prestigious journals such as Chemical Physics Letters, Gene and Marine Pollution Bulletin.

In The Last Decade

Takehiko Ogata

72 papers receiving 1.8k citations

Peers

Takehiko Ogata

OCEAN

ECOLO

HTM

Yuichi Kotaki Japan

Beatriz Paz Spain

Pilar Riobó Spain

Veronica Beuzenberg New Zealand

Lincoln MacKenzie New Zealand

Paulo Vale Portugal

Carmelo R. Tomas United States

David M. Kulis United States

Jonathan R. Deeds United States

Marie‐Yasmine Dechraoui Bottein United States

Yuichi Kotaki Japan

Takehiko Ogata

1.3k ×1.1

790 ×0.9

OCEAN

646 ×0.8

609 ×1.0

ECOLO

256 ×1.6

HTM

Citations per year, relative to Takehiko Ogata Takehiko Ogata (= 1×) peers Yuichi Kotaki

Countries citing papers authored by Takehiko Ogata

Since Specialization

Citations

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

Fields of papers citing papers by Takehiko Ogata

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Takehiko Ogata

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

Ogata, Takehiko, et al.. (2021). Real-world measurement and mechanical-analysis-based verification of NO _x and CO ₂ emissions from an in-use heavy-duty vehicle. Atmospheric measurement techniques. 14(3). 2115–2126. 5 indexed citations

Kobiyama, Atsushi, Kazuho Ikeo, Md. Shaheed Reza, et al.. (2018). Metagenome-based diversity analyses suggest a strong locality signal for bacterial communities associated with oyster aquaculture farms in Ofunato Bay. Gene. 665. 149–154. 9 indexed citations

Kobiyama, Atsushi, Md. Shaheed Reza, Yuichiro Yamada, et al.. (2018). Seasonal changes in the communities of photosynthetic picoeukaryotes in Ofunato Bay as revealed by shotgun metagenomic sequencing. Gene. 665. 127–132. 4 indexed citations

Iida, S., Atsushi Kobiyama, Takehiko Ogata, & Akio Murakami. (2009). Identification of transcribed and persistent variants of the psbA gene carried by plastid minicircles in a dinoflagellate. Current Genetics. 55(5). 583–591. 7 indexed citations

Iida, S., Atsushi Kobiyama, Takehiko Ogata, & Akio Murakami. (2008). The D1 and D2 proteins of dinoflagellates: unusually accumulated mutations which influence on PSII photoreaction. Photosynthesis Research. 98(1-3). 415–425. 13 indexed citations

Thuộc, Chu Văn, Takehiko Ogata, Shigeru Sato, et al.. (2006). Seasonal variation of paralytic and amnesic shellfish toxicities in bivalves and microalgae in Haiphong area, Vietnam. 30(1). 111–115. 4 indexed citations

Koike, Kazuhiko, Kazuya Saitoh, Keisuke Imai, et al.. (2006). MECHANISM OF GAMETE FUSION INDINOPHYSIS FORTII(DINOPHYCEAE, DINOPHYTA): LIGHT MICROSCOPIC AND ULTRASTRUCTURAL OBSERVATIONS¹. Journal of Phycology. 42(6). 1247–1256. 14 indexed citations

Takahashi, Yoshiaki, Kiyotaka Takishita, Kazuhiko Koike, et al.. (2005). Development of Molecular Probes for Dinophysis (Dinophyceae) Plastid: A Tool to Predict Blooming and Explore Plastid Origin. Marine Biotechnology. 7(2). 95–103. 30 indexed citations

Kotaki, Yuichi, Kazuhiko Koike, Shigeru Sato, et al.. (1999). Confirmation of domoic acid production of Pseudo-nitzschia multiseries isolated from Ofunato Bay, Japan. Toxicon. 37(4). 677–682. 52 indexed citations

10.

Kodama, Masaaki, Takehiko Ogata, Setsuko Sakamoto, et al.. (1990). Production of paralytic shellfish toxins by a bacterium Moraxella sp. isolated from Protogonyaulax tamarensis. Toxicon. 28(6). 707–714. 62 indexed citations

11.

Ogata, Takehiko, Shigeru Sato, & Masaaki Kodama. (1989). Paralytic shellfish toxins in bivalves which are not associated with dinoflagellates. Toxicon. 27(11). 1241–1244. 8 indexed citations

12.

Ogata, Takehiko, Masaaki Kodama, & Takashi Ishimaru. (1987). Toxin production in the dinoflagellate Protogonyaulax tamarensis. Toxicon. 25(9). 923–928. 50 indexed citations

13.

Kodama, Masaaki & Takehiko Ogata. (1984). Toxicity of a fresh water puffer Tetrodon leiurus.. NIPPON SUISAN GAKKAISHI. 50(11). 1949–1951. 15 indexed citations

14.

Kodama, Masaaki, et al.. (1984). Toxicity of muscle and other organs of five species of puffer collected from the Pacific coast of Tohoku area of Japan.. NIPPON SUISAN GAKKAISHI. 50(4). 703–706. 23 indexed citations

15.

Kodama, Masaaki & Takehiko Ogata. (1983). Acrylic acid, as an antibacterial substance in scallop.. NIPPON SUISAN GAKKAISHI. 49(7). 1103–1107. 2 indexed citations

16.

Kodama, Masaaki, Takehiko Ogata, & Kunio Yamamori. (1982). Acute toxicity of zinc to rainbow trout Salmo gairdneri.. NIPPON SUISAN GAKKAISHI. 48(8). 1055–1058. 16 indexed citations

17.

Ogata, Takehiko, Masaaki Kodama, Yasuwo Fukuyo, et al.. (1982). The occurrence of Protogonyaulax spp. in Ofunato Bay, in association with the toxification of the scallop Patinopecten yessoensis.. NIPPON SUISAN GAKKAISHI. 48(4). 563–566. 48 indexed citations

18.

Oshima, Yasukatsu, Takeshi Yasumoto, Masaaki Kodama, et al.. (1982). Features of paralytic shelfish poison occurring in tohoku district.. NIPPON SUISAN GAKKAISHI. 48(4). 525–530. 43 indexed citations

19.

Kodama, Masaaki, Yasuwo Fukuyo, Takehiko Ogata, et al.. (1982). Comparison of toxicities of protogonyaulax cells of various sizes.. NIPPON SUISAN GAKKAISHI. 48(4). 567–571. 25 indexed citations

20.

Yamaguchi, Katsumi & Takehiko Ogata. (1978). Isolation and characterization of a biliprotein from the ovary of a turban shell, Turbo cornutus.. NIPPON SUISAN GAKKAISHI. 44(6). 631–637. 3 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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