Keiko Takikawa

504 total citations
11 papers, 437 citations indexed

About

Keiko Takikawa is a scholar working on Ecology, Evolution, Behavior and Systematics, Plant Science and Organic Chemistry. According to data from OpenAlex, Keiko Takikawa has authored 11 papers receiving a total of 437 indexed citations (citations by other indexed papers that have themselves been cited), including 9 papers in Ecology, Evolution, Behavior and Systematics, 8 papers in Plant Science and 2 papers in Organic Chemistry. Recurrent topics in Keiko Takikawa's work include Bryophyte Studies and Records (9 papers), Botany and Plant Ecology Studies (8 papers) and Lichen and fungal ecology (8 papers). Keiko Takikawa is often cited by papers focused on Bryophyte Studies and Records (9 papers), Botany and Plant Ecology Studies (8 papers) and Lichen and fungal ecology (8 papers). Keiko Takikawa collaborates with scholars based in Japan, India and New Zealand. Keiko Takikawa's co-authors include Yoshinori Asakawa, Motoo Tori, Masao Toyota, Tsunematsu Takemoto, H. G. Krishnamurty, Toshihiro Hashimoto, Yoshinori Shiobara, Reiko Matsuda, Mitsuaki Kodama and Leslie J. Harrison and has published in prestigious journals such as Phytochemistry, Tetrahedron Letters and Journal of Chemical Research Synopses.

In The Last Decade

Keiko Takikawa

11 papers receiving 415 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Keiko Takikawa Japan	10	259	244	94	93	60	11	437
Tadayuki Shimanuki Japan	13	180 0.7×	144 0.6×	62 0.7×	141 1.5×	119 2.0×	31	444
Makoto Takai Japan	11	120 0.5×	145 0.6×	67 0.7×	174 1.9×	65 1.1×	46	442
D. Erge Germany	12	219 0.8×	103 0.4×	90 1.0×	76 0.8×	107 1.8×	39	336
Egil Ramstad United States	10	117 0.5×	126 0.5×	56 0.6×	109 1.2×	55 0.9×	35	310
Claudia Paul Germany	13	83 0.3×	160 0.7×	40 0.4×	121 1.3×	29 0.5×	16	340
Carl‐Johan Widén Finland	16	295 1.1×	388 1.6×	92 1.0×	151 1.6×	91 1.5×	55	624
H. Schraudolf Germany	17	274 1.1×	471 1.9×	47 0.5×	383 4.1×	26 0.4×	69	730
Ingrid Hook Ireland	12	95 0.4×	219 0.9×	40 0.4×	264 2.8×	71 1.2×	29	481
José Coll Spain	14	54 0.2×	152 0.6×	173 1.8×	181 1.9×	41 0.7×	20	479
Franklin F. Fannin United States	12	572 2.2×	176 0.7×	72 0.8×	349 3.8×	50 0.8×	17	755

Countries citing papers authored by Keiko Takikawa

Since Specialization

Citations

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

Fields of papers citing papers by Keiko Takikawa

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of Keiko Takikawa

This figure shows the co-authorship network connecting the top 25 collaborators of Keiko Takikawa. A scholar is included among the top collaborators of Keiko Takikawa 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 Keiko Takikawa. Keiko Takikawa is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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11 of 11 papers shown

Tori, Motoo, Masakazu Sono, Keiko Takikawa, et al.. (1999). Oxidation Reactions of Marchantin A Trimethyl Ether and Some Aromatic Compounds using m-Chloroperbenzoic Acid. Formation of Muconic Acid Ester and m-Chlorobenzoate. Journal of Chemical Research Synopses. 470–471. 1 indexed citations

Asakawa, Yoshinori, et al.. (1991). Prenyl bibenzyls from the liverworts Radula perrottetii and Radula complanata. Phytochemistry. 30(1). 235–251. 73 indexed citations

Asakawa, Yoshinori, et al.. (1987). Sesqui- and diterpenoids from the liverworts Porella densifolia subsp. appendiculata and Porella densifolia var. fallax. Phytochemistry. 26(4). 1019–1022. 11 indexed citations

Asakawa, Yoshinori, et al.. (1987). Cyclic bis(bibenzyls) and related compounds from the liverworts Marchantia polymorpha and Marchantia palmata. Phytochemistry. 26(6). 1811–1816. 81 indexed citations

Asakawa, Yoshinori, Keiko Takikawa, & Motoo Tori. (1987). Bibenzyl derivatives from the Australian liverwort Frullania falciloba. Phytochemistry. 26(4). 1023–1025. 31 indexed citations

Toyota, M., Motoo Tori, Keiko Takikawa, et al.. (1986). ChemInform Abstract: Perrottetins E, F and G from Radula perrottetii (Liverwort). Isolation, Structure Determination and Synthesis of Perrottetin E.. Chemischer Informationsdienst. 17(15). 34 indexed citations

Asakawa, Yoshinori, Keiko Takikawa, Motoo Tori, & Ella O. Campbell. (1986). Isotachin c and balantiolide two aromatic compounds from the new zealand liverwort balantiopsis rosea. Phytochemistry. 25(11). 2543–2546. 20 indexed citations

Tori, Motoo, Masao Toyota, Leslie J. Harrison, Keiko Takikawa, & Yoshinori Asakawa. (1985). Total assignment of 1H and 13C NMR spectra of marchantins isolated from liverworts and its application to structure determination of two new macrocyclic bis(bibenzyls) from and. Tetrahedron Letters. 26(39). 4735–4738. 41 indexed citations

Toyota, Masao, Motoo Tori, Keiko Takikawa, et al.. (1985). Perrottetins E, F, and G from (liverwort)--isolation, structure determination, and synthesis of perrottetin e. Tetrahedron Letters. 26(49). 6097–6100. 53 indexed citations

10.

Asakawa, Yoshinori, Masao Toyota, Reiko Matsuda, Keiko Takikawa, & Tsunematsu Takemoto. (1983). Distribution of novel cyclic bisbibenzyls in Marchantia and Riccardia species. Phytochemistry. 22(6). 1413–1415. 49 indexed citations

11.

Asakawa, Yoshinori, Keiko Takikawa, Masao Toyota, & Tsunematsu Takemoto. (1982). Novel bibenzyl derivatives and ent-cuparene-type sesquiterpenoids from Radula species. Phytochemistry. 21(10). 2481–2490. 43 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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