Richard N. Pienaar

774 total citations
35 papers, 595 citations indexed

About

Richard N. Pienaar is a scholar working on Oceanography, Molecular Biology and Ecology. According to data from OpenAlex, Richard N. Pienaar has authored 35 papers receiving a total of 595 indexed citations (citations by other indexed papers that have themselves been cited), including 25 papers in Oceanography, 17 papers in Molecular Biology and 11 papers in Ecology. Recurrent topics in Richard N. Pienaar's work include Protist diversity and phylogeny (17 papers), Marine and coastal ecosystems (17 papers) and Microbial Community Ecology and Physiology (11 papers). Richard N. Pienaar is often cited by papers focused on Protist diversity and phylogeny (17 papers), Marine and coastal ecosystems (17 papers) and Microbial Community Ecology and Physiology (11 papers). Richard N. Pienaar collaborates with scholars based in South Africa, Japan and Malaysia. Richard N. Pienaar's co-authors include Takeo Horiguchi, Isao Inouye, Stuart D. Sym, Richard E. Norris, Monica Birkhead, Grant C. Pitcher, Trevor A. Probyn, Stewart Bernard, Mami Nomura and Masanobu Kawachi and has published in prestigious journals such as Current Biology, Journal of Phycology and Harmful Algae.

In The Last Decade

Richard N. Pienaar

35 papers receiving 535 citations

Peers — A (Enhanced Table)

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

Name h Career Trend Papers Cites
Richard N. Pienaar South Africa 16 388 323 289 118 72 35 595
R. N. Pienaar South Africa 13 296 0.8× 233 0.7× 206 0.7× 100 0.8× 45 0.6× 30 454
Jahn Throndsen Norway 20 713 1.8× 497 1.5× 637 2.2× 201 1.7× 104 1.4× 41 1.1k
J. C. Green United Kingdom 14 392 1.0× 192 0.6× 209 0.7× 92 0.8× 73 1.0× 19 535
Marie‐Josèphe Chrétiennot‐Dinet France 14 603 1.6× 511 1.6× 633 2.2× 92 0.8× 74 1.0× 19 955
Hans Rudolf Preisig Switzerland 15 360 0.9× 406 1.3× 380 1.3× 312 2.6× 131 1.8× 27 831
JA Raven United Kingdom 11 496 1.3× 104 0.3× 279 1.0× 96 0.8× 101 1.4× 12 663
I. A. N. Lucas United Kingdom 18 485 1.3× 366 1.1× 512 1.8× 191 1.6× 61 0.8× 27 869
J. Kristiansen Denmark 13 146 0.4× 179 0.6× 201 0.7× 149 1.3× 23 0.3× 24 394
Daniel E. Wujek United States 15 205 0.5× 348 1.1× 304 1.1× 135 1.1× 75 1.0× 93 687
Ann‐Eline Debeer Belgium 8 208 0.5× 153 0.5× 243 0.8× 188 1.6× 37 0.5× 11 465

Countries citing papers authored by Richard N. Pienaar

Since Specialization
Citations

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

Fields of papers citing papers by Richard N. Pienaar

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Richard N. Pienaar. 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 Richard N. Pienaar. The network helps show where Richard N. Pienaar may publish in the future.

Co-authorship network of co-authors of Richard N. Pienaar

This figure shows the co-authorship network connecting the top 25 collaborators of Richard N. Pienaar. A scholar is included among the top collaborators of Richard N. Pienaar 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 Richard N. Pienaar. Richard N. Pienaar 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.
Kawachi, Masanobu, Takuro Nakayama, Mami Nomura, et al.. (2021). Rappemonads are haptophyte phytoplankton. Current Biology. 31(11). 2395–2403.e4. 22 indexed citations
2.
Yamaguchi, Haruyo, Shoichiro Suda, Takeshi Nakayama, et al.. (2010). Taxonomy of Nephroselmis viridis sp. nov. (Nephroselmidophyceae, Chlorophyta), a sister marine species to freshwater N. olivacea. Journal of Plant Research. 124(1). 49–62. 12 indexed citations
3.
Probyn, Trevor A., Stewart Bernard, Grant C. Pitcher, & Richard N. Pienaar. (2009). Ecophysiological studies on Aureococcus anophagefferens blooms in Saldanha Bay, South Africa. Harmful Algae. 9(2). 123–133. 32 indexed citations
4.
Pienaar, Richard N., et al.. (2006). Description of a new dinoflagellate with a diatom endosymbiont, Durinskia capensis sp. nov. (Peridiniales, Dinophyceae) from South Africa. Journal of Plant Research. 120(2). 247–58. 41 indexed citations
5.
Horiguchi, Takeo & Richard N. Pienaar. (2000). Validation of bysmatrum arenicola horiguchi et pienaar, sp. nov. (dinophyceae)(Note). Journal of Phycology. 36(1). 237–237. 10 indexed citations
6.
Pienaar, Richard N., et al.. (1999). Marine Cyanophytes from the Western Cape, South Africa: Oscillatoriales. South African Journal of Botany. 65(1). 1–22. 13 indexed citations
7.
Pienaar, Richard N., et al.. (1997). Epipelic marine Cyanophytes of Bazaruto Island, lnhambane, Mozambique. South African Journal of Botany. 63(6). 459–464. 2 indexed citations
8.
Pienaar, Richard N., et al.. (1997). Marine Cyanophytes from the Western Cape, South Africa: Nostocales and Stigonematales. South African Journal of Botany. 63(6). 436–448. 3 indexed citations
9.
Birkhead, Monica & Richard N. Pienaar. (1995). THE FLAGELLAR APPARATUS OF CHRYSOCHROMULINA SP. (PRYMNESIOPHYCEAE)1. Journal of Phycology. 31(1). 96–108. 13 indexed citations
10.
Sym, Stuart D. & Richard N. Pienaar. (1995). Taxonomy ofPyramimonas obovataand other observations on the subgenusVestigiferaofPyramimonas(Prasinophyceae, Chlorophyta). Phycological Research. 43(1). 17–32. 6 indexed citations
11.
Birkhead, Monica & Richard N. Pienaar. (1994). The ultrastructure of Chrysochromulina brevifilum (Prymnesiophyceae). European Journal of Phycology. 29(4). 267–280. 6 indexed citations
12.
Horiguchi, Takeo & Richard N. Pienaar. (1994). Ultrastructure of a new marine sand-dwelling dinoflagellate,Gymnodinium quadrilobatumsp. nov. (Dinophyceae) with special reference to its endosymbiotic alga. European Journal of Phycology. 29(4). 237–245. 51 indexed citations
13.
Pienaar, Richard N. & Monica Birkhead. (1994). ULTRASTRUCTURE OF PRYMNESIUM NEMAMETHECUM SP. NOV. (PRYMNESIOPHYCEAE)1. Journal of Phycology. 30(2). 291–300. 16 indexed citations
14.
Sym, Stuart D. & Richard N. Pienaar. (1991). LIGHT AND ELECTRON MICROSCOPY OF A PUNCTATE SPECIES OF PYRAMIMONAS, P. MUCIFERA SP. NOV. (PRASINOPHYCEAE)1. Journal of Phycology. 27(2). 277–290. 16 indexed citations
15.
Inouye, Isao & Richard N. Pienaar. (1988). Light and electron microscope observations of the type species ofSyracosphaera, s. pulchra(Prymnesiophyceae). British Phycological Journal. 23(3). 205–217. 26 indexed citations
16.
Pienaar, Richard N., et al.. (1985). THE ULTRASTRUCTURE OF PYRAMIMONAS PSEUDOPARKEAE SP. NOV. (PRASINOPHYCEAE) FROM SOUTH AFRICA1. Journal of Phycology. 21(3). 428–447. 26 indexed citations
17.
Pienaar, Richard N.. (1976). The microanatomy ofHymenomonas lacunasp.nov. (Haptophyceae). Journal of the Marine Biological Association of the United Kingdom. 56(1). 1–11. 24 indexed citations
18.
Pienaar, Richard N.. (1976). The microanatomy ofSphaleromantis marinasp. nov. (Chrysophyceae). British Phycological Journal. 11(1). 83–92. 6 indexed citations
19.
Pienaar, Richard N.. (1971). Coccolith production inHymenomonas carterae. PROTOPLASMA. 73(2). 217–224. 15 indexed citations
20.
Pienaar, Richard N.. (1969). THE FINE STRUCTURE OF HYMENOMONAS (CRICOSPHAERA) CARTERAE. II. OBSERVATIONS ON SCALE AND COCCOLITH PRODUCTION. Journal of Phycology. 5(4). 321–331. 18 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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