S.A. Viljoen

633 total citations
17 papers, 492 citations indexed

About

S.A. Viljoen is a scholar working on Ecology, Evolution, Behavior and Systematics, Ecology and Soil Science. According to data from OpenAlex, S.A. Viljoen has authored 17 papers receiving a total of 492 indexed citations (citations by other indexed papers that have themselves been cited), including 11 papers in Ecology, Evolution, Behavior and Systematics, 7 papers in Ecology and 5 papers in Soil Science. Recurrent topics in S.A. Viljoen's work include Invertebrate Taxonomy and Ecology (9 papers), Composting and Vermicomposting Techniques (5 papers) and Aquatic Invertebrate Ecology and Behavior (4 papers). S.A. Viljoen is often cited by papers focused on Invertebrate Taxonomy and Ecology (9 papers), Composting and Vermicomposting Techniques (5 papers) and Aquatic Invertebrate Ecology and Behavior (4 papers). S.A. Viljoen collaborates with scholars based in South Africa. S.A. Viljoen's co-authors include A.J. Reinecke and J. G. Van As and has published in prestigious journals such as Soil Biology and Biochemistry, Hydrobiologia and Biology and Fertility of Soils.

In The Last Decade

S.A. Viljoen

17 papers receiving 430 citations

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
S.A. Viljoen South Africa	13	240	197	126	70	63	17	492
Tunira Bhadauria India	10	222 0.9×	184 0.9×	69 0.5×	30 0.4×	15 0.2×	15	394
K. E. Fletcher United States	8	184 0.8×	133 0.7×	80 0.6×	43 0.6×	15 0.2×	17	527
C.W. Davoren Australia	15	301 1.3×	183 0.9×	101 0.8×	13 0.2×	13 0.2×	28	542
John Buckerfield Australia	8	177 0.7×	188 1.0×	89 0.7×	13 0.2×	8 0.1×	9	295
E. J. Bechinski United States	12	54 0.2×	74 0.4×	45 0.4×	24 0.3×	31 0.5×	28	451
José C. Patrón Mexico	7	275 1.1×	234 1.2×	112 0.9×	9 0.1×	9 0.1×	10	424
Donna C. Fare United States	11	76 0.3×	54 0.3×	77 0.6×	37 0.5×	8 0.1×	52	413
Clément Bardon France	7	165 0.7×	62 0.3×	67 0.5×	23 0.3×	7 0.1×	8	391
Nina Montoya‐Ciriaco Mexico	5	203 0.8×	34 0.2×	186 1.5×	16 0.2×	30 0.5×	9	424
Lise Thouvenot Germany	11	42 0.2×	81 0.4×	156 1.2×	12 0.2×	25 0.4×	20	385

Countries citing papers authored by S.A. Viljoen

Since Specialization

Citations

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

Fields of papers citing papers by S.A. Viljoen

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by S.A. Viljoen. 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 S.A. Viljoen. The network helps show where S.A. Viljoen may publish in the future.

Co-authorship network of co-authors of S.A. Viljoen

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

All Works

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17 of 17 papers shown

Viljoen, S.A. & A.J. Reinecke. (1992). The temperature requirements of the epigeic earthworm species Eudrilus eugeniae (oligochaeta) — a laboratory study. Soil Biology and Biochemistry. 24(12). 1345–1350. 35 indexed citations

Viljoen, S.A., et al.. (1992). Moisture requirements in the life cycle of Perionyx excavatus (Oligochaeta). Soil Biology and Biochemistry. 24(12). 1333–1340. 22 indexed citations

Reinecke, A.J., et al.. (1992). The suitability of Eudrilus eugeniae, perionyx excavatus and Eisenia fetida (Oligochaeta) for vermicomposting in southern africa in terms of their temperature requirements. Soil Biology and Biochemistry. 24(12). 1295–1307. 136 indexed citations

Reinecke, A.J. & S.A. Viljoen. (1991). A comparison of the biology of Eisenia fetida and Eisenia andrei (Oligochaeta). Biology and Fertility of Soils. 11(4). 295–300. 41 indexed citations

Reinecke, A.J. & S.A. Viljoen. (1990). The influence of worm density on growth and cocoon production of the compost worm Eisenia fetida (Oligochaeta). 27(2). 221–230. 32 indexed citations

Viljoen, S.A. & A.J. Reinecke. (1990). Moisture preferences, growth and reproduction of the African nightcrawler,Eudrilus eugeniae(Oligochaeta). South African Journal of Zoology. 25(3). 155–160. 7 indexed citations

Reinecke, A.J. & S.A. Viljoen. (1990). The influence of feeding patterns on growth and reproduction of the vermicomposting earthworm Eisenia fetida (Oligochaeta). Biology and Fertility of Soils. 10(3). 184–187. 52 indexed citations

Reinecke, A.J., et al.. (1990). Life Cycle of the Oriental Compost WormPerionyx Excavatus(Oligochaeta). South African Journal of Zoology. 25(1). 41–45. 27 indexed citations

Viljoen, S.A. & A.J. Reinecke. (1989). Life-cycle of the african nightcrawler,Eudrilus eugeniae(Oligochaeta). South African Journal of Zoology. 24(1). 27–32. 38 indexed citations

10.

Viljoen, S.A. & A.J. Reinecke. (1989). Moisture and growth, maturation and cocoon production of Eudrilus eugeniae (Oligochaeta). 26(3). 291–303. 13 indexed citations

11.

Viljoen, S.A. & A.J. Reinecke. (1988). The number, size and growth of hatchlings of the African nightcrawler, Eudrilus eugeniae (Oligochaeta). 25(2). 225–236. 7 indexed citations

12.

Reinecke, A.J. & S.A. Viljoen. (1988). Reproduction of the African earthworm, Eudrilus eugeniae (Oligochaeta) ? cocoons. Biology and Fertility of Soils. 7(1). 21 indexed citations

13.

Viljoen, S.A. & J. G. Van As. (1987). Notes on the morphology and asexual reproductive processes of sessile peritrichs. Hydrobiologia. 154(1). 75–86. 9 indexed citations

14.

Viljoen, S.A.. (1986). Use of space in southern African tree squirrels. Mammalia. 50(3). 6 indexed citations

15.

Viljoen, S.A. & J. G. Van As. (1985). Sessile peritrichs (Ciliophora: Peritricha) from freshwater fish in the Transvaal, South Africa. South African Journal of Zoology. 20(3). 79–96. 14 indexed citations

16.

As, J. G. Van & S.A. Viljoen. (1984). A taxonomic study of sessile peritrichs (Ciliophora: Peritricha) associated with crustacean fish ectoparasites in South Africa. South African Journal of Zoology. 19(4). 275–279. 14 indexed citations

17.

Viljoen, S.A. & J. G. Van As. (1983). A TAXONOMIC STUDY OF SESSILE PERITRICHIANS OF A SMALL IMPOUNDMENT WITH NOTES ON THEIR SUBSTRATE PREFERENCES. 9(1). 33–42. 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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