N. van Rooyen

2.5k total citations
114 papers, 1.9k citations indexed

About

N. van Rooyen is a scholar working on Nature and Landscape Conservation, Plant Science and Forestry. According to data from OpenAlex, N. van Rooyen has authored 114 papers receiving a total of 1.9k indexed citations (citations by other indexed papers that have themselves been cited), including 85 papers in Nature and Landscape Conservation, 73 papers in Plant Science and 36 papers in Forestry. Recurrent topics in N. van Rooyen's work include Ecology and Vegetation Dynamics Studies (83 papers), Botany and Plant Ecology Studies (63 papers) and African Botany and Ecology Studies (21 papers). N. van Rooyen is often cited by papers focused on Ecology and Vegetation Dynamics Studies (83 papers), Botany and Plant Ecology Studies (63 papers) and African Botany and Ecology Studies (21 papers). N. van Rooyen collaborates with scholars based in South Africa, United States and Germany. N. van Rooyen's co-authors include Suzanne J. Milton, Florian Jeltsch, M.W. van Rooyen, G.K. Theron, W. R. J. Dean, G.J. Bredenkamp, Wayne Matthews, Jacobus du P. Bothma, A.E. van Wyk and N. Grobbelaar and has published in prestigious journals such as Journal of Ecology, Oecologia and Journal of Applied Ecology.

In The Last Decade

N. van Rooyen

111 papers receiving 1.7k citations

Peers

N. van Rooyen
Fred E. Smeins United States
KC Hodgkinson Australia
Jelte van Andel Netherlands
Margaret H. Friedel Australia
Mario Gutman Israel
Rex D. Pieper United States
G.J. Bredenkamp South Africa
D. Welch United Kingdom
W. A. Laycock United States
Barbara Allen‐Diaz United States
Fred E. Smeins United States
N. van Rooyen
Citations per year, relative to N. van Rooyen N. van Rooyen (= 1×) peers Fred E. Smeins

Countries citing papers authored by N. van Rooyen

Since Specialization
Citations

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

Fields of papers citing papers by N. van Rooyen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of N. van Rooyen

This figure shows the co-authorship network connecting the top 25 collaborators of N. van Rooyen. A scholar is included among the top collaborators of N. van Rooyen 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 N. van Rooyen. N. van Rooyen 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.
Rooyen, M.W. van, et al.. (2022). Carbon of Chaillu forests based on a phytosociological analysis in Republic of Congo, more than meets the eye?. African Journal of Ecology. 61(1). 48–63. 1 indexed citations
2.
Merwe, Helga van der, et al.. (2008). Vegetation map of the Hantam-Tanqua-Roggeveld. 94(3). 132–133. 1 indexed citations
3.
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Bothma, Jacobus du P., et al.. (2002). Assessment of the woody vegetation of Ol Choro Oiroua, Masai Mara, Kenya. African Journal of Ecology. 40(1). 76–83. 8 indexed citations
5.
Bothma, Jacobus du P., et al.. (2000). Estimation of the herbaceous standing crop of the grassy plains of OI Choro Oiroua in the Masai Mara region of Kenya. African Journal of Range and Forage Science. 17(1-3). 115–118. 1 indexed citations
6.
Weber, Gerhard E., Florian Jeltsch, N. van Rooyen, & Suzanne J. Milton. (1998). Simulated long‐term vegetation response to grazing heterogeneity in semi‐arid rangelands. Journal of Applied Ecology. 35(5). 687–699. 70 indexed citations
7.
Rooyen, N. van & Hugo Bezuidenhout. (1997). New records of flowering plants and ferns from the Kalahari Gemsbok National Park. Koedoe. 40(2). 5 indexed citations
8.
Westfall, R. H., G.K. Theron, & N. van Rooyen. (1997). Objective classification and analysis of vegetation data. Plant Ecology. 132(2). 137–154. 9 indexed citations
9.
Eckhardt, H.C., N. van Rooyen, & G.J. Bredenkamp. (1997). Plant communities of the forests, woodlands and thickets in northern KwaZulu-Natal. Koedoe. 40(1). 2 indexed citations
10.
Rooyen, N. van, et al.. (1996). Habitat partitioning by ungulates on a game ranch in the Mopani veld. African Journal of Wildlife Research. 26(4). 117–122. 21 indexed citations
11.
Jeltsch, Florian, Suzanne J. Milton, W. R. J. Dean, & N. van Rooyen. (1996). Tree Spacing and Coexistence in Semiarid Savannas. Journal of Ecology. 84(4). 583–583. 196 indexed citations
12.
Bredenkamp, G.J., et al.. (1995). The phytosociology of the grasslands of the Ba and Ib land types in the Pretoria–Witbank–Heidelberg area. South African Journal of Botany. 61(3). 123–133. 5 indexed citations
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Eckhardt, H.C., N. van Rooyen, & G.J. Bredenkamp. (1993). Use of Braun‐Blanquet data for the assessment of veld condition and grazing capacity in grassland. African Journal of Range and Forage Science. 10(1). 41–46. 6 indexed citations
15.
Bredenkamp, G.J., et al.. (1992). The hydrophilic vegetation of the Vredefort – Kroonstad – Lindley – Heilbron area, northern Orange Free State. South African Journal of Botany. 58(4). 231–235. 9 indexed citations
16.
Peel, Mike, D. Grossman, & N. van Rooyen. (1991). Determinants of herbaceous plant species composition on a number of ranches in the north‐western Transvaal. Journal of the Grassland Society of Southern Africa. 8(3). 99–102. 2 indexed citations
17.
Rooyen, M.W. van, N. Grobbelaar, G.K. Theron, & N. van Rooyen. (1991). The ephemerals of Namaqualand: effects of photoperiod, temperature and moisture stress on development and flowering of three species. Journal of Arid Environments. 20(1). 15–29. 21 indexed citations
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Rooyen, N. van, et al.. (1980). Vegetation of the lower Kuiseb River. 1980(4). 327–345. 26 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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