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Journal articles on the topic 'Richtersveld'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Oberlander, Kenneth Carl, Francois Roets, and Leanne Laurette Dreyer. "Discovery of substantial Oxalis (Oxalidaceae) diversity and endemism in an arid biodiversity hotspot." Phytotaxa 181, no. 2 (2014): 79. http://dx.doi.org/10.11646/phytotaxa.181.2.2.

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Despite globally acknowledged diversity levels, the flora of the arid Richtersveld of South Africa remains poorly known for certain plant lineages, including the eudicot genus Oxalis. Cryptic habit, inaccessible and harsh terrain and the lack of focussed systematic attention has led to the assumption that the region is depauperate in this genus. However, recent exploration proved quite the opposite and revealed a wealth of Oxalis species, including at least ten undescribed species and many significant range extensions of known taxa. We are in the process of describing these new species, but an

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2

Wipfler, Benjamin, Tobias Theska, and Reinhard Predel. "Mantophasmatodea from the Richtersveld in South Africa with description of two new genera and species." ZooKeys 746 (March 27, 2018): 137–60. http://dx.doi.org/10.3897/zookeys.746.14885.

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Two new species and two new genera (Kuboesphasma, Minutophasma) of Mantophasmatodea that occur in the Richtersveld region of South Africa are described. Kuboesphasmacompactum gen. n., sp. n. was found only in a small area near the village of Kuboes, while Minutophasmarichtersveldense gen. n., sp. n. apparently inhabits a larger area in the Richtersveld. With these two new species, a total of four different mantophasmatodeans are known to live in this area. This is a remarkable exception to the remaining representatives of this order, where even a common occurrence of only two species is rare.

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3

Wipfler, Benjamin, Tobias Theska, and Reinhard Predel. "Mantophasmatodea from the Richtersveld in South Africa with description of two new genera and species." ZooKeys 746 (March 27, 2018): 137–60. https://doi.org/10.3897/zookeys.746.14885.

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Two new species and two new genera (Kuboesphasma, Minutophasma) of Mantophasmatodea that occur in the Richtersveld region of South Africa are described. Kuboesphasma compactum gen. n., sp. n. was found only in a small area near the village of Kuboes, while Minutophasma richtersveldense gen. n., sp. n. apparently inhabits a larger area in the Richtersveld. With these two new species, a total of four different mantophasmatodeans are known to live in this area. This is a remarkable exception to the remaining representatives of this order, where even a common occurrence of only two species is rare

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4

Germishuizen, G. "FABACEAE." Bothalia 17, no. 2 (1987): 181–82. http://dx.doi.org/10.4102/abc.v17i2.1029.

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5

Pienaar, B. J., and A. Nicholas. "BRASSICACEAE." Bothalia 18, no. 2 (1988): 183–85. http://dx.doi.org/10.4102/abc.v18i2.1004.

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6

Williamson, G. "HYACINTHACEAE." Bothalia 28, no. 1 (1998): 62–65. http://dx.doi.org/10.4102/abc.v28i1.620.

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7

Snijman, D. A., and G. Williamson. "AMARYLLIDACAE: AMARYLLIDEAE." Bothalia 28, no. 2 (1998): 192–96. http://dx.doi.org/10.4102/abc.v28i2.640.

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8

Bruyns, P. "The Orchidaceae of the Richtersveld." South African Journal of Botany 55, no. 5 (1989): 492–97. http://dx.doi.org/10.1016/s0254-6299(16)31146-2.

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9

ROETS, FRANCOIS, and KENNETH C. OBERLANDER. "Oxalis dreyerae (Oxalidaceae), a new species from South Africa." Phytotaxa 286, no. 2 (2016): 99. http://dx.doi.org/10.11646/phytotaxa.286.2.4.

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Oxalis dreyerae, a new species from the arid Richtersveld region of South Africa, is described. It is most similar to O. inconspicua from which it differs, among others, by having a larger plant body, larger and showier flowers with a broadly trumpet-shaped tube, much larger leaflets, petioles that are thicker than the peduncles, much larger lanceolate sepals and short, stubby teeth on the longer filaments. Its placement within the O. flava clade is supported by nrDNA ITS sequence evidence, which is also consistent with a close relationship to O. inconspicua. Oxalis dreyerae represents the eig

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10

Dreyer, Léanne L., Francois Roets, and Kenneth C. Oberlander. "Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa." Phytotaxa 89, no. 2 (2013): 53–63. https://doi.org/10.11646/phytotaxa.89.2.2.

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Dreyer, Léanne L., Roets, Francois, Oberlander, Kenneth C. (2013): Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa. Phytotaxa 89 (2): 53-63, DOI: 10.11646/phytotaxa.89.2.2, URL: http://dx.doi.org/10.11646/phytotaxa.89.2.2

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11

L. DREYER, LÉANNE, FRANCOIS ROETS, and KENNETH C. OBERLANDER. "Two new Oxalis (Oxalidaceae) species, including 5 varieties, from the Richtersveld of South Africa." Phytotaxa 314, no. 2 (2017): 231. http://dx.doi.org/10.11646/phytotaxa.314.2.4.

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Two new species of Oxalis (Oxalidaceae) from the Richtersveld are described, namely Oxalis canaliculata and O. magnifolia. These widespread species are morphologically distinct and easily identified, but both contain populations in which individuals consistently differ morphologically from typical varieties. The typical variety of Oxalis canaliculata is widespread throughout the Richtersveld, while O. canaliculata var. trifoliolata is known from a single population and O. canaliculata var. graniticola is known only from granite outcrops. Oxalis magnifolia includes the typical variety that is w

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12

Dreyer, Léanne L., Francois Roets, and Kenneth C. Oberlander. "Two new Oxalis (Oxalidaceae) species, including 5 varieties, from the Richtersveld of South Africa." Phytotaxa 314, no. 2 (2017): 231–40. https://doi.org/10.11646/phytotaxa.314.2.4.

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Dreyer, Léanne L., Roets, Francois, Oberlander, Kenneth C. (2017): Two new Oxalis (Oxalidaceae) species, including 5 varieties, from the Richtersveld of South Africa. Phytotaxa 314 (2): 231-240, DOI: 10.11646/phytotaxa.314.2.4, URL: http://dx.doi.org/10.11646/phytotaxa.314.2.4

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13

Borovec, R., and M. Meregalli. "Soil insect research in South Africa. 1. A new genus of terricolous weevils with four new species from the Richtersveld National Park (Coleoptera: Curculionidae: Entiminae: Trachyphloeini)." Zootaxa 3646, no. 5 (2013): 501–15. https://doi.org/10.11646/zootaxa.3646.5.1.

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Borovec, R., Meregalli, M. (2013): Soil insect research in South Africa. 1. A new genus of terricolous weevils with four new species from the Richtersveld National Park (Coleoptera: Curculionidae: Entiminae: Trachyphloeini). Zootaxa 3646 (5): 501-515, DOI: 10.11646/zootaxa.3646.5.1

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14

Reid, D. L., and H. Minnaar. "Lithostratigraphy of the Vuurdood Subsuite, an early mafic-ultramafic phase of the Palaeoproterozoic Vioolsdrif Intrusive Suite, Richtersveld Magmatic Arc, Northern Cape Province." South African Journal of Geology 124, no. 3 (2021): 805–14. http://dx.doi.org/10.25131/sajg.124.0049.

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Abstract Mafic-ultramafic plutonic intrusions form an early phase in the emplacement of the predominantly granitic Vioolsdrif Suite, which together with its extrusive carapace, the Orange River Group, form the Richtersveld Magmatic Arc, a Palaeoproterozoic crustal segment formed between 1910 and 1865 Ma. Their lithologic character and distinctive dark weathering features in the mountain desert landscape of the Richtersveld, neighbouring regions of the Northern Cape Province and southern Namibia, make them a separate mappable unit in what is a predominantly granitic terrain. The name of the sub

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15

Jogee, B. A., G. M. Bybee, L. J. Robb, et al. "Assessing the geological relationships between the mafic-ultramafic intrusion in the Haib area and the Vuurdood Subsuite, Richtersveld Subprovince." South African Journal of Geology 127, no. 1 (2024): 55–70. http://dx.doi.org/10.25131/sajg.127.0011.

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Abstract The Haib porphyry copper deposit is situated in the Richtersveld Subprovince and is host to unique Palaeoproterozoic porphyry copper mineralisation in Namibia. Several lines of evidence, including machine-learning geothermobarometry, indicate that the deposit is exposed at mid- to upper-crustal levels, as constrained from average pressure and temperature estimates of 4 kbar and 870°C, respectively. The Haib porphyry copper deposit is associated with, and is in close proximity to, a mafic-ultramafic intrusion named the Kokerboom Intrusion (KI) in this study. Together with several other

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16

Marais, Elizabeth M. "Pelargonium tripalmatum (Geraniaceae), a new species from the Richtersveld." South African Journal of Botany 62, no. 5 (1996): 225–27. http://dx.doi.org/10.1016/s0254-6299(15)30648-7.

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17

HAMMER, STEVEN. "An Erumpent New Species of Bulbine (Asphodelaceae) from the Richtersveld." Cactus and Succulent Journal 77, no. 3 (2005): 127–29. http://dx.doi.org/10.2985/0007-9367(2005)77[127:aensob]2.0.co;2.

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18

Williamson, Graham. "A New Eriospermum (Ruscaceae) From Northern Namaqualand, Richtersveld, South Africa." Cactus and Succulent Journal 85, no. 1 (2013): 15–18. http://dx.doi.org/10.2985/0007-9367-85.1.15.

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19

Dewar, Genevieve, and Brian A. Stewart. "Preliminary results of excavations at Spitzkloof Rockshelter, Richtersveld, South Africa." Quaternary International 270 (August 2012): 30–39. http://dx.doi.org/10.1016/j.quaint.2011.04.046.

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20

Steiner, Kim E. "A new Diascia species (Scrophulariaceae) from the Richtersveld, South Africa." South African Journal of Botany 58, no. 1 (1992): 36–38. http://dx.doi.org/10.1016/s0254-6299(16)30894-8.

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21

Dreyer, H. C., and G. J. van Jaarsveld. "DIE VELDWERKGESPREK: AARD EN KENMERKE VAN ONDERHOUDE IN DIE RICHTERSVELD." South African Journal of Linguistics 8, sup10 (1990): 1–24. http://dx.doi.org/10.1080/10118063.1990.9723846.

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22

Hendricks, HH, PA Novellie, WJ Bond, and JJ Midgley. "Diet selection of goats in the communally grazed Richtersveld National Park." African Journal of Range & Forage Science 19, no. 1 (2002): 1–11. http://dx.doi.org/10.2989/10220110209485769.

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23

Glavovic, Bruce C. "Resolving People-Park Conflicts through Negotiation: Reflections on the Richtersveld Experience." Journal of Environmental Planning and Management 39, no. 4 (1996): 483–506. http://dx.doi.org/10.1080/09640569612345.

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24

Manning, J. C. "A new species of Trachyandra section Liriothamnus (Asphodelaceae) from the Richtersveld." South African Journal of Botany 56, no. 1 (1990): 1–5. http://dx.doi.org/10.1016/s0254-6299(16)31103-6.

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25

Boonzaier, Emile. "Local responses to conservation in the Richtersveld National Park, South Africa." Biodiversity and Conservation 5, no. 3 (1996): 307–14. http://dx.doi.org/10.1007/bf00051776.

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26

Snijman, D. A. "Three new species and a new synonym in Strumaria (Amaryllidaceae: Amaryllideae) from southern Africa." Bothalia 35, no. 1 (2005): 21–27. http://dx.doi.org/10.4102/abc.v35i1.365.

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Newly described are three species of Strumaria Jacq. subgenus Strumaria. S. prolifera Snijman from the Kourkammaberg in Namaqualand, South Africa, is a rare species closely allied to 5. barbarae Oberm. S. speciosa Snijman from the Sonberg, southern Namibia and S. luteoloba Snijman from Namuskluft, southern Namibia and the Richtersveld in Northern Cape, South Africa, are rare species closely related to S. phonolithica Dinter. S. gigantea D.Mull.-Doblies U.Miill.-Doblies is formally presented as a new synonym of S. phonolithica. A key to the species in Strumaria subgenus Strumaria is given.

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27

Hendricks, HH, JJ Midgley, WJ Bond, and PA Novellie. "Why communal pastoralists do what they do in the Richtersveld National Park." African Journal of Range & Forage Science 21, no. 1 (2004): 29–36. http://dx.doi.org/10.2989/10220110409485831.

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28

Macey, P. H., R. J. Thomas, H. M. Minnaar, et al. "Origin and evolution of the ∼1.9 Ga Richtersveld Magmatic Arc, SW Africa." Precambrian Research 292 (May 2017): 417–51. http://dx.doi.org/10.1016/j.precamres.2017.01.013.

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29

Snijman, D. J. "Notes on the Strumariinae (Amaryllidaceae-Amaryllideae). Six new taxa in Strumaria and Hessea from the central and northwestern Cape, South Africa, and southern Namibia." Bothalia 22, no. 1 (1992): 1–11. http://dx.doi.org/10.4102/abc.v22i1.814.

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Newly described are four species and a subspecies of Strumaria and one species of Hessea. S. aestivalis Snijman from the Langberg and S. perryae Snijman from the Bokkeveld escarpment are rare species closely allied to S. pubescens W.F. Barker. S. discifera Marloth ex Snijman is widespread on the Bokkeveld and Roggeveld escarpments but S. discifera subsp. bulbifera Snijman which comprises several clonal populations, is narrowly restricted to the dolerite ridges near Nieuwoudtville. S. villosa Snijman, a rare species, is localised on quartz hills near Kosies in the Richtersveld. H. speciosa Snij

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30

Snijman, D. A., and G. Williamson. "A taxonomic re-assessment of Ammocharis herrei and Cybistetes longifolia (Amaryllideae: Amaryllidaceae)." Bothalia 24, no. 2 (1994): 127–32. http://dx.doi.org/10.4102/abc.v24i2.762.

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The infructescence of the poorly known Ammocharis herrei F.M. Leight. is similar to that which is diagnostic for Cybistetes longifolia (L.) Milne-Redh. Schweick. In the absence of distinct morphological differences A. herrei is placed into synonymy under C. longifolia. Plants of the amplified C. longifolia have fewer, large seeds in Namaqualand and the Richtersveld and smaller, more numerous seeds in the Western Cape. This pattern is postulated to reflect divergent strategies of resource allocation in different habitats. It is suggested that the infructescence of C. longifolia. a highly derive

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31

Hendricks, HH, B. Clark, WJ Bond, JJ Midgley, and PA Novellie. "Movement response patterns of livestock to rainfall variability in the Richtersveld National Park." African Journal of Range & Forage Science 22, no. 2 (2005): 117–25. http://dx.doi.org/10.2989/10220110509485869.

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32

Desmet, Philip G., Tom L. K. F. Jacobs, and Terry C. Smale. "Conophytum subterraneum, a distinctive new species from the north-eastern Richtersveld, South Africa." Bradleya 19, no. 19 (2001): 15–18. http://dx.doi.org/10.25223/brad.n19.2001.a4.

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33

Berzborn, S. "The household economy of pastoralists and wage-labourers in the Richtersveld, South Africa." Journal of Arid Environments 70, no. 4 (2007): 672–85. http://dx.doi.org/10.1016/j.jaridenv.2006.09.011.

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34

Boonzaier, Emile André, Jan Blommaert, and Karel Arnaut. "Negotiating apartheid and its legacy. Three decades as a citizen anthropologist of the Richtersveld." Afrika Focus 23, no. 2 (2010): 67–68. http://dx.doi.org/10.1163/2031356x-02302009.

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35

DREYER, LÉANNE L., FRANCOIS ROETS, and KENNETH C. OBERLANDER. "Two new Oxalis (Oxalidaceae) species from the Richtersveld National Park, South Africa." Phytotaxa 89, no. 2 (2013): 53. http://dx.doi.org/10.11646/phytotaxa.89.2.2.

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Two new Oxalis species from the Richtersveld National Park (South Africa) are described and typified. Both species show strong morphological resemblance to members of the South African Oxalis section Cernuae. Oxalis nivea sp. nov. closely resembles the well-known weed O. pes-caprae, but it bears white flowers, and has a very restricted distribution range north of the northernmost known locality of O. pes-caprae. Oxalis rosettifolia sp. nov. is distinguished from all other species by a combination of a flat basal rosette of leaves, terete petioles, flask-shaped floral tubes and at least some en

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36

Steiner, K. E. "Two new species of Nemesia (Scrophulariaceae) from southern Africa." Bothalia 36, no. 1 (2006): 39–44. http://dx.doi.org/10.4102/abc.v36i1.330.

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Two new annual species of Nemesia Vent, are described from southern Africa. N. williamsonii is characterized by bright orange flowers with an inflated yellow palate. It differs from the related N. maxii Hiern by having a spur that projects backwards, not downwards, and bracts that are lanceolate with a truncate base, not triangular or cordate. It is unusual for the genus in having dimorphic seeds. N. williamsonii occurs almost exclusively in the Richtersveld. but has been collected in a few localities across the Orange River in southern Namibia. N. hemiptera is a delicate, wiry-stemmed annual

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37

Martha, Konje, Muoria Paul, Wabuyele Emily, and Vetter Susanne. "Spatial-temporal variation of biomass production by shrubs in the succulent karoo, South Africa | JBES 2021." Journal of biodiversity and Environmental Sciences | JBES 18, no. 4 (2021): 82–92. https://doi.org/10.5281/zenodo.6942888.

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Forage production in arid and semi-arid rangelands is not uniform but varies with seasons and in various landscapes. The aim of this study was to investigate the spatial and temporal variation in forage production in RNP. Plants sampling was carried out in 225 plots distributed in each of the five vegetation types. In each vegetation strata, sampling points was based on proximity to an occupied stock post, a rain gauge, a foothill and flat plains. A total of were measured in the 5 study sites. Line Intercept Method in combination with harvest method were used in ground measurement of biomass p

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38

Manning, J. C., and P. Goldblatt. "A revision of Tecophilaeaceae subfam. Tecophilaeoideae in Africa." Bothalia 42, no. 1 (2012): 21–41. http://dx.doi.org/10.4102/abc.v42i1.6.

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Family Tecophilaeaceae subfam. Tecophilaeoideae is revised for the Flora of southern Africa region, with the inclusion of the tropical Walleria mackenzii J.Kirk for completeness. The genera Cyanella Royen ex L. (9 spp.), Eremiolirion J.C.Manning F.Forest (1 sp.) and Walleria J.Kirk (3 spp.) are treated, with keys to the genera, species and subspecies; and full descriptions and distribution maps. A formal infrageneric classification is proposed for Cyanella, in which sect. Trigella (Salisb.) Pax K.Hoffm. is revived for the species with a 3 + 3 arrangement of stamens. The new species, C. marloth

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39

Williamson, Graham. "The ecological status of Aloe pillansii (Aloaceae) in the Richtersveld with particular reference to Cornellskop." Bradleya 16, no. 16 (1998): 1–8. http://dx.doi.org/10.25223/brad.n16.1998.a1.

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40

Williamson, G., and H. Baijnath. "Three new species of Bulbine Wolf (Asphodelaceae) from the Richtersveld and the southern Namib Desert." South African Journal of Botany 61, no. 6 (1995): 312–18. http://dx.doi.org/10.1016/s0254-6299(15)30552-4.

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41

Nicolau, Gary K., and Shelley Edwards. "Diversity and Endemism of Southern African Gekkonids Linked with the Escarpment Has Implications for Conservation Priorities." Diversity 15, no. 2 (2023): 306. http://dx.doi.org/10.3390/d15020306.

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South Africa is recognised for its high reptile diversity and endemism, specifically among lizards. Phylogenetic diversity, endemism, and richness can have clear implications or raise important questions in a range of fields, and most urgently in conservation. Among squamate reptiles, these indices are very commonly associated with high temperatures and topographic heterogeneity. Indeed, mountainous biogeography has been a critical driver in the radiation of the family Gekkonidae within the subregion. Here, we assess the species richness, diversity, and endemism of Gekkonidae species inhabitin

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42

Griffin, Kelly, and Guillermo Rivera. "Our In-between Conventions CSSA Travel Tour Exploring South Africa from Cape Town to the Richtersveld." Cactus and Succulent Journal 91, no. 4 (2019): 258. http://dx.doi.org/10.2985/015.091.0403.

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43

Young, Andrew J., and Chris Rodgerson. "A new pubescent variety of Conophytum from the southern Richtersveld: Conophytum flavum subsp. novicium var. kosiesense." Bradleya 35, no. 35 (2017): 159–65. http://dx.doi.org/10.25223/brad.n35.2017.a15.

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44

von Willert, D. J., E. Brinckmann, B. Scheitler, and B. M. Eller. "Availability of water controls Crassulacean acid metabolism in succulents of the Richtersveld (Namib desert, South Africa)." Planta 164, no. 1 (1985): 44–55. http://dx.doi.org/10.1007/bf00391024.

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45

Duncan, John, Timm Hoffman, Rick Rohde, Elsabè Powell, and Howard Hendricks. "Long-term population changes in the Giant Quiver Tree, Aloe pillansii in the Richtersveld, South Africa." Plant Ecology 185, no. 1 (2005): 73–84. http://dx.doi.org/10.1007/s11258-005-9085-0.

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46

BESTER, STOFFEL P., and HESTER M. STEYN. "Nemesia arenifera (Scrophulariaceae), a new species from the Sandveld, Northern Cape Province, South Africa, and the ectotypification of N. viscosa." Phytotaxa 126, no. 1 (2013): 49. http://dx.doi.org/10.11646/phytotaxa.126.1.6.

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Nemesia arenifera is described as a new species that has been overlooked since 1904. The name Nemesia viscosa was misapplied to specimens from the Namaqualand coast that was considered a coastal form of N. viscosa. Nemesia arenifera is a common and widespread plant on sandy soils in the coastal zone of Namaqualand, Northern Cape, while N. viscosa is only known from the original two gatherings made from one location in the Richtersveld, Northern Cape. The new species differs from N. viscosa and N. rupicola in habit, leaf and fruit shape, and by the orientation of the spur, which is similar to t

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47

Steyn, Hester Maria, and Abraham E. Van Wyk. "Taxonomic notes on the Acanthopsis disperma-hoffmannseggiana complex (Acanthaceae, tribe Acantheae), with an interim key to members of the genus." Phytotaxa 219, no. 1 (2015): 1. http://dx.doi.org/10.11646/phytotaxa.219.1.1.

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Acanthopsis is a taxonomically poorly understood genus confined to arid parts of southern Africa. This contribution is the first detailed assessment of the diversity within the Acanthopsis disperma-hoffmannseggiana complex, the latter of which comprises the bulk of the specimens of the genus represented in herbaria. Species concepts are resolved and the misapplication of names is noted. In addition to the recognition of A. disperma and A. hoffmannseggiana, five new species of Acanthopsis formerly treated under these two names, are described, namely A. tuba and A. ludoviciana (both confined to

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48

Rollinson, Lisa, and Allan Cabrero. "Species discovery in Southern African bee flies (Diptera, Bombyliidae): A new species in the revised genus Enica Macquart, 1834." African Invertebrates 66, no. 1 (2025): 73–115. https://doi.org/10.3897/afrinvertebr.66.129611.

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The Bombyliidae genera Enica Macquart, 1834 and Nomalonia Rondani, 1863, restricted to South Africa, are synonymized. Currently, one species of Enica is known from South Africa, Enica longirostris (Wiedemann, 1819), and six Nomalonia species are newly combined with Enica: Enica clavicornis (Hesse, 1956), comb. nov.; Enica eremophila, (Hesse, 1975), comb. nov.; Enica henicoides (Hesse, 1956), comb. nov.; Enica imitata (Hesse, 1956), comb. nov.; Enica sporanthera (Hesse, 1956), comb. nov.; and Enica syrticola (Hesse, 1956), comb. nov. A new species, Enica adelphesp. nov. from the Richtersveld in

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Jaarsveld, Ernst J. van. "Tylecodon florentii, a new cliff dwelling species from the Kookrivier cliffs, Richtersveld (Northern Cape Province), South Africa." Bradleya 34, no. 34 (2016): 237–40. http://dx.doi.org/10.25223/brad.n34.2016.a12.

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NEWTON, A. R., and T. P. BOYLE. "Discriminating rock and surface types with multispectral satellite data in the Richtersveld, NW Cape Province, South Africa." International Journal of Remote Sensing 14, no. 5 (1993): 943–59. http://dx.doi.org/10.1080/01431169308904388.

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