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Scientific Name | Arctotis debensis R.J.Mckenzie |
Higher Classification | Dicotyledons |
Family | ASTERACEAE |
National Status |
Status and Criteria | Vulnerable A2c; B1ab(iii)+2ab(iii) |
Assessment Date | 2008/09/22 |
Assessor(s) | L. von Staden |
Justification | EOO 186 km², eight known locations. The small range of this species falls entirely within a densely populated area. A 30% decline in the population of this locally common species is estimated based on a 32% decline of natural vegetation within the known range in the last 10 years. Habitat loss is ongoing due to expanding human settlements, crop cultivation and severe overgrazing. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape |
Range | King William's Town to Pririe Forest. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Bhisho Thornveld |
Description | Grassland, the species occurs only on the mound-like edges of seasonally inundated hollows or 'kommetjies' that are 0.9-1.2 m deep and 1-9 m in diameter. |
Threats |
| The range of Arctotis debensis falls entirely within a densely populated area of the Eastern Cape. According to national landcover data, the EOO of this species was already 66% transformed by 1996, mainly due to the expansion of human settlements, crop cultivation and severe overgrazing. Habitat loss is ongoing, and a further 32% of the remaining area of natural vegetation within the range of this species has been transformed in the last 10 years (estimate based on recent satellite images). As this species is reported to be locally common within the range (McKenzie et al. 2006), it is assumed that the relationship between habitat loss and population decline is linear, and at least a 30% population reduction is estimated based on habitat loss. |
Population |
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Arctotis debensis R.J.Mckenzie | VU A2c; B1ab(iii)+2ab(iii) | Raimondo et al. (2009) | |
Bibliography |
McKenzie, R.J., Mitchell, S.D. and Barker, N.P. 2006. A new species of Arctotis (Compositae, Arctotideae) from kommetjie grassland in Eastern Cape Province, South Africa. Botanical Journal of the Linnean Society 151(4):581-588.
Raimondo, D., von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. and Manyama, P.A. 2009. Red List of South African Plants. Strelitzia 25. South African National Biodiversity Institute, Pretoria.
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Citation |
| von Staden, L. 2008. Arctotis debensis R.J.Mckenzie. National Assessment: Red List of South African Plants version . Accessed on 2025/06/03 |
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