|
Scientific Name | Bergeranthus addoensis L.Bolus |
Higher Classification | Dicotyledons |
Family | AIZOACEAE |
National Status |
Status and Criteria | Near Threatened B1ab(iii)+2ab(iii) |
Assessment Date | 2018/10/03 |
Assessor(s) | A.P. Dold, J.E. Victor & L. von Staden |
Justification | Bergeranthus addoensis has a restricted range, with an extent of occurrence (EOO) of 2018 km², and an area of occupancy (AOO) of <2000 km². Habitat at 12 known locations is declining due to urban and industrial expansion of Port Elizabeth and Uitenhage, overgrazing and alien plant invasion. |
Distribution |
Endemism | South African endemic |
Provincial distribution | Eastern Cape |
Range | This species is endemic to the Eastern Cape, where it occurs between Port Elizabeth, Uitenhage, Kirkwood and Darlington Dam. |
Habitat and Ecology |
Major system | Terrestrial |
Major habitats | Sundays Valley Thicket, Motherwell Karroid Thicket, Albany Alluvial Vegetation, Grass Ridge Bontveld |
Description | It is localized to open patches on deep, lime-rich sand and clay loams in mesic and xeric succulent thicket, 10-400 m. |
Threats |
| This species is threatened by urban and industrial expansion of Port Elizabeth and Uitenhage, overgrazing and alien invasive encroachment across the rest of its range. |
Population |
Bergeranthus addoensis is an uncommon species, occurring in isolated subpopulations. A continuing decline is inferred from ongoing habitat loss and degradation.
|
Population trend | Decreasing |
Assessment History |
Taxon assessed |
Status and Criteria |
Citation/Red List version | | Bergeranthus addoensis L.Bolus | VU B1ab(iii) | Raimondo et al. (2009) | | Bergeranthus addoensis L.Bolus | Insufficiently Known | Hilton-Taylor (1996) | |
Bibliography |
Dold, A.P., Hammer, S.A. and Barker, N.P. 2005. Leaves of grass: A taxonomic revision of the genus Bergeranthus Schwantes (Aizoaceae). Haseltonia 11:78-97.
Hilton-Taylor, C. 1996. Red data list of southern African plants. Strelitzia 4. South African National Botanical Institute, Pretoria.
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.
|
Citation |
| Dold, A.P., Victor, J.E. & von Staden, L. 2018. Bergeranthus addoensis L.Bolus. National Assessment: Red List of South African Plants version 2020.1. Accessed on 2023/12/04 |
Comment on this assessment
