Ruschia langebaanensis

Taxonomy
Scientific Name
Ruschia langebaanensis L.Bolus
Higher Classification
Dicotyledons
Family
AIZOACEAE
National Status
Status and Criteria
Vulnerable B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v)
Assessment Date
2016/01/13
Assessor(s)
N.A. Helme & L. von Staden
Justification
EOO 1075 km², 10 remaining locations continue to decline due to ongoing habitat loss and degradation.
Distribution
Endemism
South African endemic
Provincial distribution
Western Cape
Range
Vredenburg Peninsula to Yzerfontein.
Habitat and Ecology
Major system
Terrestrial
Major habitats
Saldanha Granite Strandveld, Saldanha Flats Strandveld, Swartland Granite Renosterveld
Description
Granite outcrops near the coast.
Threats
Most of this species' habitat has been converted to crop fields in the past. Remaining subpopulations are severely threatened by ongoing habitat loss to coastal development. In addition some sites are becoming more and more degraded due to overgrazing and inappropriate fire management.
Population

The population has been fragmented by extensive past habitat loss to crop cultivation, and remains in a few isolated subpopulations. Field surveys indicate that at least two subpopulations are small, consisting of fewer than 100 mature individuals, while other records describe the species as locally common. It is therefore not possible to estimate whether the population is severely fragmented. This species could possibly qualify for a higher threat category if more field surveys were to indicate that most subpopulations are small and isolated.


Population trend
Decreasing
Assessment History
Taxon assessed
Status and Criteria
Citation/Red List version
Ruschia langebaanensis L.BolusThreatened Raimondo et al. (2009)
Bibliography

Goldblatt, P. and Manning, J.C. 2000. Cape Plants: A conspectus of the Cape Flora of South Africa. Strelitzia 9. National Botanical Institute, Cape Town.


Manning, J.C. and Goldblatt, P. 2012. Plants of the Greater Cape Floristic Region 1: The Core Cape Flora. Strelitzia 29. South African National Biodiversity 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
Helme, N.A. & von Staden, L. 2016. Ruschia langebaanensis L.Bolus. National Assessment: Red List of South African Plants version 2017.1. Accessed on 2017/05/28

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Distribution map

© N.A. Helme


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