Ontologia

Geissorhiza outeniquensis

Goldblatt

NTLR Monde (IUCN)
Pays · région · aire protégée · écorégion · biome

Pas d'interactions documentées pour cette espèce.

Liste rouge IUCN

NT · Quasi menacéeStable
Évaluation complète
Évaluation
2014 · v3.1
Altitude
m
Profondeur
m
État de la populationExpert
Surveys indicated that this species is common in suitable habitat in the Outeniqua Mountains north of George, with subpopulations numbering more than 1,000 mature individuals. It is also likely to be much more common elsewhere in the Outeniqua Mountains, where it is currently known from only a few, scattered herbarium records. Although alien invasive plants are present within the habitat, the threat is currently still low, and the population is thought to be stable.

Menaces identifiées(1 menace classée CMP-IUCN)

  • 8_1_2
    Named species
    Ongoing
Description complète des menacesExpert
The southern slopes of the Outeniqua Mountains have been extensively planted with timber plantations, and from these plantations, escaped pine seedlings have spread across large areas of the mountains. To the east of Cradock Pass, and on the Engelseberg are dense, unmanaged stands of alien invasive plants, that continue to spread. During field surveys, presence of alien invasive plants have been noted in this species' habitat on the Jonkersberg, Cradock Pass, as well as Montagu Pass. If these are also left unmanaged, they are likely to outcompete native species within a very short time. Alien invasive plants also reduce stream flow in mountain catchment areas, and dense invasions upstream could potentially negatively impact this moisture-dependent species.

Habitats préférentiels (classification IUCN)

  • 3_8Shrubland - Mediterranean-type Shrubby Vegetation
  • 5_1Wetlands (inland) - Permanent Rivers/Streams/Creeks (includes waterfalls)
Mesures de conservation recommandéesExpert
No conservation measures are in place. The majority of the population occurs within formally protected areas, but even within these sites, alien invasive plants continue to spread, and clearing and ongoing management is required. It was listed as 'R' in 1996 (Hilton-Taylor 1996) and 'VU' in 2009 (Raimondo et al. 2009)
Actions de conservation (1)Expert
  • 1_1Site/area protection
Stress écologiques (2)Expert
  • 1_1Ecosystem conversion
  • 1_2Ecosystem degradation
Priorités de recherche (3)Expert
  • 1_5Threats
  • 3_1Population trends
  • 3_4Habitat trends
Niche IUCN globaleExpert

Royaumes biogéographiques

Afrotropical

Systèmes (terrestre/eau douce/marin)

TerrestrialFreshwater (=Inland waters)

Formes de croissance

Geophyte
Références bibliographiques (5)Expert
  1. IUCN. 2014. The IUCN Red List of Threatened Species. Version 2014.3. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 13 November 2014).
  2. Raimondo, D., von Staden, L., Foden, W., Victor, J.E., Helme, N.A., Turner, R.C., Kamundi, D.A. and Manyama, P.A. (eds). 2009. <i>Red List of South African Plants</i>. Strelitzia 25. South African National Biodiversity Institute, Pretoria.
  3. Goldblatt, P. and Manning, J.C. 2000. <i>Cape Plants: A Conspectus of the Cape Flora of South Africa</i>. National Botanical Institute of South Africa and Missouri Botanical Garden, Pretoria.
  4. Hilton-Taylor, C. (ed.). 1996. <i>Red Data List of Southern African Plants</i>. Strelitzia 4. National Botanical Institute, Pretoria.
  5. Goldblatt, P. 1985. Systematics of the southern African genus <i>Geissorhiza</i> (Iridaceae-Ixioideae). <i>Annals of the Missouri Botanical Garden</i> 72(2): 277-447.
Évaluateurs & contributeurs (2)Expert
assessor
Goldblatt, P., Raimondo, D. & Turner, R.C.
evaluator
von Staden, L.

Goldblatt, P., Raimondo, D. & Turner, R.C. 2014. Geissorhiza outeniquensis. The IUCN Red List of Threatened Species 2014: e.T63729454A63729458. Accessed on 05 May 2026.

Répartition mondiale

Aucune observation géoréférencée avec précision suffisante (<10 km) dans GBIF pour cette espèce.

Consulter sur les bases externes

Observations & statuts

Bibliographie