Ontologia

Xerophyta kirkii

(Hemsl.) L.B.Sm. & Ayensu

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

Graphe en cours d’indexation

Calcul du tissu écologique de Xerophyta kirkii.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).

Liste rouge IUCN

LC · Préoccupation mineure?Inconnue
Évaluation complète
Évaluation
2019 · v3.1
Altitude
7701920 m
Profondeur
m
État de la populationExpert

No quantitative population data are available for this species. It was recorded as rare and scattered on Mt Namuli during 2007 surveys (Timberlake 5251, 5276) but was found to be abundant there on the northern side of the plateau in the same year (Harris 417). It was common on the Zomba Plateau in 1946 (Brass 16144) and noted as fairly common on the steep rocky slopes leading up to the Liwonde Forest in 1981 (Chapman et al. 6042). The population trend is unknown but it may well be stable.

Menaces identifiées(1 menace classée CMP-IUCN)

  • 5_2_1
    Intentional use (species is the target)
    UnknownUnknownUnknown
Description complète des menacesExpert
As this species favours steep, rocky slopes with sparse vegetation and thin soil pockets, it is unlikely to be threatened by habitat disturbance. That said, there has been considerable denudation of vegetation on Ndirande Mt at Blantyre and it would be desirable to survey how this has impacted this Xerophyta species. Fire damage through deliberate burning of the surrounding vegetation could potentially be an issue at such sites, but Xerophyta species tend to be protected from the worst impacts of increased fire frequency as they are on open rocky slopes that don't get so regularly burnt and they have some fire tolerance. In fact, in some species, fire can stimulate flowering (J. Burrows pers. comm.). The only other potential threat to this species is harvesting of the branches for use as brushes, as noted on Zomba, but this is unlikely to have a major impact on the population size of this species.

Habitats préférentiels (classification IUCN)

  • 6Rocky areas (eg. inland cliffs, mountain peaks)
Mesures de conservation recommandéesExpert
No specific conservation measures or management plan are in place for this species. Three of its known subpopulations in Malawi are in a protected areas: the Zomba (or Zomba-Malosa) Forest Reserve, Liwonde Forest Reserve and Ndirande Forest Reserve (Protected Planet 2018). However, there is significant human pressure on these reserves and protection for biodiversity is limited.
Stress écologiques (2)Expert
  • 2_1Species mortality
  • 2_2Species disturbance
Priorités de recherche (2)Expert
  • 1_2Population size, distribution & trends
  • 1_5Threats
Niche IUCN globaleExpert

Royaumes biogéographiques

Afrotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

LithophyteShrub - largeShrub - smallTree - small
Références bibliographiques (4)Expert
  1. IUCN. 2019. The IUCN Red List of Threatened Species. Version 2019-3. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 10 December 2019).
  2. Behnke, H.-D., Hummel, E., Hillmer, S., Sauer-Gürth, H., Gonzalez, J. and Wink, M. 2013. A revision of African Velloziaceae based on leaf anatomy characters and rbcL nucleotide sequences. <i>Botanical journal of the Linnean Society</i> 172: 22-94.
  3. Timberlake, J., Dowsett-Lemaire, F., Bayliss, J., Alves, T., Baena, S., Bento, C., Cook, K., Francisco, J., Harris, T., Smith, P. and de Sousa, C. 2009. Mt Namuli, Mozambique: biodiversity and conservation. Royal Botanic Gardens, Kew, London.
  4. Gonçalves, A.E. 2009. Velloziaceae. In: Timberlake, J.R.; Martins, E.S. (ed.), <i>Flora Zambesiaca. Vol. 12(2)</i>, pp. 153-175. Royal Botanic Gardens, Kew, London.
Évaluateurs & contributeurs (3)Expert
assessor
Darbyshire, I. & Rokni, S.
evaluator
Raimondo, D.
institutions
IUCN SSC Southern African Plant Specialist Group & Royal Botanic Gardens, Kew

Darbyshire, I. & Rokni, S. 2019. Xerophyta kirkii. The IUCN Red List of Threatened Species 2019: e.T136536649A136538333. Accessed on 05 May 2026.

Répartition mondiale (heatmap GBIF)Construction en cours

0 obs · 0 cellules
Construction par partitions temporelles GBIF0%

Source : GBIF — observations agrégées par hexagones 0.2° × 0.2° (~22km). Filtre qualité : précision coordonnée < 10 km. Coloration quantile (q50/70/90/99). Fond carte : OpenFreeMap · © OpenStreetMap.

Distribution mondiale

Calcul de la distribution GBIF· ~10–60 s

Phénologie

Calcul du calendrier d'apparition· ~5–30 s

Consulter sur les bases externes

Observations & statuts

Bibliographie

Note nomenclaturale & synonymesExpert

Note nomenclaturale

TAXREF v18 — INPN/MNHN

Synonymes (1)— redirigent vers cette page

  • Vellozia kirkiiHemsl.

Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).