Ontologia

Zamia melanorrhachis

D.W.Stev.

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

Graphe en cours d’indexation

Calcul du tissu écologique de Zamia melanorrhachis.

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

Liste rouge IUCN

EN · En dangercritères B2ab(iii,v)Décroissante
Évaluation complète
Évaluation
2022 · v3.1
Altitude
0300 m
Profondeur
m
État de la populationExpert

Zamia melanorrhachis is known from a few subpopulations (five subpopulations identified to date). One demographic study has been carried out for the species (years 2007 to 2008 in one locality in the Cordoba province), according to this study and general field surveys in other localities, known subpopulations have moderate numbers of adults (fewer than 1,000 individuals). It is possible that the species has more subpopulations, therefore further research on population distribution and abundance is required.

Menaces identifiées(5 menaces classées CMP-IUCN)

  • 2_1_3
    Agro-industry farming
    Rapid DeclinesMinority (<50%)Ongoing
  • 2_3_2
    Small-holder grazing, ranching or farming
    Rapid DeclinesMajority (50-90%)Ongoing
  • 2_3_3
    Agro-industry grazing, ranching or farming
    Rapid DeclinesMinority (<50%)Ongoing
  • 2_1_2
    Small-holder farming
    Slow, Significant DeclinesMajority (50-90%)Ongoing
  • 5_3_3
    Unintentional effects: (subsistence/small scale) [harvest]
    Slow, Significant DeclinesMajority (50-90%)Ongoing
Description complète des menacesExpert

All subpopulations of the species occur in landscapes threatened with high deforestation rates, caused by agricultural and urban expansion, mostly forest destruction for cattle ranching and crops. The forest patches where subpopulations remain are small (less than 500 hectares) and they are degraded by human activities like logging.

Habitats préférentiels (classification IUCN)

  • 1_5Forest - Subtropical/Tropical Dry
  • 1_6Forest - Subtropical/Tropical Moist Lowland
Mesures de conservation recommandéesExpert
Some conservation actions have been intended for the species, as it is listed on a threatened-species resolution in Colombia and in CITES Appendix II, therefore Colombian environmental authorities are required to prevent and mitigate negative impacts of human activities on this threatened species and to regulate its international commerce. In addition, Colombia launched in 2015 a conservation action plan for Cycads, and in the last few years the “Colombian Cycad Society” has been working to promote population and habitat protection and restoration of small populations for Zamia species in the country, complemented with conservation actions related to research, monitoring, communication and education, among others.

Zamia melanorrhachis
is not present within protected areas. The species has ex situ collections in botanical gardens in Colombia (Medellin and Bucaramanga Gardens). Urgent actions are required to improve population and habitat viability in the long term. The conservation action plan for Colombian Cycads has proposed specific conservation actions for the species, however there is no species conservation strategy properly funded to this date.
Actions de conservation (15)Expert
  • 1_1Site/area protection
  • 1_2Resource & habitat protection
  • 2_1Site/area management
  • 2_3Habitat & natural process restoration
  • 3_2Species recovery
  • 3_4_1Captive breeding/artificial propagation
  • 4_2Training
  • 4_3Awareness & communications
  • 5_1_2National level
  • 5_1_3Sub-national level
  • 5_2Policies and regulations
  • 5_4_2National level
  • 5_4_3Sub-national level
  • 6_1Linked enterprises & livelihood alternatives
  • 6_4Conservation payments
Stress écologiques (5)Expert
  • 1_1Ecosystem conversion
  • 1_1Ecosystem conversion
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
  • 1_2Ecosystem degradation
Usage & commerce (1)Expert
  • 13Pets/display animals, horticulture
    international
Priorités de recherche (9)Expert
  • 1_2Population size, distribution & trends
  • 1_3Life history & ecology
  • 1_4Harvest, use & livelihoods
  • 1_5Threats
  • 1_6Actions
  • 2_1Species Action/Recovery Plan
  • 2_2Area-based Management Plan
  • 3_1Population trends
  • 3_4Habitat trends
Niche IUCN globaleExpert

Royaumes biogéographiques

Neotropical

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

Cycad
Références bibliographiques (4)Expert
  1. IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 21 July 2022).
  2. Lopez-Gallego, C. 2015. <i>Plan de Accion para la Conservacion de las Zamias de Colombia</i>. Ministerio de Ambiente y Desarrollo Sostenible de Colombia, Bogota.
  3. Lopez-Gallago, C. 2008. Demographic variation in cycad populations inhabiting contrasting forest fragments. <i>Biodiversity and Conservation</i> 17: 1213-1225.
  4. Stevenson, D.W. 2004. Cycads of Colombia. <i>The Botanical Review</i> 70(2): 194-234.
Évaluateurs & contributeurs (2)Expert
assessor
Lopez-Gallego, C.
evaluator
Bösenberg, J.D.

Lopez-Gallego, C. 2022. Zamia melanorrhachis. The IUCN Red List of Threatened Species 2022: e.T42136A69838014. 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

Cartographie

Bibliographie