Zamia melanorrhachis
D.W.Stev.
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
- 2022 · v3.1
- Altitude
- 0 – 300 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
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_3Agro-industry farmingRapid DeclinesMinority (<50%)Ongoing2_3_2Small-holder grazing, ranching or farmingRapid DeclinesMajority (50-90%)Ongoing2_3_3Agro-industry grazing, ranching or farmingRapid DeclinesMinority (<50%)Ongoing2_1_2Small-holder farmingSlow, Significant DeclinesMajority (50-90%)Ongoing5_3_3Unintentional effects: (subsistence/small scale) [harvest]Slow, Significant DeclinesMajority (50-90%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
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 recommandéesStratégies de conservation IUCNExpert
Zamia melanorrhachisis 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)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection1_2Resource & habitat protection2_1Site/area management2_3Habitat & natural process restoration3_2Species recovery3_4_1Captive breeding/artificial propagation4_2Training4_3Awareness & communications5_1_2National level5_1_3Sub-national level5_2Policies and regulations5_4_2National level5_4_3Sub-national level6_1Linked enterprises & livelihood alternatives6_4Conservation payments
Stress écologiques (5)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation
Usage & commerce (1)Use & Trade — IUCNExpert
13Pets/display animals, horticultureinternational
Priorités de recherche (9)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_3Life history & ecology1_4Harvest, use & livelihoods1_5Threats1_6Actions2_1Species Action/Recovery Plan2_2Area-based Management Plan3_1Population trends3_4Habitat trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Systèmes (terrestre/eau douce/marin)
Formes de croissance
Références bibliographiques (4)Sources scientifiques de l'évaluation IUCNExpert
- 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).
- 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.
- Lopez-Gallago, C. 2008. Demographic variation in cycad populations inhabiting contrasting forest fragments. <i>Biodiversity and Conservation</i> 17: 1213-1225.
- Stevenson, D.W. 2004. Cycads of Colombia. <i>The Botanical Review</i> 70(2): 194-234.
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
Lopez-Gallego, C. 2022. Zamia melanorrhachis. The IUCN Red List of Threatened Species 2022: e.T42136A69838014. Accessed on 05 May 2026.
Distribution mondiale
Phénologie
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