Ail à Tige Triquètre
Vagaria ollivieriMaire
Pas d'interactions documentées pour cette espèce.
Liste rouge IUCN
VU · Vulnérablecritères B1ab(i,ii,iii,v)+2ab(i,ii,iii,v)↘Décroissante- Évaluation
- 2018 · v3.1
- Altitude
- 200 – 1400 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
The plant is rare, fairly uncommon, local and known from few localities. The number of mature individuals and population density are inferred to be very low, although no precise count has been made due to the lack of quantitative data availability. Population decline appears to be ongoing at multiple sites due to numerous threats (Jahandiez and Maire 1934, Emberger and Maire 1941, Maire 1955, Peltier 1976, 1978, Fennane and Ibn Tattou 1998, Benabid 2002, Taleb and Fennane 2003, Clayton et al. 2006, Fennane and Ibn Tattou 2008, Dobignard and Chatelain 2010, Mathez 2013, Rankou et al. 2013).
Menaces identifiées(13 menaces classées CMP-IUCN)
4_1Roads & railroadsRapid DeclinesMajority (50-90%)Ongoing5_2_1Intentional use (species is the target)Rapid DeclinesWhole (>90%)Ongoing6_1Recreational activitiesRapid DeclinesMajority (50-90%)Ongoing6_3Work & other activitiesRapid DeclinesMajority (50-90%)Ongoing7_1_3Trend Unknown/UnrecordedRapid DeclinesMajority (50-90%)Ongoing9_3_2Soil erosion, sedimentationRapid DeclinesMajority (50-90%)Ongoing11_1Habitat shifting & alterationUnknownMajority (50-90%)Ongoing11_2DroughtsUnknownWhole (>90%)Ongoing1_1Housing & urban areasVery Rapid DeclinesMajority (50-90%)Ongoing1_3Tourism & recreation areasVery Rapid DeclinesWhole (>90%)Ongoing
+ 3 menaces supplémentaires
Description complète des menacesTexte détaillé évaluation IUCNExpert
Population and habitats are locally declining due to numerous anthropogenic threats, especially overgrazing, trampling, habitat fragmentation and deterioration of the surrounding environments due to demographic pressures, random harvesting, irregular fires and deforestation of the neighboring mountains which increases the soil erosion and the disappearance of the species as the disturbances are highly frequent and strong. More generally, threats include direct and indirect impacts of human activities such as leisure activities, tourism (an increasing number of visiting tourists, facilitated by easier access to sites), infrastructure development (building of paths, tracks, and new roads), urbanization, agricultural intensification, water pollution and the decline of wetlands due to long periods of drought and climate change (RBOSM 2008).
Habitats préférentiels (classification IUCN)
1_4Forest - Temperate★3_4Shrubland - Temperate★3_8Shrubland - Mediterranean-type Shrubby Vegetation★4_4Grassland - Temperate★6Rocky areas (eg. inland cliffs, mountain peaks)★5_4Wetlands (inland) - Bogs, Marshes, Swamps, Fens, Peatlands
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
The species is present in the UNESCO-MAB Réserve de Biosphère de l'Arganeraie (IUCN and UNEP-WCMC 2017), however, no conservation measures are in place. The following conservation actions are recommended:
- Site protection from habitat loss and fragmentation, deforestation, random cutting and overgrazing, including protected areas designation to ensure the complete regeneration of the species, its ecosystems, and to restore the quality of wild environments.
- Site management through fencing vulnerable sites to protect the species from collection and trampling, and limiting the extension of agriculture development closer to the species´ known range.
- Species management through initiatives such as sympathetic management of isolated populations and ex-situ conservation initiatives (artificial propagation, re-introduction and seed collections).
- Legal protection of the species and enforcement through collection or digging up bans, its inclusion in the list of protected species of Morocco, and legislation (e.g., to protect and the enhance the environment and carry out studies of impact).
- Promotion and implementation of agro-ecological practices within communities: pastoral and silvo-pastoral improvement (e.g. development of water points for livestock), organization of pastoralists and establishment of a rotation system for pasture to reduce overgrazing, trampling and the pressure on the species and grazing time restriction by exclusions; creation of collective sites and establishment and management of natural sanctuaries though identification and censusing the number of livestock and installation of a traditional pastoral system (not a rotation) named "Agdel" with limiting the number of livestock on the basis of the previous census.
- Education measures to raise public awareness: identify priorities though the protection and improvement of local practices and knowledge of traditional practices, motivation and initiation of the production of biological quality products.
- Additional research to estimate population sizes and to study their dynamics, trends, biology and ecology, as well as the links between ecosystem function and species demography. Monitoring and surveillance of the existing populations and sites. Delimitate the forest conservation status and public spaces with a fast procedure based on negotiation between the forest administration (Haut Commissariat aux Eaux et Forêts), users and rights holders.
- Support socio-economic development and improvement of livelihoods for rural populations: establishment of an environmental educational program (including staff training, institutional strengthening and development of local human resources), promotion of participative approaches with communities and local people for the implementation of the conservation actions, and development of ecotourism with special focus to provide work opportunities for local people.
Actions de conservation (10)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection2_1Site/area management2_3Habitat & natural process restoration3_3_1Reintroduction3_4_1Captive breeding/artificial propagation3_4_2Genome resource bank4_3Awareness & communications5_1_2National level5_4_2National level6_1Linked enterprises & livelihood alternatives
Stress écologiques (52)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_1Species mortality2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance2_2Species disturbance
Usage & commerce (1)Use & Trade — IUCNExpert
2Food - animalsubsistance
Priorités de recherche (5)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends1_6Actions2_1Species Action/Recovery 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 (16)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2018. The IUCN Red List of Threatened Species. Version 2018-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 28 June 2018).
- IUCN and UNEP-WCMC. 2017. The World Database on Protected Areas (WDPA). www.protectedplanet.net. Cambridge, UK Available at: <a href="www.protectedplanet.net">www.protectedplanet.net</a>.
- Mathez, J. 2013. Fascicule, I. I. "État des connaissances botaniquës et ecologiques sur la région d’Ifni.". Available at: <a href="http://www.is.um5a.ac.ma/IMG/pdf/Mathez_BSSNPM_54.pdf">http://www.is.um5a.ac.ma/IMG/pdf/Mathez_BSSNPM_54.pdf</a>. (Accessed: October 2013).
- Rankou, H., Culham, A., Jury, S.L. and Christenhusz, M.J.M. 2013. The endemic flora of Morocco. <i>Phytotaxa</i> 78(1): 1-69.
- Dobignard, D. and Chatelain, C. 2010. <i>Index synonymique de la flore d'Afrique du nord. Volume 1</i>. Publication hors-série 11. Éditions des conservatoire et jardin botaniques, Genève.
- Fennane, M. and Ibn Tattou, M. 2008. <i>Flore vasculaire du Maroc inventaire et chorologie, Vol. 2</i>. Travaux de l’Institut Scientifique, Rabat.
- RBOSM. 2008. Résultat de l'étude sur l'émaboration du plan de gestion de la Réserve de Biosphère des Oasis du Sud Marocain (RBOSM). Le Ministère de l’Agriculture du Développement Rural et de la Pêche Maritime (MADRPM) de Biosphère des Oasis du Sud Marocain, Rabat, Maroc.
- Clayton, W.D., Vorontsova, M.S., Harman, K.T. and Williamson, H. 2006 onwards. Grassbase - the online World Grass Flora. Available at: <a href="www.kew.org/data/grasses-db.html">www.kew.org/data/grasses-db.html</a>.
- Taleb, M.S. and Fennane, M. 2003. Etude des groupements steppiques du Parc National du Haut Atlas oriental et ses bordures (Maroc). <i>Bulletin de l'Institut Scientifique, Rabat</i> 25(Sciences de la Vie): 25-41.
- Benabid, A. 2002. <i>Flore et écosystèmes du Maroc. Évaluation et préservation de la biodiversité</i>. Ibis Press, Paris.
- Fennane, M. and Ibn Tattou, M. 1998. Catalogue des plantes vasculaires rares, menacées ou endémiques du Maroc. <i>Bocconea</i> 8: 5-343.
- Peltier, J.P. 1978. La vegetation du massif du Kerdous (Anti-Atlas occidental). <i>Bulletin de I'lnstitut Scientifique, Rabat</i> 1: 5-32.
- Peltier, J.P. 1976. La vegetation du Haut Souss. <i>Bulletin de I'lnstitut Scientifique, Rabat</i> 1: 119-149.
- Maire, R. 1955. <i>Flore de l'Afrique du nord</i>. Lechevalier éd., Paris.
- Emberger, L. and Maire, R. 1941. <i>Catalogue des Plantes du Maroc</i>. Imprimerie Minerva, Alger.
- Jahandiez, E. and Maire, R. 1934. <i>Catalogue des plantes du Maroc</i>. Minerva, Lechevalier éds., Alger.
Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert
Rankou, H. 2018. Vagaria ollivieri. The IUCN Red List of Threatened Species 2018: e.T13147515A18609594. 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
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (7)— redirigent vers cette page
- Hannonia hesperidum var. legionariorumEmb.
- Hannonia hesperidum var. legionariorumBraun-Blanq. & Maire
- Vagaria gattefosseiMaire
- Vagaria legionariorum(Emb.) Maire
- Vagaria legionariorum var. gattefossei(Maire) Maire
- Vagaria ollivieri var. gattefossei(Maire) Maire & Weiller
- Vagaria ollivieri var. legionariorum(Emb.) Maire & Weiller
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).