Romulée d'Arnaud
Romulea arnaudiiMoret
Pays · région · aire protégée · écorégion · biome
Pas d'interactions documentées pour cette espèce.
Liste rouge IUCN
CR · En danger critiquecritères B1ab(i,ii,iii)↘Décroissante- Évaluation
- 2018 · v3.1
- Altitude
- 0 – 5 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
Although precise data on the current population trend is not available, there is evidence that some subpopulations have been lost due to competition with the invasive Carpobrotus spp., notably the subpopulation at the Cap de St. Pierre.
Menaces identifiées(5 menaces classées CMP-IUCN)
7_1_3Trend Unknown/UnrecordedUnknownUnknownOngoing6_1Recreational activitiesSlow, Significant DeclinesWhole (>90%)Ongoing8_1_2Named speciesSlow, Significant DeclinesWhole (>90%)Ongoing9_1_1SewageSlow, Significant DeclinesMinority (<50%)Ongoing1_3Tourism & recreation areasVery Rapid DeclinesMinority (<50%)Ongoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
The main threats to this species are competition with the invasive species Carpobrotus and Pittosporum spp., erosion due to recreational use and urbanization of its habitat in the littoral zone, small fires, and pollution from discharge of nutrient-rich wastewater (Demonty 2011).
Habitats préférentiels (classification IUCN)
13_1Marine Coastal/Supratidal - Sea Cliffs and Rocky Offshore Islands★
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
Much of the population falls within the Zone Naturelle d’Interet Ecologique, Faunistique et Floristique Cap de Saint-Tropez (Bellan-Santini et al. 2017). At the regional level, this species is classed as CR B2ab(iii) in the region of Provence-Alpes-Côte d’Azur (Noble et al. 2015).
Regarding ex-situ conservation measures in place for this species, the plant´s seeds are maintained in the seed bank of the Botanical Conservatory National Mediterranean De Porquerolles (Demonty, Dixon and Fort 2014), where there are also six bulbs in cultivation; no vegetative reproduction has been observed (Demonty 2011). Its storage appears to be successful with 100% germination after four years (Demonty 2011).
Following Demonty (2011), the recommended action plan includes raising public awareness, developing controls on public access to areas above the beach by marking paths, developing controls on the release of invasive species, monitoring populations, additional research into the ecology and risk of hybridisation with R. columnae and, potentially, the purchase of important stretches of the littoral for their protection.
Regarding ex-situ conservation measures in place for this species, the plant´s seeds are maintained in the seed bank of the Botanical Conservatory National Mediterranean De Porquerolles (Demonty, Dixon and Fort 2014), where there are also six bulbs in cultivation; no vegetative reproduction has been observed (Demonty 2011). Its storage appears to be successful with 100% germination after four years (Demonty 2011).
Following Demonty (2011), the recommended action plan includes raising public awareness, developing controls on public access to areas above the beach by marking paths, developing controls on the release of invasive species, monitoring populations, additional research into the ecology and risk of hybridisation with R. columnae and, potentially, the purchase of important stretches of the littoral for their protection.
Actions de conservation (5)Conservation Actions Classification Scheme — IUCNExpert
1_1Site/area protection1_2Resource & habitat protection2_2Invasive/problematic species control3_4_1Captive breeding/artificial propagation4_3Awareness & communications
Stress écologiques (10)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_1Species mortality2_1Species mortality2_3_2Competition2_3_2Competition
Priorités de recherche (2)Research Needed Classification — IUCNExpert
1_3Life history & ecology3_1Population trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Palearctic
Systèmes (terrestre/eau douce/marin)
Terrestrial
Formes de croissance
Geophyte
Références bibliographiques (5)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).
- Bellan-Santini, B., Ruitton, S. and Pérez, T. 2017. ZNIEFF 93M000091 - Cap de Saint-Tropez. Available at: <a href="https://inpn.mnhn.fr/zone/znieffMer/93M000091">https://inpn.mnhn.fr/zone/znieffMer/93M000091</a>. Accessed: November 2017.
- Noble, V., Van Es, J., Michaud, H. and Garaud, L. (Coord.). 2015. Liste rouge de la flore vasculaire de Provence-Alpes-Côte d’Azur. Direction régionale de l’environment, de l’aménagement et du lodgement et Région Provence-Alpes-Côte d’Azur, Marseille.
- Demonty, E., Dixon, L. and Fort, N. 2014. Collection de grains: Conservation et germination des plantes patrimoniales de Provence-Alpes-Côte d’Azur. Conservatoire botanique national alpin; Conservatiore botanique national méditerranéen de Porquerolles, Gap and Hyères.
- Demonty, E. 2011. <i>Romulea arnaudii</i> endémique de Saint Tropez: Mesures de gestion pour sa conservation. <i>Odissea Seminum</i> 6: 19-23.
Évaluateurs & contributeurs (4)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Lansdown, R.V.
contributor
Molina, J. & Kivelä, A.
evaluator
Tison, J.-M., Molina, J., Michaud, H., Orsenigo, S., García, N. & Allen, D.J.
facilitators
Barrios, V.
Lansdown, R.V. 2018. Romulea arnaudii. The IUCN Red List of Threatened Species 2018: e.T13163667A18611360. Accessed on 05 May 2026.
Répartition mondiale
Aucune observation géoréférencée avec précision suffisante (<10 km) dans GBIF pour cette espèce.