Althénia d'Orient
Althenia orientalis(Tzvelev) García-Mur. & Talavera
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Althenia orientalis.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
DD · Données insuffisantes↘Décroissante- Évaluation
- 2011 · v3.1
- Altitude
- 0 – 960 m
- Profondeur
- – m
État de la populationTexte officiel évaluation IUCNExpert
This species is not very widespread in the Mediterranean region and populations are vulnerable and threatened. The populations are declining.
In Spain, the species occurs in eight sites and is declining. The Portuguese records are from the 19th century and it is suspected that the plant is now extinct there (P. Garcia pers. comm. 2010). In Corsica, it can be found in only one site near Bonifacio (L. Hugot pers. comm. 2010). It has been found in mainland France in Gard and Herault (P. Garcia pers. obs. 2010).
In Italy, it is present in four provinces in the south of the country and also in Sardinia and Sicily.
In Greece, it is known from three localities. Two of these localities are in Naxos island, southwest of Agios Prokopios and a lagoon in the northwestern part of the island not far from the capital, and one locality in southeast Greece near the town of Oropos. In Greece, a part of the lagoon in Naxos was destroyed for the construction of an airport and it has probably disappeared from its locality southwest of Agios Prokopios (I. Bazos pers. comm. 2010).
In Spain, the species occurs in eight sites and is declining. The Portuguese records are from the 19th century and it is suspected that the plant is now extinct there (P. Garcia pers. comm. 2010). In Corsica, it can be found in only one site near Bonifacio (L. Hugot pers. comm. 2010). It has been found in mainland France in Gard and Herault (P. Garcia pers. obs. 2010).
In Italy, it is present in four provinces in the south of the country and also in Sardinia and Sicily.
In Greece, it is known from three localities. Two of these localities are in Naxos island, southwest of Agios Prokopios and a lagoon in the northwestern part of the island not far from the capital, and one locality in southeast Greece near the town of Oropos. In Greece, a part of the lagoon in Naxos was destroyed for the construction of an airport and it has probably disappeared from its locality southwest of Agios Prokopios (I. Bazos pers. comm. 2010).
Menaces identifiées(7 menaces classées CMP-IUCN)
1_1Housing & urban areasOngoing1_3Tourism & recreation areasOngoing6_1Recreational activitiesOngoing7_3Other ecosystem modificationsOngoing9_2_3Type Unknown/UnrecordedOngoing9_3_3Herbicides and pesticidesOngoing9_4Garbage & solid wasteOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
The urbanization and the construction of various tourist infrastructures threaten this species in the short-term. Changes in water regime such as modification of flood periods of water bodies, drainage, or changes of brackish (or saline) water to freshwater are impacting the species populations. Industrial contamination of waters, the depositing of waste, and use of pesticides and herbicides in neighbouring cultivated areas are leading to a degradation of the species habitat.
Habitats préférentiels (classification IUCN)
12_5Marine Intertidal - Salt Marshes (Emergent Grasses)13_4Marine Coastal/Supratidal - Coastal Brackish/Saline Lagoons/Marine Lakes5_16Wetlands (inland) - Permanent Saline, Brackish or Alkaline Marshes/Pools5_17Wetlands (inland) - Seasonal/Intermittent Saline, Brackish or Alkaline Marshes/Pools
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
Althenia orientalis is classified as Endangered A4; B2b(i,ii,iii,iv)c(i,ii,iii) on the Spanish Red List (Moreno 2008). In Greece, it is listed under the name A. filiformis as Endangered B2ab(ii,iii) due to the small number of localities, degradation of the habitat and reduction of the size of the habitats (Sarika and Yannitsaros 2009). The species is legally protected in France. It is classed as Data Deficient in Croatia (Nikolić and Topić 2005).
In order to determine the exact range of this species, fieldwork is necessary especially in those areas where it is suspected that records of A. filiformis are in fact A. orientalis. Monitoring of the populations is recommended as they are decreasing and face a wide range of threats. For practical reasons, and due to similar habitat requirements and threats, conservation efforts in the Mediterranean should encompass both Althenia species.
In order to determine the exact range of this species, fieldwork is necessary especially in those areas where it is suspected that records of A. filiformis are in fact A. orientalis. Monitoring of the populations is recommended as they are decreasing and face a wide range of threats. For practical reasons, and due to similar habitat requirements and threats, conservation efforts in the Mediterranean should encompass both Althenia species.
Stress écologiques (11)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_2Species disturbance
Priorités de recherche (2)Research Needed Classification — IUCNExpert
1_2Population size, distribution & trends3_1Population trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Royaumes biogéographiques
Palearctic
Systèmes (terrestre/eau douce/marin)
Freshwater (=Inland waters)Marine
Formes de croissance
Hydrophyte
Références bibliographiques (17)Sources scientifiques de l'évaluation IUCNExpert
- Dobignard, A. and Chatelain, C. 2011. <i>Index synonymique et bibliographique de la flore de l'Afrique du Nord</i>. Éditions des Conservatoire et Jardin botaniques de la Ville de Genève, Geneva.
- IUCN. 2011. IUCN Red List of Threatened Species (ver. 2011.1). Available at: <a href="http://www.iucnredlist.org">http://www.iucnredlist.org</a>. (Accessed: 30 June 2017).
- WCSPF. 2010. World Checklist of Selected Plant Families. Available at: <a href="http://www.kew.org/wcsp/">http://www.kew.org/wcsp/</a>.
- Castroviejo, S., Aedo, C., Lainz, M., Morales, R., Muñoz Garmendia, F., Nieto Feliner, G. and Paiva, J. (eds). 2010. <i>Flora Iberica. Volume 17</i>. Real Jardín Botaníco, C.S.I.C. Servicio de Publicaciones, Madrid.
- Sarika, M. and Yannitsaros, A. 2009. <i>Rare Data Book of Rare and Threatened Plants of Greece. Volume 1 (A-D)</i>. Hellenic Botanical Society, Patras.
- Consejo Superior de Investigaciones Cientificas (Real Jardin Botanico) and Fundación Biodiversidad (Ministerio de Medio Ambiente). 2009. Anthos. Sistema de informacion sobre las plantas de España. Madrid Available at: <a href="http://www.anthos.es">http://www.anthos.es</a>.
- Moreno, J.C. (coord.). 2008. <i>Lista Roja 2008 de la Flora Vascular Española</i>. Dirección General de Medio Natural y Política Forestal (Ministerio de Medio Ambiente, y Medio Rural y Marino, y Sociedad Española de Biología de la Conservación de Plantas), Madrid.
- Nikolić, T. and Topić, J. (eds). 2005. <i>Red Book of Vascular Flora of Croatia</i>. Ministry of Culture, State Institute for Nature Protection, Republic of Croatia, Zagreb.
- Scoppola, A. and Spampinato, G. 2005. Atlante delle specie a rischio di estinzione. In: A. Scoppola and C. Blasi (eds), <i>Stato delle conoscenze sulla flora vascolare d'Italia</i>, Palombi Editori, Roma.
- Association Tela Botanica. 2000-2008. Le reseau de la botanique francophone. Montpellier Available at: <a href="http://www.tela-botanica.org/">http://www.tela-botanica.org/</a>.
- Fennane, M. and Ibn Tattou, M. 1998. Catalogue des plantes vasculaires rares, menacées ou endémiques du Maroc. <i>Bocconea</i> 8: 5-343.
- Conti, F., Manzi, A. and Pedrotti, F. 1997. <i>Liste Rosse Regionali delle Piante d'Italia</i>. WWF Italia and Società Botanica Italiana, Camerino, Italy.
- Tutin, T.G., Heywood, V.H., Burges, N.A., Moore, D.M., Valentine, D.H., Walters, S.M. and Webb, D.A. 1980. <i>Alismataceae to Orchidaceae (Monocotyledones), Flora Europaea</i>. Cambridge University Press, Cambridge.
- Quézel, P. and Santa, S. 1962. <i>Nouvelle flore de l'Algérie et des régions désertiques méridionales</i>. CNRS, Paris.
- Cuénod, A.; Pottier-Alapetite, G.; Labbé, A. 1954. <i>Flore analytique et synoptique de la Tunisie (Cryptogames Vasculaires, Gymnospermes et Monocotylédones)</i>. Office de l'expérimentation et de la vulgarisation agricole de Tunisie, Tunis.
- Maire, R. 1952. <i>Flore de l'Afrique du nord</i>. Lechevalier éd., Paris.
- 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
assessor
Foggi, B., García Murillo, P., Grillas, P. & Hugot, L.
contributor
Bazos, I., Bergmeier, E., Flanagan, D., Rhazi, L. & Rhazi, M.
evaluator
Bilz, M. & Lansdown, R.V.
Foggi, B., García Murillo, P., Grillas, P. & Hugot, L. 2011. Althenia orientalis (Europe assessment). The IUCN Red List of Threatened Species 2011: e.T164375A5847002. Accessed on 05 May 2026.
Indicateurs écologiquesTolérance thermique · radar EIVE · triangle CSR
Indicateurs écologiques Ellenberg-type
EIVE 1.0 — Dengler 2023Position de l'espèce sur les 5 dimensions écologiques européennes (M / N / R / L / T), échelle 0-10. La zone estompée représente la niche width (variabilité tolérée).
- Humidité
- xérophile ↔ hygrophile
- Azote
- oligotrophe ↔ nitrophile
- Réaction (pH)
- silicicole ↔ calcicole
- Lumière
- sciaphile ↔ héliophile
- Température
- cryophile ↔ thermophile
9.4
hygrophile strict
6.2
nitrophile
8.4
calcicole strict
8.2
héliophile strict
8.1
thermophile strict
Source : EIVE 1.0 (Dengler et al. 2023). CC-BY 4.0. Échelle harmonisée 0-10 (équivalent inverse-rang sur les systèmes Ellenberg, Landolt, Pignatti, etc.). Niche width = écart-type d'estimation, indicateur de fiabilité (zone estompée).
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
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (1)— redirigent vers cette page
- Althenia filiformis subsp. orientalisTzvelev
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).