Halodule bermudensis
Hartog
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Halodule bermudensis.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
DD · Données insuffisantes↘Décroissante- Évaluation
- 2010 · v3.1
- Altitude
- – m
- Profondeur
- 2 – 0 m
État de la populationTexte officiel évaluation IUCNExpert
There is no specific population information available for Halodule bermudensis, and recent investigations suggest that the morphological type on which the description was based no longer is found in Bermuda (K. Coates pers. comm. 2009). Halodule bermudensis was only ever recorded from two sites.
It may still exist in the southwest corner of Bermuda (S. Manuel and K. Coates unpublished data). The total population covers an area of less than 50 m², and if the grass at that site turns out not to be H. bermudensis (based on morphology), then the last known records of this species may be from 1922 collections (K. Coates pers. comm. 2009).
It may still exist in the southwest corner of Bermuda (S. Manuel and K. Coates unpublished data). The total population covers an area of less than 50 m², and if the grass at that site turns out not to be H. bermudensis (based on morphology), then the last known records of this species may be from 1922 collections (K. Coates pers. comm. 2009).
Menaces identifiées(2 menaces classées CMP-IUCN)
1_2Commercial & industrial areasOngoing4_3Shipping lanesOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Pollution, boating and shoreline development are the threats present in the area (K. Coates pers. comm. 2009). Coastal development for moorings and docks are also potential threats (S. Sarkis pers. comm. 2007).
Habitats préférentiels (classification IUCN)
12_2Marine Intertidal - Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc12_6Marine Intertidal - Tidepools9_4Marine Neritic - Subtidal Sandy9_5Marine Neritic - Subtidal Sandy-Mud9_9Marine Neritic - Seagrass (Submerged)
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
There are no species-specific conservation measures currently in place. A marine park was created in an area very close to the type location of H. bermudensis, however, probably because of the complex taxonomic history of this species, its presence in Walsingham Bay was not taken into account when the park boundaries were finalized and Walsingham Bay is not actually included in the marine park. A seagrass management plan is currently being developed (S. Sarkis pers. comm. 2007, S. Manuel and K. Coates pers. comm. 2009).
More research is needed regarding the taxonomy, distribution, life history and ecology of this species. Populations trends should be monitored.
More research is needed regarding the taxonomy, distribution, life history and ecology of this species. Populations trends should be monitored.
Stress écologiques (4)Stresses Classification — IUCNExpert
1_2Ecosystem degradation1_2Ecosystem degradation2_2Species disturbance2_2Species disturbance
Priorités de recherche (4)Research Needed Classification — IUCNExpert
1_1Taxonomy1_2Population size, distribution & trends1_3Life history & ecology3_1Population trends
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Systèmes (terrestre/eau douce/marin)
Marine
Formes de croissance
Graminoid
Zones de pêche FAO
Atlantic - western central
Références bibliographiques (9)Sources scientifiques de l'évaluation IUCNExpert
- IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: <a href="http://www.iucnredlist.org">http://www.iucnredlist.org</a>. (Accessed: 2 September 2010).
- Murdoch, T.J.T., Glasspool, A.F., Outerbridge, M., Ward, J., Manuel, S., Gray, J., Nash, A., Coates, K.A., Pitt, J., Fourqurean, J.W., Barnes, P.A., Vierros., M., Holzer, K. and Smith, S.R. 2007. Large-scale decline of offshore seagrass meadows in Bermuda. <i>Marine Ecology Progress Series</i>: 123-130.
- Larkum, A.W.D., Orth, R.J. and Duarte, C.M. (eds). 2006. <i>Seagrasses: Biology, Ecology and Conservation</i>. Springer, Dordrecht.
- Waycott, M., Procaccini, G., Les, D.H. and Reusch, T.B.H. 2006. Seagrass evolution, ecology, and conservation: a genetic perspective. In: A.W.D. Larkum, R.J. Orth and C. Duarte (eds), <i>Seagrasses: Biology, Ecology, and Conservation</i>, pp. 25-50. Springer, Dordrecht, the Netherlands.
- Green, E.P. and Short, F.T. 2003. <i>World Atlas of Seagrasses</i>. University of California Press, Berkeley.
- Hemminga, M.A. and Duarte, C.M. 2000. <i>Seagrass Ecology</i>. Cambridge University Press, Cambridge.
- Smith, R.S. 1998. Bermuda. In: B. Kjerfve (ed.), <i>CARICOMP-Caribbean coral reef, seagrass and mangrove sites. No 3</i>, pp. 247-257. UNESCO, Paris.
- den Hartog, C. 1970. The sea-grasses of the world. <i>Verhandelingen der Koninklijke Nederlandse Akademie van Wetenschappen, afd, Natuurkunde, Tweede Reeks</i> 59: 1-275.
- den Hartog, C. 1964. An approach to the taxonomy of the sea-grass genus<i> Halodule</i> Endl. (Potamogetonaceae). <i>Blumea</i> 12(2): 289-312.
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Coates, K., Manuel, S., Sarkis, S., Kenworthy, J., Carruthers, T.J.B., Short, F.T. & van Tussenbroek, B.
evaluator
Livingstone, S., Harwell, H. & Carpenter, K.E.
Coates, K., Manuel, S., Sarkis, S., Kenworthy, J., Carruthers, T.J.B., Short, F.T. & van Tussenbroek, B. 2010. Halodule bermudensis. The IUCN Red List of Threatened Species 2010: e.T173374A7002336. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s