Herbe à lamantin
Syringodium filiformeKütz.
Pays · région · aire protégée · écorégion · biome
Graphe en cours d’indexation
Calcul du tissu écologique de Syringodium filiforme.
Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).
Liste rouge IUCN
LC · Préoccupation mineure→Stable- Évaluation
- 2010 · v3.1
- Altitude
- – m
- Profondeur
- 20 – 0 m
État de la populationTexte officiel évaluation IUCNExpert
Syringodium filiforme is abundant and the population is thought to be stable throughout most of its range. Locally, this seagrass can be a major habitat forming species.
According to the Global Seagrass Trajectories Database, (T.J.B. Carruthers pers. comm. 2007) there are 13 published studies that monitored this species over time, and of these, 11 had no change and two showed increased coverage (all areal extent, biomass, or cover). Global average maximum biomass is estimated to be 368 g dw/m² above ground (from six observations) and 451 g dw/m² below ground (from four observations) (Duarte and Chiscano 1999). In Bermuda, out of 55 sites sampled 59% showed presence of this species. Of these, 22% had greater than 320 shoots/m² (Murdoch et al. 2004). There were wide scale decreases in abundance throughout Florida Bay from about 83.3 shoots/m² in 1984 to about 5.6 shoots/m² in 1994 with an 88% reduction in average dry weight density. The reduced abundance at that time was most likely due to increased light attenuation due to die-off of Thalassia testudinum (Hall et al. 1999).
According to the Global Seagrass Trajectories Database, (T.J.B. Carruthers pers. comm. 2007) there are 13 published studies that monitored this species over time, and of these, 11 had no change and two showed increased coverage (all areal extent, biomass, or cover). Global average maximum biomass is estimated to be 368 g dw/m² above ground (from six observations) and 451 g dw/m² below ground (from four observations) (Duarte and Chiscano 1999). In Bermuda, out of 55 sites sampled 59% showed presence of this species. Of these, 22% had greater than 320 shoots/m² (Murdoch et al. 2004). There were wide scale decreases in abundance throughout Florida Bay from about 83.3 shoots/m² in 1984 to about 5.6 shoots/m² in 1994 with an 88% reduction in average dry weight density. The reduced abundance at that time was most likely due to increased light attenuation due to die-off of Thalassia testudinum (Hall et al. 1999).
Menaces identifiées(8 menaces classées CMP-IUCN)
1_1Housing & urban areasOngoing1_2Commercial & industrial areasOngoing1_3Tourism & recreation areasOngoing6_1Recreational activitiesOngoing9_1_3Type Unknown/UnrecordedOngoing9_2_3Type Unknown/UnrecordedOngoing9_3_2Soil erosion, sedimentationOngoing9_3_4Type Unknown/UnrecordedOngoing
Description complète des menacesTexte détaillé évaluation IUCNExpert
Threats affecting Syringodium filiforme are eutrophication and sedimentation. This species does not grow well in low quality water and needs good light.
In Florida, this species is locally affected by sewage pollution from expanded residential and hotel development, and marina and boat usage. It is also incidentally damaged from boat traffic. In the Yucatan Peninsula, this species can be affected locally by trawling, eutrophication, and port development. Coastal developments and pollution from land-based sources, eutrophication (sewage and agricultural fertilizers) are local threats in the Caribbean region.
In Florida, this species is locally affected by sewage pollution from expanded residential and hotel development, and marina and boat usage. It is also incidentally damaged from boat traffic. In the Yucatan Peninsula, this species can be affected locally by trawling, eutrophication, and port development. Coastal developments and pollution from land-based sources, eutrophication (sewage and agricultural fertilizers) are local threats in the Caribbean region.
Habitats préférentiels (classification IUCN)
9_4Marine Neritic - Subtidal Sandy9_5Marine Neritic - Subtidal Sandy-Mud9_8_2Back Slope9_8_4Lagoon9_8_5Inter-Reef Soft Substrate9_9Marine Neritic - Seagrass (Submerged)12_2Marine Intertidal - Sandy Shoreline and/or Beaches, Sand Bars, Spits, Etc9_6Marine Neritic - Subtidal Muddy
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species occurs in a number of marine protected areas throughout its range. In the Caribbean for example, Syringoium filiforme is included in the 24 fully managed marine protected areas. Currently, a seagrass management plan is being developed in Bermuda (S. Sarkis pers. comm. 2007).
Stress écologiques (12)Stresses Classification — IUCNExpert
1_1Ecosystem conversion1_1Ecosystem conversion1_1Ecosystem conversion1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_2Species disturbance
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 centralPacific - eastern central
Références bibliographiques (16)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).
- Larkum, A.W.D., Orth, R.J. and Duarte, C.M. (eds). 2006. <i>Seagrasses: Biology, Ecology and Conservation</i>. Springer, Dordrecht.
- Hale, J.A., Frazer, T.K., Tomasko, D.A. and Hall, M.O. 2004. Changes in the distribution of seagrass species along Florida's central Gulf Coast: Iverson and Bittaker revisited. <i>Estuaries</i> 27(1): 36-43.
- Green, E.P. and Short, F.T. 2003. <i>World Atlas of Seagrasses</i>. University of California Press, Berkeley.
- Durako, M.J. and Hall, M.O. 2000. After the die-off: Seagrass dynamics in a perturbed subtropical lagoon. <i>Biologia Marina Mediterranea</i> 7(2): 365-368.
- Hemminga, M.A. and Duarte, C.M. 2000. <i>Seagrass Ecology</i>. Cambridge University Press, Cambridge.
- Duarte, C.M. and Chiscano, C.L. 1999. Seagrass biomass and production: A reassessment. <i>Aquatic Botany</i> 65: 159-174.
- Hall, M.O., Durako, M.J., Fourqurean, J.W. and Zieman, J.C. 1999. Decadal changes in seagrass distribution and abundance in Florida Bay. <i>Estuaries</i> 22(2B): 445-459.
- UNESCO. 1998. CARICOMP-Caribbean coral reef, seagrass and mangrove sites. Coastal region and small island papers. UNESCO, Paris.
- Kenworthy, W.J and Fonseca, M.S. 1996. Light requirements of seagrasses <i>Halodule wrightii</i> and <i>Syringodium filiforme</i> derived from the relationship between diffuse light attenuation and maximum depth distribution. <i>Estuaries</i> 19(3): 740-750.
- Virnstein, R.W. 1995. Seagrass landscape diversity in the Indian River Lagoon, Florida: the importance of geographic scale and pattern. <i>Bulletin of Marine Science</i> 57: 67-74.
- Fourqurean, J.W., Powell, G.V.N., Kenworthy, W.J. and Zieman, J.C. 1995. The effects of long term manipulation of nutrient supply on competition between the seagrasses <i>Thalassia testudinum</i> and <i>Haludule wrightii</i> in Florida Bay. <i>OIKOS</i> 72: 349-358.
- Iverson, R.L. and Bittaker, H.F. 1986. Seagrass distribution and abundance in eastern Gulf of Mexico coastal waters. <i>Estuarine, Coastal and Shelf Science</i> 22: 577-602.
- Virnstein, R.W., Mikkelsen, P.S., Cairns, K.D. and Capone, M.A. 1983. Seagrass beds versus sand bottoms: the trophic importance of their associated benthic invertebrates. <i>Florida Scientist</i> 46: 363-381.
- Zieman, J.C. 1982. The ecology of the seagrasses of South Florida: a community profile. <i>US Fish and Wildlife Service Biological Services Program</i> FWS/OBS-82/5: 150.
- Buesa, R.J. 1975. Population biomass and metabolic rates of marine angiosperms on the Northwestern Cuban Shelf. <i>Aquatic Botany</i> 1: 11-23.
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Short, F.T., Carruthers, T.J.R., van Tussenbroek, B. & Zieman, J.
evaluator
Livingstone, S., Harwell, H. & Carpenter, K.E.
Short, F.T., Carruthers, T.J.R., van Tussenbroek, B. & Zieman, J. 2010. Syringodium filiforme. The IUCN Red List of Threatened Species 2010: e.T173378A7003203. Accessed on 05 May 2026.
Distribution mondiale
Calcul de la distribution GBIF· ~10–60 s
Phénologie
Calcul du calendrier d'apparition· ~5–30 s
Consulter sur les bases externes
Note nomenclaturale & synonymesDétails taxonomiques + synonymes CoLExpert
Note nomenclaturale
TAXREF v18 — INPN/MNHNSynonymes (3)— redirigent vers cette page
- Cymodocea filiformis(Kütz.) Correll
- Cymodocea manatorumAsch.
- Phucagrostis manatorum(Asch.) Kuntze
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).