Species code: Th
Thalassia hemprichii(Ehrenb.) Asch.
Pays · région · aire protégée · écorégion · biome
Chargement du graphe…
Indicateurs du réseau écologique
Comment lire ce graphe
Ce graphe représente les interactions écologiques documentées entre Thalassia hemprichii et d'autres espèces, à partir de la base GloBI (Global Biotic Interactions, agrégation mondiale de la littérature scientifique) — source principale, complétée par d'autres jeux de données d'interactions agrégés par Ontologia. Il faut le comprendre comme une carte du savoir documenté, pas une carte de la réalité écologique exhaustive.
Limites principales
- Incomplet. La majorité des interactions écologiques en milieu naturel n'ont jamais été publiées. Une espèce sans liens visibles n'est pas isolée — elle est probablement mal étudiée.
- Biais publication pharmaco-agronomique. La littérature des interactions est polarisée par les enjeux économiques et sanitaires : parasitism / pathogen sur-pondéré sur les mammifères (recherche zoonoses, vecteurs), herbivory sur-pondéré sur les insectes phytophages (entomologie agronomique). À l'inverse, mutualisms, commensalisms et interactions sol/microbiote sont sous-cités. Conseil de lecture : sur les hubs mammifères ou les insectes ravageurs de culture, lire les arêtes parasitism / herbivory dominantes relativement au contexte de littérature, pas comme une mesure d'intensité écologique brute. Détails §10.1.
- Biaisé vers les espèces étudiées. Quelques espèces (oiseaux communs, abeille mellifère, espèces modèles) concentrent disproportionnellement plus d'interactions documentées. Notre score composite ajoute un malus aux hubs de littérature pour atténuer cette dominance visuelle.
- Interactions documentées globalement. Toutes les espèces affichées sont observées en France métropolitaine (les observations sont filtrées sur le territoire métropolitain), mais les interactions entre elles proviennent de la littérature scientifique mondiale. Une interaction documentée à l'étranger peut ne pas se réaliser à l'identique sur votre territoire. Le filtre « restreindre à ma commune » tient compte de la co-occurrence spatiale locale mais ne garantit pas l'interaction effective.
- Sans dimension temporelle. Les variations saisonnières (migration, floraison, cycle de vie) ne sont pas modélisées.
- Force d'interaction approximative. L'épaisseur des liens reflète le nombre de fois où l'interaction a été rapportée dans la littérature, pas son importance écologique réelle.
Comment nous sélectionnons les espèces affichées
Le graphe affiche au plus 31 nœuds par fiche (1 centre + 15 bulles depth=1 + 15 partenaires depth=2). Le serveur sélectionne intelligemment :
- Bulles famille créées si une cascade taxonomique existe ou si ≥3 espèces directement documentées partagent une même famille — les espèces sont absorbées dans la bulle (pas de doublon visuel)
- Espèces individuelles uniquement quand <3 dans une famille (sans cascade) — relations directes documentées
- Pas d'espèces inférées affichées en doublon — les cascades sont représentées via les bulles famille uniquement
- Partenaires depth=2 sélectionnés via algo priorité : candidat partagé par ≥2 docs de la famille (food web central) → reliant entre bulles → top sum_obs en dernier recours
- Sous-types GloBI traduits en français au survol de la flèche (chasse, parasite, parasitoïde, mycorhize…)
Le toggle Profondeur 1 ↔ 2 client-side cache ou affiche les partenaires depth=2 sans refetch. Filtres règne, type d'interaction, ordres/familles, patrimoniales et commune recalculent côté serveur (slow path live ~1-2 s).
Indicateurs avancés (mode expert) : Modularité Q (Newman 2006, PNAS), communautés (Louvain, Blondel et al. 2008, J. Stat. Mech.), nestedness NODF (Almeida-Neto et al. 2008, Oikos).
Source : GloBI · TAXREF v18 (INPN/MNHN) · BDC-Statuts · Wikidata
18 partenaires écologiques documentés directement dans GloBI.
Partenaires
18
Espèces avec interactions documentées
Types d'interactions
4
Prédation, pollinisation, parasitisme…
Connectance
0.067
Densité des liens dans le sous-graphe affiché
Rang plantae
80 %
Percentile vs ensemble des plantae
Liste rouge IUCN
LC · Préoccupation mineure→Stable- Évaluation
- 2010 · v3.1
- Altitude
- – m
- Profondeur
- 5 – 0 m
État de la populationTexte officiel évaluation IUCNExpert
Thalassia hemprichii is a very common and widespread species. New areas of T. hemprichii distribution have been found. There are local increases and decreases but overall the population appears to be stable.
Coastal populations are more likely to be decreasing due to development.
Coastal populations are more likely to be decreasing due to development.
Menaces identifiées(12 menaces classées CMP-IUCN)
11_3Temperature extremesOngoing11_4Storms & floodingOngoing1_1Housing & urban areasOngoing1_2Commercial & industrial areasOngoing1_3Tourism & recreation areasOngoing5_4_3Unintentional effects: (subsistence/small scale) [harvest]Ongoing5_4_4Unintentional effects: (large scale) [harvest]Ongoing8_2Problematic native species/diseasesOngoing9_1_1SewageOngoing9_2_1Oil spillsOngoing
+ 2 menaces supplémentaires
Description complète des menacesTexte détaillé évaluation IUCNExpert
Overexploitation and influences from activities on land (trawling activities, high hotel density in close proximity to the beach, raking, burying and removing seagrass beach cast material), oil spills and oil pollution, mining, upland clearing, destruction of mangrove forests, dredging, marina developments, eutrophication, siltation, and pollution are all major threats to this species. It is also threatened by unsustainable fishing methods, trawling, illegal fisheries, climate change, sea-level rise and high sediment loads in water.
Destruction of Thalassia hembrichii beds also is caused from cyclones, waves, intense grazing and infestation of fungi and epiphytes, and disease.
Predation by sea urchins is a potential threat.
In Kenyan and Tanzanian shores, overexploitation and influences from activities on land (trawling activities, high hotel density in close proximity to the beach, raking, burying and removing seagrass beach cast material) are of concern. Other localized threats include oil spills, oil pollution, declining water quality due to increasing populations in coastal towns and cities (Green and Short 2003).
In India, the natural causes of destruction are cyclones, waves, intense grazing and infestation of fungi and epiphytes, as well as "die-back" disease. Other threats include anthropogenic activities such as deforestation in the hinterland or mangrove destruction, construction of harbours or jetties, and loading and unloading of construction materials. Anchoring and moving of boats, ships, dredging and discharge of sediments, land filling and untreated sewage disposal also affect this species (Green and Short 2003).
In Eastern Australia, population reduction is caused by increased sediment loads in water, coastal development, dredging and marine developments and damage from boating and shipping activities. Coastal runoff and trawling activities also are of concern (Green and Short 2003).
In Thailand, this species is threatened by a combination of illegal fisheries and fishing practices, and land-based activities, especially mining. Reduced water quality resulting from upland clearing, development along rivers and destruction of mangrove forests are also threats (Green and Short 2003).
In the western Pacific, coastal development, dredging, and marina developments, climate change and associated increases in storm activity, water temperature and/or sea-level rise are of concern (Green and Short 2003).
In Indonesia it is threatened mainly by physical degradation such as mangrove cutting and coral reef damage, and by marine pollution from both land- and marine-based resources. Overexploitation of living marine resources such as fish, molluscs and sea cucumbers is also of concern (Green and Short 2003).
In the Philippines, this species is threatened by eutrophication, siltation, pollution, dredging and unsustainable fishing methods (Green and Short 2003).
In Japan, it is threatened by industrial developments in coastal regions, land reclamation resulting to loss of vegetation, water pollution, disturbance of habitats by fish trawling, and changes in environmental conditions due to human activities (Green and Short 2003).
Destruction of Thalassia hembrichii beds also is caused from cyclones, waves, intense grazing and infestation of fungi and epiphytes, and disease.
Predation by sea urchins is a potential threat.
In Kenyan and Tanzanian shores, overexploitation and influences from activities on land (trawling activities, high hotel density in close proximity to the beach, raking, burying and removing seagrass beach cast material) are of concern. Other localized threats include oil spills, oil pollution, declining water quality due to increasing populations in coastal towns and cities (Green and Short 2003).
In India, the natural causes of destruction are cyclones, waves, intense grazing and infestation of fungi and epiphytes, as well as "die-back" disease. Other threats include anthropogenic activities such as deforestation in the hinterland or mangrove destruction, construction of harbours or jetties, and loading and unloading of construction materials. Anchoring and moving of boats, ships, dredging and discharge of sediments, land filling and untreated sewage disposal also affect this species (Green and Short 2003).
In Eastern Australia, population reduction is caused by increased sediment loads in water, coastal development, dredging and marine developments and damage from boating and shipping activities. Coastal runoff and trawling activities also are of concern (Green and Short 2003).
In Thailand, this species is threatened by a combination of illegal fisheries and fishing practices, and land-based activities, especially mining. Reduced water quality resulting from upland clearing, development along rivers and destruction of mangrove forests are also threats (Green and Short 2003).
In the western Pacific, coastal development, dredging, and marina developments, climate change and associated increases in storm activity, water temperature and/or sea-level rise are of concern (Green and Short 2003).
In Indonesia it is threatened mainly by physical degradation such as mangrove cutting and coral reef damage, and by marine pollution from both land- and marine-based resources. Overexploitation of living marine resources such as fish, molluscs and sea cucumbers is also of concern (Green and Short 2003).
In the Philippines, this species is threatened by eutrophication, siltation, pollution, dredging and unsustainable fishing methods (Green and Short 2003).
In Japan, it is threatened by industrial developments in coastal regions, land reclamation resulting to loss of vegetation, water pollution, disturbance of habitats by fish trawling, and changes in environmental conditions due to human activities (Green and Short 2003).
Habitats préférentiels (classification IUCN)
12_6Marine Intertidal - Tidepools9_10Marine Neritic - Estuaries9_4Marine Neritic - Subtidal Sandy9_5Marine Neritic - Subtidal Sandy-Mud9_6Marine Neritic - Subtidal Muddy9_8_2Back Slope9_8_4Lagoon9_8_5Inter-Reef Soft Substrate
Mesures de conservation recommandéesStratégies de conservation IUCNExpert
This species is included in various conservation and management plans and programs and some MPAs.
It is considered in the most recent management plan of the Mombosa Marine National Park and Reserve. There also has been implementation of integrated coastal zone management initiatives in Tanzania by IUCN, Zanzibar (Menai Bay Conservation Project), Mafia Marine Park (by WWF) and Kinondoni Coastal Area Management Programme (Green and Short 2003).
This species cannot be damaged without a permit in New South Whales and Queensland. The Queensland Fisheries Act allows destruction only when a permit has been assessed and issued. In Australia, it is protected in either Fisheries Act or in National Park or Marine Park Acts (Green and Short 2003).
This species also occurs in the seagrass beds in Haad Chao Mai National Park, largest seagrass beds with the highest species diversity for a single area in Thailand. It is also managed in the 1998 proposed policies of the Office of Environmental Policy and Planning (Green and Short 2003).
In the western Pacific islands, it is recognized in the need for sanctuaries and protected areas. There are NGOs focused on conservation and environmental protection integrated with traditional leadership and government agencies, suggesting that conservation measures and the acceptance of enforcement will continue to improve (Green and Short 2003).
The Indonesian Seagrass Committee (ISC) prepared a draft Seagrass Policy, Strategy and Action Plan to guide the management of this species in Indonesia (Green and Short 2003).
It is considered in the most recent management plan of the Mombosa Marine National Park and Reserve. There also has been implementation of integrated coastal zone management initiatives in Tanzania by IUCN, Zanzibar (Menai Bay Conservation Project), Mafia Marine Park (by WWF) and Kinondoni Coastal Area Management Programme (Green and Short 2003).
This species cannot be damaged without a permit in New South Whales and Queensland. The Queensland Fisheries Act allows destruction only when a permit has been assessed and issued. In Australia, it is protected in either Fisheries Act or in National Park or Marine Park Acts (Green and Short 2003).
This species also occurs in the seagrass beds in Haad Chao Mai National Park, largest seagrass beds with the highest species diversity for a single area in Thailand. It is also managed in the 1998 proposed policies of the Office of Environmental Policy and Planning (Green and Short 2003).
In the western Pacific islands, it is recognized in the need for sanctuaries and protected areas. There are NGOs focused on conservation and environmental protection integrated with traditional leadership and government agencies, suggesting that conservation measures and the acceptance of enforcement will continue to improve (Green and Short 2003).
The Indonesian Seagrass Committee (ISC) prepared a draft Seagrass Policy, Strategy and Action Plan to guide the management of this species in Indonesia (Green and Short 2003).
Stress écologiques (24)Stresses Classification — IUCNExpert
1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation1_2Ecosystem degradation2_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 (3)Use & Trade — IUCNExpert
1Food - humansubsistance7Fuelssubsistance8Fibresubsistance
Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert
Systèmes (terrestre/eau douce/marin)
Marine
Formes de croissance
Graminoid
Zones de pêche FAO
Indian Ocean - westernIndian Ocean - easternPacific - northwestPacific - western central
Références bibliographiques (3)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).
- Olesen, B., Marba, N., Duarte, C.M., Savela, R.S. and Fortes, M.D. 2004. Recolonization dynamics in a mixed seagrass meadow: the role of clonal versus sexual processes. <i>Estuaries</i> 27(5): 770-780.
- Green, E.P. and Short, F.T. 2003. <i>World Atlas of Seagrasses</i>. University of California Press, Berkeley.
Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert
assessor
Short, F.T., Carruthers, T.J.R., Waycott, M., Kendrick, G.A., Fourqurean, J.W., Callabine, A., Kenworthy, W.J. & Dennison, W.C.
evaluator
Livingstone, S., Harwell, H. & Carpenter, K.E.
Short, F.T., Carruthers, T.J.R., Waycott, M., Kendrick, G.A., Fourqurean, J.W., Callabine, A., Kenworthy, W.J. & Dennison, W.C. 2010. Thalassia hemprichii. The IUCN Red List of Threatened Species 2010: e.T173364A7000000. 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 (1)— redirigent vers cette page
- Schizotheca hemprichiiEhrenb.
Sources : Catalogue of Life Cross-References (synonymes) · TAXREF v18 INPN/MNHN (commentaires FR).