Taxonomy
Denhamia fournieri
Common name :
Denhamia calédonien
Synonyms
Maytenus hybanthifolia (Guillaumin) Guillaumin • Maytenus pancheriana (Loes.) Guillaumin
Maytenus sebertiana (Loes.) Loes.
• Maytenus fournieri subsp. fournieri (Pancher & Sebert) Loes.
• Maytenus dognyensis (Guillaumin) Guillaumin
• Maytenus bureaviana (Loes.) Loes.
• Maytenus drakeana (Loes.) Loes.
• Maytenus fournieri subsp. drakeana (Loes.) I.H.Müller
Red List Status -
Least Concern (LC) , assessed in 20/11/2020
Denhamia fournieri is an endemic shrub and tree of New Caledonia widely distributed in Grande Terre as well as in Bélep islands. This species occurs in dense humid forest and dry forest rarely in shrubland on ultramafic and volcano-sedimentary rocks at an altitude range of 5 and 1,100 m asl. This species is very common and does not seem to be threatened although some subpopulations may be impacted by bushfires, mining activities and invasive species. Therefore with an extent of occurrence (EOO) equal to 20,286 km² and an area of occupancy (AOO) of 436 km², Denhamia fournieri is listed as Least Concern (LC).
Geographical area
Denhamia fournieri is endemic to New Caledonia where it is widely distributed in Grande Terre as well as in Bélep islands.
Population
Population size is unknown. However field observations indicate a species that is common.
Habitat
Denhamia fournieri occurs in dense humid forest and dry forest rarely in shrubland on ultramafic and volcano-sedimentary rocks at an altitude range of 5 and 1,100 m asl.
Threats
Denhamia fournieri does not seem to be threatened although some subpopulations may be threatened by bushfires, invasive species (Rusa timorensis) and mining activities at Pinpin, Kouaoua, Tiebaghi, Cap Bocage and Goro.
Conservation
Denhamia fournieri is not protected by legislation in New Caledonia and it does occur in six protected areas: Ouen Toro, Aoupinié, Côte Oubliée, la Dumbéa, Vallée de la Thy, Mont Panié. The experts note a high variability in this group and it can also contain multiple taxa that may deserve species-level recognition. Taxonomic and genetic studies are needed to confirm or refuting these assumptions.
Bibliography
Munzinger J., Morat Ph., Jaffré T., Gâteblé G., Pillon Y., Rouhan G., Bruy, D., Veillon J.-M., & M. Chalopin 2020. FLORICAL: Checklist of the vascular indigenous flora of New Caledonia [continuously updated].
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
Morat, P. 1996. Flore de la Nouvelle-Calédonie et dépendances. Volume 20 : Celastraceae, Loranthaceae, Alseuocmiaceae, Paracryphiaceae, Tiliaceae.
Experts
Assessor(s): Bruy, D., Butin, J., Dumontet, V., Fleurot, D., Héquet, V., Laudereau, C., Mandaoué, L., Vandrot, H.
Reviewer(s): Cazé, H.
Facilitator(s): Meyer, S., Warimavute, G.