Taxonomy
Synonyms
Pittosporum stenophyllum GuillauminRed List Status -
Near Threatened (NT) , assessed in 23/07/2015
Endemic shrub of New Caledonia, Pittosporum koghiense is only distributed on the south part of Grande Terre. It occurs in shrublands and forest on ultramafic massifs at an altitudinal range 350-1200 m asl. Its area of occupancy and its extent of occurrence cover 72 and 810 km² respectively. The populations are threatened by bushfire, mining activities and invasive species (e.g., Rusa timorensis). With a projected continuous decline of the number of mature individuals, it seems appropriate to classify P. koghiense under the category Near Threatened (NT) close to (VU) B1ab(iii,v)+2ab(iii,v).
Geographical area
Endemic shrub of New Caledonia, P. koghiense is only distributed on the southern half of Grande Terre.
Population
Population size is unknown.
Habitat
P. koghiense occurs in shrublands and forest on ultramafic massifs at an altitudinal range 350-1200 m asl.
Threats
Due to its ecology and distribution, P. koghiense could be affected by the majority of inventoried threats in New Caledonia including fire, rusa deer (Rusa timorensis), mining activities, animal husbandry and urbanization.
Conservation
P. koghiense is protected by legislation in Province Sud. This species also occurs in several protected areas : la réserve naturelle du Mont Mou, la réserve naturelle du Pic Ningua, la réserve naturelle de la forêt de Saille, la réserve naturelle de la Haute Dumbéa and also la réserve naturelle de la Vallée de la Thy.
Bibliography
L'Huillier L.; Jaffré T. and Wulff A. 2010. Mines et Environnement en Nouvelle-Calédonie : les milieux sur substrats ultramafiques et leur restauration.
Gomez C.; Mangeas M.; Curt T.; Ibanez T.; Munzinger J.; Dumas P.; Jérémy A.; Despinoy M. and Hély C. 2014. Wildfire risk for main vegetation units in a biodiversity hotspot: modeling approach in New Caledonia, South Pacific. Ecology and Evolution(5) , p.377-390.
Morat, P.; Jaffré, T.; Tronchet, F.; Munzinger, J.; Pillon, Y.; Veillon, J.-M. and Chalopin, M. 2012. Le référentiel taxonomique Florical et les caractéristiques de la flore vasculaire indigène de la Nouvelle-Calédonie [The taxonomic database « FLORICAL » and characteristics of the indigenous flora of New Caledonia]. Adansonia sér 3(34) , p.177-219.
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
Tirel, C. & Veillon J.-M. 2002. Flore de la Nouvelle-Calédonie et dépendances. Volume 24 : Pittosporaceae.
Hély-Alleaume 2012. INC : Incendies et biodiversité des éco-systèmes en Nouvelle-Calédonie.
Experts
Assessor(s): Gemmill, C., Veillon, J., Amice, R., Cazé, H., Dumontet, V., Fleurot, D., Garnier, D., Gâteblé, G., Maggia, L.
Reviewer(s): Tanguy, V.
Facilitator(s): Chanfreau, S.