Taxonomy
Synonyms
Beccariella sebertii (Pancher) Pierre • Pouteria sebertii (Pancher) BaehniRed List Status -
Near Threatened (NT) , assessed in 29/11/2019
Pleioluma sebertii is an endemic shrub or tree of New Caledonia, where it is restricted to the southern ultramafic massif of Grande Terre. It occurs in open forest or shrubland on ultramafic substrate up to 600 m asl. Some subpopulations may be impacted by habitat degradation by bushfires or mining activities. Its extent of occurrence (EOO) and area of occupancy (AOO) are estimated at 1,196 and 268 km², respectively, and the number of locations is estimated to be more than ten. Therefore, P. sebertii is listed as Near Threatened (NT), close to Vulnerable under criteria B1ab(ii,iii,iv,v)+2ab(ii,iii,iv,v).
Geographical area
P. sebertii is endemic to New Caledonia, where it is restricted to the southern ultramafic massif of Grande Terre, up to Mt. Kouakoué.
Population
Population size is unknown, but field observations indicate that this species is rather common.
Habitat
This tree or shrub grows in open forest or shrubland ('maquis') on ultramafic substrate up to 600 m asl.
Threats
Some subpopulations could be impacted by bushfires and mining activities (Goro).
Conservation
P. sebertii is not protected by legislation in New Caledonia, but occurs in several protected areas: Massif du Kouakoué, Montagne des Sources, Barrage de Yaté, Forêt Cachée, Chutes de la Madeleine and Forêt Nord natural reserves, as well as the Rivière Bleue and Côte Oubliée provincial parks.
Bibliography
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
Aubréville A. 1967. Flore de la Nouvelle Calédonie et dépendances. Volume 01 : Sapotacées.
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].
Swenson U., Nylander J.A.A. & Munzinger J. 2018. Phylogeny, species delimitation and revision of Pleioluma (Sapotaceae) in New Caledonia, a frequently gynodioecious genus. Australian Systematic Botany(31) , p.120-165.
Experts
Assessor(s): Barrault, J., Bruy, D., Butin, J., Cazé, H., Fleurot, D., Garnier, D., Gâteblé, G., Laudereau, C., Mandaoué, L., Munzinger, J., Vandrot, H.
Reviewer(s): Swenson, U.
Facilitator(s): Tanguy, V., Meyer, S., Warimavute, G.