Taxonomy
Red List Status -
Near Threatened (NT) , assessed in 15/09/2016
Psychotria calorhamnus is an endemic shrub of the northwest part of Grande Terre in New Caledonia, from Belep to Koniambo. It is found in shrubland on ultramafic substrate at an altitudinal range 20-200 m asl. The main impact identified comes from mining activites, bushfires and increasing urbanisation.Its area of occupancy (AOO) and extent of occurrence (EOO) being respectively estimated to 80 and 1,915 km², Psychotria calorhamnus is considered Near Threatened (NT) close to VU B1ab(iii)+2ab(iii) with a decline of habitat quality and a number of locations close to 10.
Geographical area
Psychotria calorhamnus is an endemic shrub of the northwest part of Grande Terre in New Caledonia, from Belep to Koniambo.
Population
It is known from 10-15 subpopulations.
Habitat
Psychotria calorhamnus occurs in shrubland on ultramafic substrate at an altitudinal range 20-200 m asl.
Threats
Some subpopulations may be threatened by mining activites: Poum (SLN), Ouazangou (NMC);bushfires and increasing urbanisation.
Conservation
Psychotria calorhamnus is unprotected by legislation in New Caledonia and it does not occur in any protected area.
Bibliography
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
Barrabé L. 2013. Systématique et Evolution du genre Psychotria (Rubiaceæ) en Nouvelle-Calédonie.
Barrabé L, Maggia L, Pillon Y, Rigault F, Mouly A, Davis AP, Buerki S 2014. New Caledonian lineages of Psychotria (Rubiaceae) reveal different evolutionary histories and the largest documented plant radiation for the archipelago. Molecular Phylogenetics and Evolution(71) , p.15-35.
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.
Experts
Assessor(s): Barrabé, L., Amice, R., Bruy, D., Cazé, H., Dumontet, V., Fleurot, D., Garnier, D., Gâteblé, G., Hequet, V., Maura, J., McCoy, S., Suprin, B., Vandrot, H., Veillon, J.
Reviewer(s): Tanguy, V., Lannuzel, G.
Facilitator(s): Maura, J., Tanguy, V., Warimavute, G., Ramon, L.