Taxonomy

endemique
UICN

Synonyms

Psychotria rupicola var. brevifolia Baill. ex Guillaumin

Red List Status -

Vulnerable (VU) , assessed in 15/09/2016

Psychotria declieuxioides is an endemic shrub, found in Grande Terre from Poro to Nakéty in the north of New Caledonia. Psychotria declieuxioides occurs in shrubland or forest on ultramafic substrate at an altitudinal range 300- 1,020 m asl. Ongoing mining activities impact several subpopulations. Indeed, extraction projections on the coming 25 years will lead to the decline of populations, especially in Nakéty-Euréka_Ménélick (NMC), Nakéty (SMT), CFTMC (SLN), Kouaoua (SLN). The habitat of Psychotria declieuxioides is moreover degraded by bushfires. Its area of occupancy (AOO) and extent of occurrence (EOO) being respectively estimated to 48 and 356 km², while the number of locations is estimated to be six. Psychotria declieuxioides is therefore assessed as Vulnerable (VU) with criteria B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) with a continuing decline of all concerned sub-criteria.

Geographical area


Psychotria declieuxioides is an endemic shrub, found in Grande Terre from Poro to Nakéty in the North of New Caledonia.

Population


It is known from six sub-populations : Poro, Kouaoua mine SLN, Kouaoua : Mine Nea, Mt Menazi, Kouaoua : Dahi/Boakaine, Nakety : Mine Oblen.

Habitat


It occurs in shrubland or forest on ultramafic substrate at an altitudinal range 300- 1,020 m asl.

Threats


Ongoing mining activities impact several subpopulations. Indeed, extraction projections on the coming 25 years will lead to the decline of populations, especially in Nakéty-Euréka_Ménélick (NMC), Nakéty (SMT), CFTMC (SLN), Kouaoua (SLN). The habitat of Psychotria declieuxioides is moreover degraded by bushfires.

Conservation


Psychotria declieuxioides is not protected by legislation and it does not occur in any protected areas. It is recommended to add this species to provincial protected species list and to realize multiplication tests in order to assist future planting operations.

Bibliography


Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.

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.

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.

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): Lannuzel, G., Tanguy, V.

Facilitator(s): Warimavute, G., Maura, J., Tanguy, V., Ramon, L.


Geographical distribution