Taxonomy

endemique
UICN

Red List Status -

Vulnerable (VU) , assessed in 10/05/2016

Pycnandra atrofusca is an endemic tree confined to areas with ultramafic soils, predominately in the south of Grande Terre, although an isolated population has been recorded in the Boulinda massif. It occurs primarily in humid forest on ultramafic substrate between 185-600 m asl. Recurrent bushfires, past logging & wood harvesting and air-borne pollutants are the main identified threats. Its area of occupancy (AOO) and area of occurrence (EOO) are respectively estimated to 32 km² and 2,832 km². Pycnandra atrofusca is therefore considered Vulnerable (VU) according to criteria B1ab(i,ii,iii,v)+B2ab(i,ii,iii,v) with a continuing decline of all sub-criteria.

Geographical area


Pycnandra atrofusca is an endemic tree confined to areas with ultramafic soils, predominately in the south of Grande Terre, although an isolated population has been recorded in the Boulinda massif.

Population


It is known from six sub-populations: Boulinda, Haute Yaté, Haute riviere Pirogues, Pic du grand Kaori, Foret Nord. It is a naturally uncommon species. Ecological studies of Forêt Nord forest have randomly sampled and measured more than 6000 trees with a DBH of 5 cm and only one individual of P. atrofusca was found in that sample.

Habitat


This species occurs primarily in humid forest on ultramafic substrate between 185- 600 m asl.

Threats


Pycnandra atrofusca may be impacted by uncontrolled bushfires, past logging & wood harvesting (Haute riviere des Pirogues) and air-borne pollutants (Forêt Nord).

Conservation


Unprotected species by legislation, Pycnandra atrofusca is found in two protected areas : Rivière bleue, Foret Nord.

Bibliography


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

Swenson U. and Muzinger J. 2009. Revision of Pycnandra subgenus Pycnandra (Sapotaceae), a genus endemic to New Caledonia. Australian Systematic Botany(22) , p.437-465.

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.

Swenson U. and Muzinger J. 2016. Five new species and a systematic synopsis of Pycnandra (Sapotaceae), the largest endemic genus in New Caledonia. Australian Systematic Botany(29) , p.1-40.

Experts


Assessor(s): Cazé, H., Garnier, D., Goxe, J., Héquet, V., McCoy, S.

Reviewer(s): Gâteblé, G.

Contributor(s): Munzinger, J., Swenson, U.

Facilitator(s): Maura, J., Bernard-Musmann, M.


Geographical distribution