Taxonomy

endemique
UICN

Synonyms

Phyllanthus chamaecerasus var. intermedius M.Schmid

Red List Status -

Endangered (EN) , assessed in 20/08/2020

Phyllanthus chamaecerasus var. intermedius is a shrub, endemic of New Caledonia and it has a scattered distribution in the south east of Grande Terre. It is known from 2 subpopulations: Houaïlou/Bâ and Dothio. This subspecies occurs in river banks often in low altitudinal forests and maquis undergrowth (10-100 m asl.) on ultramafic substrates. The main identified threats are linked to habitat damage by bushfires. Its extent of occurrence (EOO) and area of occupancy (AOO) are respectively estimated to be of 32 km² 12 km² while the number of locations is estimated to be 2. Using criterion B and with the estimation of a continuous decline of its habitat quality and number of mature individuals, Phyllanthus chamaecerasus var. intermedius is assessed as En Dangered (EN) B1ab(iii,v)+2ab(iii,v).

Geographical area


Phyllanthus chamaecerasus var. intermedius is endemic to New Caledonia where it has a scattered distribution in the south east of Grande Terre. It is known from 2 subpopulations: Houaïlou/Bâ and Dothio.

Population


Population size is unknown.

Habitat


Phyllanthus chamaecerasus var. intermedius occurs in river banks often in low altitudinal forests and maquis undergrowth (10-100 m asl.) on ultramafic substrates.

Threats


The main identified threats are linked to habitat damage by bushfires.

Conservation


Phyllanthus genus is protected by legislation in Province Nord. None of the subpopulations occur within a protected area. This species should benefit from in situ and ex situ emergency conservation actions. It is recommended to inform the DSCGR (emergency services), responsible for the coordination of the firefighting effort on the presence of the species in the concerned areas. It is moreover suggested to realise field surveys in the south east to collect more biological material and better estimateare estimate its distribution range and population size.

Bibliography


McPherson, G.; Schmid, M. 1991. Flore de la Nouvelle-Calédonie et dépendances. Volume 17 : Euphorbiaceae II Phyllanthaceae.

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.

Experts


Assessor(s): Amice, R., Barrière, R., Butin, J., Cazé, H., Dumontet, V., Fleurot, D., Garnier, D., Gâteblé, G., Héquet, V., Laudereau, C., Vandrot, H., Veillon, J.

Reviewer(s): Lannuzel, G.

Facilitator(s): Warimavute, G., Meyer, S.


Geographical distribution