Taxonomy

endemique
UICN

Synonyms

Phyllanthus yvettae M.Schmid

Red List Status -

Endangered (EN) , assessed in 25/06/2020

Phyllanthus yvettae is an endemic shrub of 1-3 m high, endemic of New Caledonia. This species has a scattered distribution in the south of Grande Terre and it is known from 3 subpopulations: Koghis, Mt. Do and Ciu. This species occurs in forests on ultramafic substrates at an altitude range of 200 and 700 m asl. The main identified threats are linked to habitat damage by invasive species (Rusa deer, Rusa timorensis). Its extent of occurrence (EOO) and area of occupancy (AOO) are respectively estimated to be of 573 km² and 24 km² while the number of locations is estimated to be 3. Using criterion B and with the estimation of a continuous decline of its habitat quality, Phyllanthus yvettae is assessed as En Dangered (EN) B1ab(iii)+2ab(iii).

Geographical area


Phyllanthus yvettae is endemic to New Caledonia where it has a scattered distribution in the south of Grande Terre. It is known from 3 subpopulations: Koghis, Mt. Do and Ciu.

Population


Population size is not known.

Habitat


Phyllanthus yvettae occurs in forests on ultramafic substrates at an altitude range of 300 and 700 m asl.

Threats


The main identified threats are linked to habitat damage by invasive species (Rusa deer, Rusa timorensis).

Conservation


Phyllanthus genus is protected by legislation in Province Nord. Phyllanthus yvettae does occur in 2 protected areas: Vallée de la Thy et Mont Do. This species should be listed in the Province Sud legislation. It is recommended to inform the Conservatoire d'espaces naturels de Nouvelle-Calédonie (New Caledonia natural spaces conservatory), which coordinates the New caledonian Invasive Species Programme, on the situation of the species in the concerned areas. And It is also recommended to realise field surveys in the near by areas.

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.

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].

Experts


Assessor(s): Amice, R., Bruy, D., Butin, J., Cazé, H., Fleurot, D., Héquet, V., Lannuzel, G., Laudereau, C., Lagrange, A., Veillon, J., Garnier, D., Dumontet, V., Goxe, J., McCoy, S., Gâteblé, G.

Reviewer(s): Warimavute, G.

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


Geographical distribution