Taxonomy

Grammitis pseudoaustralis E.Fourn.
endemique
UICN

Red List Status -

Least Concern (LC) , assessed in 30/10/2019

Grammitis pseudoaustralis is an endemic epiphytic or saxicolous fern from New Caledonia, where it is quite widely distributed in the southern half of Grande Terre. It occurs mostly in high elevation dense humid forest on ultramafic and volcano-sedimentary substrate above 800 m asl, but has also been observed lower. Although some subpopulations may be or have been impacted by mining activities, this species does not seem to be threatened. Its area of occupancy (AOO) and extent of occurence (EOO) are 100 and 2,641 km², respectively. Therefore, G. pseudoaustralis is listed as Least Concern (LC).

Geographical area


G. pseudoaustralis is endemic to New Caledonia, where it is quite widely distributed in the southern half of Grande Terre, mostly on summits, from Pic du Grand Kaori to Kouaoua.

Population


Popluation size is unknown.

Habitat


This epiphytic or saxicolous fern occurs mostly in high elevation dense humid forest on ultramafic and volcano-sedimentary substrate above 800 m asl, but has also been observed lower, from 170 m asl.

Threats


Although some subpopulations may be or have been impacted by mining activities (Kouaoua, Camp des Sapins), this species does not seem to be threatened.

Conservation


G. pseudoaustralis is not protected by legislation in New Caledonia, but it occurs in numerous protected areas: Montagne des sources, Mont Do, Mont Humboldt, Mont Mou, Pic du grand Kaori, Barrage de Yaté and Massif du Kouakoué natural reserves, as well as Rivière Bleue and Côte Oubliée provincial parks. Prospection could be conducted on Mé Adéo and Mts. Dzumac, where it has not been observed in over a century.

Bibliography


Munzinger J., Morat Ph., Jaffré T., Gâteblé G., Pillon Y., Rouhan G., Bruy, D., Veillon J.-M., & M. Chalopin. 2019. FLORICAL: Checklist of the vascular indigenous flora of New Caledonia..

Brownlie G. 1969. Flore de la Nouvelle-Calédonie et Dépendances, Volume 03 : Pteridophytae.

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

Experts


Assessor(s): Amice, R., Butin, J., Cazé, H., Fleurot, D., Garnier, D., Héquet, V., Perrie, L., Suprin, B., Vandrot, H.

Reviewer(s): Rouhan, G.

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


Geographical distribution