Taxonomy
Red List Status -
Critically Endangered (CR) , assessed in 28/11/2018
Description
Hymenophyllum paniense is an endemic epiphytic fern on tree's trunk from New Caledonie. This species is only known in the north east of Grande Terre (in the Mont Panié massif). It occurs in high altitude from 1,300 and 1,550 m asl. Known from one locality, its extent of occurrence (EOO) and area of occupancy (AOO) are both 8 km². The main threat is posed by invasive species (feral pigs (Sus scrofa) and rusa deer (Rusa timorensis)), causing habitat degradation. Therefore H. paniense is listed as Critically Endangered (CR) under criteria B1ab (iii)+B2ab(iii).
Geographical area
Hymenophyllum paniense is endemic to New Caledonia where it is only known from one locality in the north east of Grande Terre: Mont Panié.
Population
Population size is unknown.
Habitat
Hymenophyllum paniense is an epiphytic fern on tree's trunk which occurs in dense humid forest from 1,300 to 1,550 m asl.
Threats
The main threats to this species are invasive species causing habitat degradation (Rusa deer, Rusa timorensis and feral pigs, Sus scrofa). Climate change could also constitute a serious threat in the future because of the specie's narrow altitude range.
Conservation
Hymenophyllum paniense is not protected by legislation in New Caledonia but it does occur in one protected area: Mont Panié. Prospection in Mt. Panié is needed to collect more biological material and better estimate its population size and search that species in other northeastern massifs.
Bibliography
Ebihara A.,Iwatsuki K., Ito M., Hennequin S., Dubuisson J.Y. 2007. A global molecular phylogeny of the fern genus Trichomanes (Hymenophyllaceae) with special reference to stem anatomy. Botanical Journal of the Linnean Society,(155(1)) , p.1-27.
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
Ebihara A., Iwatsuki K., Ohsawa T.A., Ito M. 2003. Hymenophyllum paniense (Hymenophyllaceae), A New Species of Filmy Fern from New Caledonia. Systematic Botany,(28(2)) , p.228-235.
Del Rio, A. & al. 2017. Origins of the fern genus Hymenophyllum (Hymenophyllaceae) in New Caledonia: Multiple independent colonizations from surrounding territories and limited in situ diversification. Taxon(66(5)) , p.1041-1064.
Ebihara A., Dubuisson J.-Y., Iwatsuki K., Hennequin S., Ito M. 2006. A taxonomic revision of Hymenophyllaceae. Blumea(51(2)) , p.221-280.
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..
Experts
Assessor(s): Amice, R., Butin, J., Garnier, D., Veillon, J., Fleurot, D., Laudereau, C., Suprin, B., Mandaoué, L.
Reviewer(s): Tanguy, V.
Contributor(s): Rouhan, G., Perrie, L.
Facilitator(s): Meyer, S., Warimavute, G.