Taxonomy
Synonyms
Marsdenia dognyensis GuillauminRed List Status -
Vulnerable (VU) , assessed in 24/10/2019
Leichhardtia dognyensis is an endemic liana from New Caledonia. This species is known from six subpopulations: Ouipoin, Plateau de Dogny, Thoven, Diahoué, Ouaté and Nato. This species occurs in dense humid forests on volcano-sedimentary substrates at an altitude range of 200 and 800 m asl. This species is not directly consummed by Rusa deer (Rusa timorensis) probably due to its toxicity. However there is a high impact of Rusa deer that contribute to the decline of its habitat quality. Its number of location is estimated to be at least 6 and its Area of Occupancy and Extent of Occurrence are 28 and 2,636 km², respectively. Therefore, Leichhardtia dognyensis is listed as Vulnerable (VU) B1ab(iii)+2ab(iii).
Geographical area
Leichhardtia dognyensis is endemic to New Caledonia where it is known from six subpopulations: Ouipoin, Plateau de Dogny, Thoven, Diahoué, Ouaté and Nato.
Population
The population size is not known.
Habitat
Leichhardtia dognyensis occurs in dense humid forest on volcano-sedimentary substrates at an altitude range of 200-800 m asl.
Threats
Leichhardtia dognyensis is not directly consummed by Rusa deer (Rusa timorensis) probably due to its toxicity. However there is a high impact of Rusa deer that contribute to the decline of its habitat quality.
Conservation
Leichhardtia dognyensis is not protected by legislation in New Caledonia and it does not occur in a protected area. This species should be included in Province Sud and Province Nord legislation to allow for better protection of the species. It is recommended to conduct field surveys in the central massif of New Caledonia and therefore gain a better idea of its distribution.
Bibliography
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
LIEDE-SCHUMANN S., MEVE U., GÂTEBLÉ G., BARRIERA G. & FICI S. 2020. Apocynaceae p.p., Phellinaceae, Capparaceae : Flore de la Nouvelle-Calédonie.
Boiteau Pierre avec collaboration de Lucie Allorge 1982. Flore de la Nouvelle Calédonie et dépendances. Volume 10 : Apocynacées.
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., Mandaoué, L., Vandrot, H., Pillon, Y.
Reviewer(s): Veillon, J.
Facilitator(s): Warimavute, G., Gâteblé, G., Meyer, S.