Taxonomy
Synonyms
Casuarina leucodon J.Poiss.Red List Status -
Least Concern (LC) , assessed in 22/03/2023
Gymnostoma leucodon is an endemic big dense shrub from New Caledonia, where it is distributed in the southern part of Grande Terre, from the far south to the Thio-Tontouta area. This species occurs in riverbed areas or riverbanks on ultramafic substrate up to 250 m asl. Some subpopulations may be impacted by habitat degradation by bushfires but globally this species does not seem to be threatened. Its extent of occurrence (EOO) and area of occupancy (AOO) are estimated at 7,474 and 104 km², respectively. Therefore, Gymnostoma leucodon is listed as Least Concern (LC).
Geographical area
Gymnostoma leucodon is endemic to New Caledonia where it is distributed in the southern part of Grande Terre, from the far south to the Thio-Tontouta area.
Population
Population size is unknown, but field observations indicate that this species is common.
Habitat
This species occurs in riverbed areas or riverbanks on ultramafic substrate up to 250 m asl.
Threats
Some subpopulations may be impacted by habitat degradation by bushfires but globally this species does not seem to be threatened.
Conservation
Gymnostoma leucodon is not protected by legislation in New Caledonia but it occurs in three protected areas: Cap N'dua, Côte Oubliée, Rivière bleue.
Bibliography
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].
L'Huillier L.; Jaffré T. and Wulff A. 2010. Mines et Environnement en Nouvelle-Calédonie : les milieux sur substrats ultramafiques et leur restauration.
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., Bruy, D., Cazé, H., Eltabet, N., Garnier, D., Fleurot, D., Lannuzel, G., Laudereau, C., Vandrot, H.
Reviewer(s): Meyer, S.
Facilitator(s): Warimavute, G., Fourdrain, A.