Taxonomy
Synonyms
Baloghia oligostemon Guillaumin • Austrobuxus oligostemon (Guillaumin) Airy ShawRed List Status -
Least Concern (LC) , assessed in 29/02/2016
Scagea oligostemon is an endemic shrub restricted to the south of Grande Terre in New Caledonia. This species is confined to the area of Plaine des Lacs. It is found in shrubland and river banks on an ultramafic substrate at an altitudinal range 150-250 m asl. This species, widely distributed in the Plaine des Lacs, does not seem directly threatened. Despite a small extent of occurrence (EOO) estimated to 243 km², Scagea oligostemon is assessed as Least Concern (LC).
Geographical area
Scagea oligostemon is an endemic shrub restricted to the south of Grande Terre in New Caledonia. This species is confined to the area of Plaine des Lacs.
Population
Population size is unknown.
Habitat
It is found in shrubland and river banks on an ultramafic substrate at an altitudinal range 0-250 m asl.
Threats
This species, widely distributed in the Plaine des Lacs, does not seem directly threatened. However, the mining industry development in the area (especially in creek Pernod) bears a very serious potential threat. Bush fires contribute as well to the habitat quality degradation.
Conservation
This species is not legally protected. It is found in two protected areas : réserve naturelle des chutes de la Madeleine, réserve naturelle du barrage de Yaté.
Bibliography
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
L'Huillier L.; Jaffré T. and Wulff A. 2010. Mines et Environnement en Nouvelle-Calédonie : les milieux sur substrats ultramafiques et leur restauration.
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.
Wulff AS, Hollingsworth PM, Ahrends A, Jaffré T, Veillon J-M, L’Huillier L, et al. 2013. Conservation Priorities in a Biodiversity Hotspot: Analysis of Narrow Endemic Plant Species in New Caledonia.
Experts
Assessor(s): Tanguy, V., Veillon, J., Amice, R., Cazé, H., Chambrey, C., Dubreuil, M., Fleurot, D., Garnier, D., Lagrange, A., Lannuzel, G., Leborgne, T., Letocart, D., Letocart, I., McCoy, S., Villegente, J.
Reviewer(s): Maura, J.
Contributor(s): Wulff, A.
Facilitator(s): Tanguy, V.