Citronella sp.nov. Munzinger 7467 is an endemic species from New Caledonia, This species is known from four subpopulations : Kopeto, Boulinda, Paéoau and Poro. It is found in dense humid forest on ultramafic substrate at an altitudinal range 500-520 m asl. The main threats are on-going mining activities impact some subpopulations. Indeed, extraction projections on the coming 25 years will lead to the decline of populations, especially in Kopeto (SLN). This species is also threatened by bushfires at Boulinda and Poro. Its extent of occurrence (EOO) and area of occupancy (AOO) are respectively estimated to be of 387 and 20 km² while the number of locations is estimated to be four. This species is therefore assessed as Endangered (EN) with criteria B1ab(i,ii,iii,v)+2ab(i,ii,iii,v) with a continuing decline of all concerned sub- criteria.

Geographical area

Citronella sp.nov. Munzinger 7467 is endemic to New Caledonia where it is known from four subpopulations : Kopeto, Boulinda, Paéeou and Poro.

Population

The population size is is not known.

Habitat

Citronella sp.nov. Munzinger 7467 is found in dense humid forest on ultramafic substrate at an altitudinal range 500-519 m asl.

Threats

The main threats are on-going mining activities impact some subpopulations. Indeed, extraction projections on the coming 25 years will lead to the decline of populations, especially in Kopeto (SLN). This species is also threatened by bushfires at Boulinda and Poro.

Conservation

Citronella sp.nov. Munzinger 7467 is not protected by legislation in New Caledonia and it does not occur in any protected area. It is recommended to inform the DSCGR (emergency services) on the presence of the species in the concerned areas. Searches in the nearby areas of Kouaoua and Poro/Kopéto/Boulinda are needed in order to better estimate its population and threats. This species would benefit from ex-situ and in-situ emergency conservation actions. It is proposed to monitor the populations and to preserve a viable population within delimited perimeters on the mining area.

Bibliography

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

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].

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., Fleurot, D., Garnier, D., Héquet, V., Lagrange, A., Lannuzel, G., Laudereau, C., McCoy, S., Vandrot, H.

Reviewer(s): Pillon, Y.

Facilitator(s): Fourdrain, A., Warimavute, G.