Taxonomy

endemique
protegee
UICN

Red List Status -

Endangered (EN) , assessed in 12/10/2015

Protected species -

in Northern Province , in Northern Province

Bocquillonia longipes is a narrow endemic shrub found in the northwestern part of Grande Terre in New Caledonia. This species is known from 4 sub-populations : Kaala, Koniambo, Mé Maoya, Boulinda. It is found in shrubland and forest on ultramafic substrate at an altitudinal range 75-780 m asl. The main threat is presented by ongoing mining activities in Kaala, Koniambo and Mé Maoya. The twenty five year projection for mining operation indicate that a majority of individuals may be affected. Its extent of occurrence (EOO) and area of occupancy (AOO) are respectively estimated to be of 724 km² and 56 km² while the number of locations are estimated to be 5. Bocquillonia longipes is therefore assessed as Endangered (EN) with criteria B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) with a continuing decline of all concerned sub-criteria.

Geographical area


Bocquillonia longipes is a narrow endemic shrub found in the northwestern part of Grande Terre in New Caledonia. This species is known from 4 sub-populations : Kaala, Koniambo, Mé Maoya, Boulinda.

Population


Population size is unknown. However, Bocquillonia longipesis seems quite common in Koniambo forests.

Habitat


Bocquillonia longipes is found in shrubland and forest on ultramafic substrate at an altitudinal range 75-780 m asl.

Threats


The main threat is presented by ongoing mining activities in Kaala, Koniambo and Mé Maoya. The twenty five year projection for mining operation indicate that a majority of individuals may be affected. New Caledonia contains between 20 - 30% of the world’s nickel resources and has experienced intense mining activities since the late 19th century which has generated soil erosion (1.2% of bare ground mapped by SPOT5 in 2007). Based on the distribution of metal-rich soils and site accessibility, these threats are predictable and planned (rise in nickel production from 60,000 to 200,000 tonnes per year between 2013 and 2015). Boulinda sub-population is also under a heightened threat from bushfire. Uncontrolled fires sweep across lowlands of New Caledonia each year, especially during the dry season (an average of 20,000 ha of land is burnt each year).

Conservation


Bocquillonia longipes is protected by legislation in Province Nord (genus) and Province Sud, but does not occur in any protected area. It is noted that KNS has launched prospections since 2015. Prospections in Mé Maoya surroundings would be advisable. This species would benefit from ex-situ and in-situ emergency conservation actions. It is proposed to ensure the follow-up of known sub-populations, to preserve a viable population on delimited perimeters on each mining areas. It would be moreover advised to realize multiplication tests in order to assist future planting operations.

Bibliography


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.

L'Huillier L.; Jaffré T. and Wulff A. 2010. Mines et Environnement en Nouvelle-Calédonie : les milieux sur substrats ultramafiques et leur restauration.

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., Barrière, R., Chambrey, C., Fleurot, D., Lannuzel, G.

Reviewer(s): Vandrot, H.

Contributor(s): Wulff, A.

Facilitator(s): Chanfreau, S., Tanguy, V.


Geographical distribution