Taxonomy

Leichhardtia kaalaensis (Meve, Gâteblé & Liede) Liede, Gâteblé & Meve
endemique
UICN

Synonyms

Marsdenia kaalaensis Meve, Gâteblé & Liede

Red List Status -

Critically Endangered (CR) , assessed in 27/10/2017

Marsdenia kaalaensis is endemic to New Caledonia, only known from Mount Kaala in the north west of Grande Terre. It occurs in shrubland on weathered laterites at around 920 m asl. Its area of occupancy (AOO) and extent of occurrence (EOO) are both estimated to be 4 km², while the species is known from a single location. The main threats include ongoing mining activities on Mount Kaala, as well as bushfires. Therefore, M. kaalaensis is listed as Critically Endangered (CR) under criteria B1ab(i,ii,iii,v)+2ab(i,ii,iii,v).

Geographical area


M. kaalaensis is endemic to New Caledonia where it is only known from Mont Kaala, in north west of Grande Terre.

Population


Population size is unknown but field prospections indicate that M. kaalaensis is not common, and it was not found during recent propsection.

Habitat


M. kaalaensis occurs in shrubland on weathered laterites at around 920 m asl.

Threats


Main threats include uncontrolled bushfires and mining activities (SMGM, SMT and SLN).

Conservation


M. kaalensis is not protected by any legislation in New Caledonia and does not occur in any protected areas. This species would benefit from ex situ and in situ emergency conservation actions. It is recommended to monitor and preserve known populations on part of the mining site, and to inform the local authority responsible for the coordination of the firefighting effort about the presence of the species in the concerned areas. It would also be advised to run multiplication tests in order to assist future planting operations. Finally, prospection in the lower valleys of Mont Kaala is needed to better estimate the size of the population and understand potential threats.

Bibliography


Lannuzel, G.; Gâteblé, G.; Fogliani, B. 2017. Etude des Espèces Rares et Menacées des sites miniers de la SMT.

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.

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

Experts


Assessor(s): Amice, R., Barrière, R., Butin, J., Fleurot, D., Lagrange, A., Lannuzel, G., Letocart, I., Suprin, B.

Reviewer(s): Veillon, J.

Contributor(s): Russ, L.

Facilitator(s): Warimavute, G., Tanguy, V.


Geographical distribution