Taxonomy
Synonyms
Cunonia ouaiemensis Guillaumin & Virot • Weinmannia ouaiemensis (Guillaumin & Virot) HooglandRed List Status -
Critically Endangered (CR) , assessed in 21/07/2016
Weinmannia ouaimensis is an endemic small shrub restricted to Roches Ouaïème on Grande Terre in New Caledonia. It is found in a shrubland at rather high altitude on volcano-sedimentary substrate. The main threats impacting this species come from bushfires which may directly impact this short vegetation. Its area of occupancy (AOO) and extent of occurrence (EOO) being both estimated to 8 km², Weinmannia ouaimensis is considered Critically Endangered (CR) using criteria B1ab(iii,v)+2ab(iii,v) with an estimation of one location and a decline of habitat quality and number of individuals.
Geographical area
This species is restricted to Roches Ouaïème on Grande Terre in New Caledonia.
Population
This species is known of a single population.
Habitat
It is found in a shrubland at rather high altitude (750-920 m asl) on volcano-sedimentary substrate.
Threats
The main threats impacting this species come from bushfires which may directly impact this short vegetation.
Conservation
Protected species by legislation in province Nord, this species is not present in any protected area. As this species is threatened by bushfires, its stations must be included in the maps of Sécurité Civile. The area of Roches de la Ouaïème hosts numerous narrow-endemic species. This species would benefit from a properly protected and managed area. Information panels are suggested. It is recommended to experiment ex-situ conservation actions (seeds banking, nurseries and ex-situ plantations).
Bibliography
Helen Fortune Hopkins, Yohan Pillon, Ruurd Hoogland 2015. Flore de la Nouvelle-Calédonie : Cunoniaceae.
Endemia.nc 2016. Faune et Flore de Nouvelle-Calédonie.
H. C. F. Hopkins, J. C. Bradford, B. Donovan, Y. Pillon, J. Munzinger, B. Fogliani 2015. Floral biology of the Cunoniaceae in New Caledonia and the role of insects, birds and geckos as potential pollinators.
Morat, P.; Jaffré, T.; Tronchet, F.; Munzinger, J.; Pillon, Y.; Veillon, J.-M. and Chalopin, M. 2012. The taxonomic database « FLORICAL » and characteristics of the indigenous flora of New Caledonia. Adansonia(334) , p.177-219.
Experts
Assessor(s): Pillon, Y., Bruy, D., Butin, J., Fleurot, D., Gâteblé, G., Hequet, V., Letocart, D., Letocart, I., Tanguy, V., Tiavouane, J., Tron, F.
Reviewer(s): Fogliani, B.
Contributor(s): Fortune-Hopkins, H., Couhia, J., Brinkert, M.
Facilitator(s): Tanguy, V., Maura, J.