Taxonomy
Red List Status -
Vulnerable (VU) , assessed in 23/07/2015Protected species -
in Northern Province
Pittosporum collinum is an endemic shrub of New Caledonia with a distribution stretching from Poya to Mount Kaala. It is found at the forest edges and in shrublands on ultramafic soil at an altitudinal range 10-530 m asl. Its area of occupancy and its area of occurrence are equal to 164 and 1656 km² respectively. Population size is not precisely known but could be more than 10,000 mature individuals. With 6 locations affected by bushfire, invasive animal species such as rusa deer (Rusa timorensis) and with the urban development, a continuous decline of quality of habitat and number of mature individuals is likely. Using criteria B, Pittosporum collinum qualifies as Vulnerable (VU) B1ab(iii,v)+2ab(iii,v).
Geographical area
P. collinum is an endemic shrub of New Caledonia with a distribution stretching from Poya to Mount Kaala.
Population
Population size could be greater than 10,000 individuals.
Habitat
P. collinum is found at forest edges and in shrublands on ultramafic soil at an altitudinal range 10-530 m asl.
Threats
P. collinum is subject to uncontrolled bushfires, invasive animal species such as rusa deer (Rusa timorensis) and wild pigs as well as urbanization for Voh-Koné-Pouembout area. This species does not seem directly impacted by mining activities as it is located in talweg on rocky slopes.
Conservation
P. collinum is protected by legislation in Province Nord but not listed in any protected area.
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.
Tirel, C. & Veillon J.-M. 2002. Flore de la Nouvelle-Calédonie et dépendances. Volume 24 : Pittosporaceae.
Gomez C.; Mangeas M.; Curt T.; Ibanez T.; Munzinger J.; Dumas P.; Jérémy A.; Despinoy M. and Hély C. 2014. Wildfire risk for main vegetation units in a biodiversity hotspot: modeling approach in New Caledonia, South Pacific. Ecology and Evolution(5) , p.377-390.
Hély-Alleaume 2012. INC : Incendies et biodiversité des éco-systèmes en Nouvelle-Calédonie.
Experts
Assessor(s): Gemmill, C., Veillon, J., Amice, R., Cazé, H., Dumontet, V., Fleurot, D., Garnier, D., Gâteblé, G., Maggia, L.
Reviewer(s): Tanguy, V.
Facilitator(s): Chanfreau, S.