Araucaria biramulata


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Araucaria biramulata
Species Authority: J.Buchholz

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(i,ii,iii,iv,v); C2a(i) ver 3.1
Year Published: 2010
Date Assessed: 2009-11-02
Assessor(s): Thomas, P.
Reviewer(s): Farjon, A. & Gardner, M.
Contributor(s): Munzinger, J., Lowry, P. & Jaffré, T.
This species qualifies for Vulnerable on the basis of its limited extent of occurrence, the severe fragmentation and ongoing decline of its subpopulations due to fire and mining. The number of mature individual is estimated to be less than <10,000 with no subpopulation containing more than 1,000 mature individuals.

Geographic Range [top]

Range Description:Araucaria biramulata is primarily found in the southern part of New Caledonia although two localities are known from isolated ultramafic massifs in the north. Occurs from 190 to 1,150 m.
New Caledonia
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population: The total population size is estimated to be less than 10,000 mature individuals; no single locality or subpopulation contains more than 1,000 trees.
Population Trend: Decreasing

Habitat and Ecology [top]

Habitat and Ecology: Primarily found as a scattered emergent tree in dense humid evergreen forest at low to mid altitudes and in areas with 1,500 to 3,000 mm precipitation. It is restricted to ultrabasic soils.
Systems: Terrestrial

Threats [top]

Major Threat(s): Open cast mining and its associated activities are the principal threats in the northern part of its range (Mt Kaala/ Piton de Pandoup and Kopeto). Southern populations, including those in protected areas are mainly threatened by fires which prevent regeneration and increase fragmentation.

Conservation Actions [top]

Conservation Actions: Well-protected subpopulations exist in Rivière Bleue Provincial Park.

Bibliography [top]

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: (Accessed: 2 September 2010).

Jaffre, T., Bouchet, P. and Veillon, J.-M. 1998. Threatened plants of New Caledonia: Is the system of protected areas adequate? Biodiversity and Conservation 7(1): 36.

Jaffré, T., Munzinger, J. and Lowry, P.P. 2010. Threats to the conifer species found on New Caledonia's ultramafic massifs and proposals for urgently needed measures to improve their protection. Biodiversity and Conservation 19: 1485-1502: DOI 10.1007/s10531-010-9780-6.

Laubenfels, D.J. de. 1972. Flore de la Nouvelle-Calédonie et dépendances. Paris: Muséum National d'Histoire Naturelle.

Manauté, J., Jaffré, T., Veillon, J.-M. and Kranitz, M. 2003. Revue des Araucariaceae de Nouvelle-Calédonie. IRD, Nouméa.

Mill, R.R. and Farjon, A. In prep. A Monograph of Araucaria. Royal Botanic Garden Edinburgh, Edinburgh.

Citation: Thomas, P. 2010. Araucaria biramulata. In: The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 05 September 2015.
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