Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Araucariaceae

Scientific Name: Araucaria nemorosa
Species Authority: de Laub.
Taxonomic Source(s): Farjon, A. 2010. A Handbook of the World's Conifers. Koninklijke Brill, Leiden.

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(i,ii,iii,iv,v)+2ab(i,ii,iii,iv,v) ver 3.1
Year Published: 2010
Date Assessed: 2009-11-05
Assessor(s): Thomas, P.
Reviewer(s): Farjon, A. & Gardner, M.
Contributor(s): Munzinger, J., Lowry, P. & Jaffré, T.
This species is assessed as Critically Endangered due to severe fragmentation, its very small extent of occurrence (< 17 km2) and area of occupancy (measured as 0.64 km2) coupled with a projected continuing decline. The total population is less than 5,000 mature individuals in two locations. More than 90% are found in seven fragments around Port Boisé while the remainder are slightly inland at Forêt Nord where a smelter is being developed. This area is the focus of an ongoing restoration programme. Subpopulations in the immediate vicinity of Port Boisé are primarily threatened by fire. Genetic research indicates high levels of inbreeding as a result of fragmentation.
Previously published Red List assessments:
1998 Critically Endangered (CR)
1998 Endangered (E)

Geographic Range [top]

Range Description: This species is endemic to the Port Boisé area in southern New Caledonia, occurring at  20 to 185 m.
Countries occurrence:
New Caledonia
Estimated area of occupancy (AOO) - km2: 0.64
Continuing decline in area of occupancy (AOO): Yes
Estimated extent of occurrence (EOO) - km2: 17
Continuing decline in extent of occurrence (EOO): Yes
Number of Locations: 2
Continuing decline in number of locations: Yes
Extreme fluctuations in the number of locations: No
Lower elevation limit (metres): 20
Upper elevation limit (metres): 185
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: The total popualtion size is estimated to be less than 5,000 mature individuals. More than 90% are located in seven small fragments in the Port Boisé area. The remainder are in a small fragment known as Forêt Nord, several kilometers inland. Ecological surveys indicate that this species was more widespread but has undergone significant reduction in the recent past. There is evidence of inbreeding throughout the population.
Current Population Trend: Decreasing
Additional data:
Number of mature individuals: 4000-5000 Continuing decline of mature individuals: Yes
Extreme fluctuations: No Population severely fragmented: Yes

Habitat and Ecology [top]

Habitat and Ecology: The main population of this species occurs on a level plateau just inland from Port Boisé at around 20-40 m asl. The trees stand in small groups or wide apart among low (to 10 m) and open to dense evergreen forest or scrub interspersed with nearly black, stony areas (cuirasse) almost devoid of vegetation.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes

Use and Trade [top]

Use and Trade: The species has been harvested for local timber use in the past and that is still continuing in places.

Threats [top]

Major Threat(s): Around Port Boisé it is vulnerable to increasing widlfires, occasional felling and the expansion of human habitation. At Forêt Nord the subpopulation is within a new mining development. Recent research has indicated that all subpopulations are showing signs of inbreeding.

Conservation Actions [top]

Conservation Actions: The subpopulation at Forêt Nord is the subject of an ongoing restoration programme that aims to protect that area and to eventually establish a corridor to the other subpopulations in the Port Boisé area. This work is still at an early stage.

Citation: Thomas, P. 2010. Araucaria nemorosa. The IUCN Red List of Threatened Species 2010: e.T30987A9588621. . Downloaded on 14 October 2015.
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