Araucaria rulei 


Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Araucariaceae

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

Assessment Information [top]

Red List Category & Criteria: Endangered A2ac; B2ab(ii,iii) 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.
Araucaria rulei is assessed as Endangered as it meets the following criteria: Its area of occupancy (AOO) is considerably less than 500 km2. Herbarium records overlaid by a four square kilometre grid indicate an AOO of about 120 km2. The subpopulations are considered to be severely fragmented due to their geographic, ecological and edaphic isolation from each other. A continuing decline in the area of occupancy and the quality of habitat has been observed and is projected to continue. Additionally, it is estimated that there has been a population decline of more than 50% over the last 100 years, most of which has occurred in the last decade. The reduction in the area of occupancy and the population decline are the direct result of open cast mining and associated activities and impacts such as road building, spoil dumping and wildfires. A. rulei is almost totally restricted to nickel rich areas and these have been and continue to be heavily exploited. In some areas (e.g. Tiébaghi), this species has been included in restoration and rehabilitation work but this is still at an early stage
Previously published Red List assessments:
1998 Endangered (EN)
1998 Endangered (E)

Geographic Range [top]

Range Description: Araucaria rulei has a wide but discontinuous distribution in New Caledonia. Most subpopulations are concentrated around Mt Boulinda and Paéoua in the northwest or in the Canala and Poro area on the central northeast coast. Occurs from 400 to 800 m.
Countries occurrence:
New Caledonia
Estimated area of occupancy (AOO) - km2: 112
Continuing decline in area of occupancy (AOO): Yes
Extreme fluctuations in area of occupancy (AOO): No
Estimated extent of occurrence (EOO) - km2: 6669
Continuing decline in extent of occurrence (EOO): Yes
Extreme fluctuations in extent of occurrence (EOO): No
Number of Locations: 10
Continuing decline in number of locations: Yes
Lower elevation limit (metres): 400
Upper elevation limit (metres): 800
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Population size can vary from several thousand trees scattered over several kilometres to just a few localized trees.
Current Population Trend: Decreasing
Additional data:
Continuing decline of mature individuals: Yes
Extreme fluctuations: No Population severely fragmented: Yes
Continuing decline in subpopulations: Yes
All individuals in one subpopulation: No

Habitat and Ecology [top]

Habitat and Ecology: Restricted to serpentine, often nickel bearing soils, in 'maquis-minier' shrubland. Trees are usually scattered and rarely form dense stands.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 50

Threats [top]

Major Threat(s): The species has experienced severe declines because of nickel mining (and associated) activities. In general, it regenerates poorly and grows slowly. None of the subpopulations are protected.

Citation: Thomas, P. 2010. Araucaria rulei. The IUCN Red List of Threatened Species 2010: e.T30988A9589036. . Downloaded on 25 November 2015.
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