Dacrydium nausoriense 


Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Podocarpaceae

Scientific Name: Dacrydium nausoriense
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: Endangered B2ab(iii,v) ver 3.1
Year Published: 2013
Date Assessed: 2011-05-03
Assessor(s): Thomas, P.
Reviewer(s): Gardner, M. & Mill, R.
Dacrydium nausoriense is a valuable timber species in Fiji that has been heavily exploited. It has a very restricted distribution  and the estimated area of occupancy is well within the threshold for Endangered under criterion B. It is known from two locations and there is a continuing decline at least in the quality of habitat and probably the number of mature individuals.
Previously published Red List assessments:
1998 Endangered (EN)
1998 Vulnerable (V)

Geographic Range [top]

Range Description: D. nausoriense is restricted to two locations within Fiji: one in the Nausori Highlands in western Viti Levu and the second at Sarava on Vanua Levu. The estimated area of occupancy is much less than 500 km2.
Countries occurrence:
Estimated area of occupancy (AOO) - km2: 499
Continuing decline in extent of occurrence (EOO): Yes
Number of Locations: 2
Lower elevation limit (metres): 300
Upper elevation limit (metres): 600
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Two subpopulations are currently known. On Viti Levu all known stands are within several kilometres of each other and are considered as a single subpopulation within the context of the IUCN Red List Guidelines. The second subpopulation is on Vanua Levu. The number of mature individuals is unknown.
Current Population Trend: Decreasing
Additional data:
Continuing decline of mature individuals: Yes

Habitat and Ecology [top]

Habitat and Ecology: Grows in sub-montane forest  (300-600 m asl); often associated with regrowth in logged forest, abandoned garden sites or the margins of forest with anthropogenic grassland. The rainfall ranges from 2,000 to 3,500  mm per year with a distinct dry season from June to October. Reported to be slow growing, especially when young.
Systems: Terrestrial
Continuing decline in area, extent and/or quality of habitat: Yes
Generation Length (years): 50

Use and Trade [top]

Use and Trade: Highly valued for timber that is used for general construction and carpentry.

Threats [top]

Major Threat(s): The primary threats are overexploitation for timber and loss of habitat due to forest clearance for agriculture and pastoral activities.

Conservation Actions [top]

Conservation Actions: Currently this species is not known to occur in any protected areas although some areas within its range have been identified as priority areas for conservation (Olson et al. 2009). There is an urgent need for further field surveys to establish the size of the remaining population, its distribution and status. Dacrydium nausoriense is listed under Schedule 2 of Fiji's Endangered and Protected Species Act (2002) which provides some regulation of its exploitation.

Citation: Thomas, P. 2013. Dacrydium nausoriense. The IUCN Red List of Threatened Species 2013: e.T31051A2801648. . Downloaded on 30 November 2015.
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