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Nannoscincus manautei 

Scope: Global
Language: English
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_offStatus_cr_onStatus_ew_offStatus_ex_off

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Reptilia Squamata Scincidae

Scientific Name: Nannoscincus manautei
Species Authority: Sadlier, Bauer, Whitaker & Smith, 2004

Assessment Information [top]

Red List Category & Criteria: Critically Endangered B1ab(i,ii,iii,v)+2ab(i,ii,iii,v) ver 3.1
Year Published: 2011
Date Assessed: 2010-10-04
Assessor(s): Whitaker, A.H. & Sadlier, R.A.
Reviewer(s): Tognelli, M. & Cox, N.A.
Justification:
Nannoscincus manautei is listed as Critically Endangered because it is known from a single massif where it is confined to closed forest, thus having a highly restricted area of occupancy. There is a severe threat from ongoing mining activity that is reducing both the extent of occurrence and area of occupancy. There are also some threats from invasive species.

Geographic Range [top]

Range Description:This species is endemic to Province Nord, New Caledonia. It is known only from four sites on the summit of the isolated ultramafic Kopéto massif on the central west coast of Grande Terre. It occurs at elevations between 750 and 1,000 m. The extent of occurrence is approximately 8 km² and the area of occupancy is estimated to be 2 km².

[Extent of occurrence was based on a crude measure of overall length times width of the most distant known locations (a rough measure of the line around the points), except for very widespread species where the published areas of the islands were taken. Area of occupancy is a contraction of that rough estimate for extent of occurrence based on where habitat remains.]

 

Countries occurrence:
Native:
New Caledonia
Additional data:
Estimated area of occupancy (AOO) - km2:2Continuing decline in area of occupancy (AOO):Yes
Estimated extent of occurrence (EOO) - km2:8
Continuing decline in extent of occurrence (EOO):Yes
Number of Locations:1
Lower elevation limit (metres):750
Upper elevation limit (metres):1000
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There are no quantitative data on population size and trends for this species but it appears to be localized and uncommon. It is assumed to have suffered a significant reduction in area of occupancy as a result of the removal of closed montane forest associated with the extensive nickel mining that has occurred at upper elevations on Kopéto. Wildfires from adjacent maquis shrublands may have contributed to habitat loss through damaging forest margins.
Current Population Trend:Unknown
Additional data:
Continuing decline of mature individuals:Yes
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species inhabits closed montane forest. It is cryptozoic, semi-fossorial; terrestrial. It shelters beneath logs, stones and litter, and forages through leaf litter.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Threats [top]

Major Threat(s): There is a major threat to Nannoscincus manautei from further habitat loss arising from the expansion of nickel mining on the Kopéto–Paéoua massif. Habitat degradation by introduced ungulates (deer and pigs), leading to lower humidity, and from pigs disturbing the litter layer and cover are other significant concerns. There may be a low level of risk from wildfires in the adjacent maquis shrublands damaging forest margins reducing the forest extent of small forest remnants. The invasive ant Wasmannia auropunctata has also recently been recorded at high level on the massif but its potential impact is unknown as ant populations are unlikely to flourish at that elevation.

Conservation Actions [top]

Conservation Actions: This species is protected in Province Nord under Code de l'environnement de la Province Nord (Délibération No. 306-2008/APN, 24 October 2008) and in Province Sud under Code de l'environnement de la Province Sud (Délibération No. 25-2009/APS, 20 March 2009). It is not present in any reserves and no conservation management is currently being undertaken.

Citation: Whitaker, A.H. & Sadlier, R.A. 2011. Nannoscincus manautei. The IUCN Red List of Threatened Species 2011: e.T176149A7189060. . Downloaded on 26 February 2017.
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