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Nannoscincus garrulus 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Reptilia Squamata Scincidae

Scientific Name: Nannoscincus garrulus
Species Authority: Sadlier, Bauer & Smith, 2006
Taxonomic Notes:

 

Assessment Information [top]

Red List Category & Criteria: Endangered B1ab(i,ii,iii)+2ab(i,ii,iii) 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:
This species is listed as Endangered because it is known from two locations over a small range (approximately 5 km apart). The existing forest remnants are disjunct and present as remnant patches and habitat quality has declined markedly in the last five years due to invasion by deer. Wildfires pose a constant threat to habitat extent and area of occupancy. The larger subpopulation is within a reserve but the other is potentially threatened by mining.

Geographic Range [top]

Range Description:This species is endemic to Province Sud, New Caledonia. It is known only from Pic Ningua and Mount Çidoa, south of Thio in the central ranges of southern Grande Terre. It occurs at elevations above 900 m. The extent of occurrence is approximately 36 km², and the area of occupancy is estimated to be <10 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) - km2:9Continuing decline in area of occupancy (AOO):Yes
Estimated extent of occurrence (EOO) - km2:36
Continuing decline in extent of occurrence (EOO):Yes
Number of Locations:2
Lower elevation limit (metres):900
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 locally common. It is presumed to have suffered a significant reduction in area of occupancy from the loss of closed montane forest habitat that has occurred because of extensive mining and widespread wildfires on both peaks.
Current Population Trend:Unknown
Additional data:
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 and stones and forages through leaf litter.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Threats [top]

Major Threat(s): Nannoscincus garrulus is under particular threat from further habitat loss and fragmentation. At present this species is known only in forest remnants that are vulnerable to damage or destruction from the nickel mining that is occurring on the massif. Wildfires in the adjacent maquis shrublands are an added threat as damage forest margins, reducing the forest extent. Habitat degradation by introduced ungulates (deer and pigs), leading to lower humidity, and from pigs disturbing the litter layer and cover are other significant issues. Predation by rodents may be a risk.

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 present in La réserve naturelle du Pic Ningua. No specific conservation management is currently being undertaken.

Citation: Whitaker, A.H. & Sadlier, R.A. 2011. Nannoscincus garrulus. The IUCN Red List of Threatened Species 2011: e.T176146A7188646. . Downloaded on 28 March 2017.
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