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Marmorosphax taom 

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: Marmorosphax taom
Species Authority: Sadlier, Smith, Bauer & Whitaker, 2009

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:
This species is listed as Critically Endangered because it has a highly restricted distribution and is under a high level of threat from mining. Also there are ongoing threats from invasive species and wildfires.

Geographic Range [top]

Range Description:This species is endemic to Province Nord, New Caledonia. It is known only from the summit area of the ultramafic massif Mount Taom, on the northwestern coast of Grande Terre. It occurs at elevations between 900 and 1,100 m. The extent of occurrence is approximately 2 km², but it is expected to occur more widely on the Kaala massif. The area of occupancy is estimated to be 1 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) - km2:1Continuing decline in area of occupancy (AOO):Yes
Estimated extent of occurrence (EOO) - km2:2
Continuing decline in extent of occurrence (EOO):Yes
Number of Locations:1
Lower elevation limit (metres):900
Upper elevation limit (metres):1100
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:There is no information on population size and trends for this species. It is expected to have undergone a substantial reduction in population size and extent as a result of past destruction of its montane forest habitat by mining activities and from recurrent wildfires in the adjacent maquis shrublands, although the effect of this will have been offset to some extent by its occupation of dense maquis fernlands.
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 forests and maquis fernlands. It is diurno-nocturnal, cryptozoic; terrestrial. It shelters beneath rocks and dense vegetation and forages in cover.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Threats [top]

Major Threat(s): Marmorosphax taom is threatened by further habitat destruction from the expansion of the mining on the massif, resulting in a reduction in the area of occupancy. The part of the population in the maquis is under constant threat from wildfires, which also leads to peripheral damage and reduction in extent of montane forest remnants. Introduced mammals (rodents, cats and pigs) are a potential predation risk and introduced ungulates (deer and pigs) threaten habitat quality, particularly the litter layer.

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. Marmorosphax taom. The IUCN Red List of Threatened Species 2011: e.T176211A7197810. . Downloaded on 26 June 2017.
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