Solanum pancheri 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Solanales Solanaceae

Scientific Name: Solanum pancheri Guillaumin

Assessment Information [top]

Red List Category & Criteria: Near Threatened ver 3.1
Year Published: 2010
Date Assessed: 2007-05-15
Needs updating
Assessor(s): Hequet, V.
Reviewer(s): Pollock, C.M. & Hilton-Taylor, C.
Solanum pancheri has an extent of occurrence (EOO) of 8,836 km² and an area of occupancy (AOO) of 53 km². It is mostly found in dry forests in New Caledonia but occasionally it can be found in maquis. It has been collected from collections in 19 locations, but all but one of these collections were made before 1990. Given the rate of loss of dry forest habitat, many of those sites may not exist today. This species' habitat is among the most threatened in New Caledonia: dry forests have been reduced dramatically, both in size and in quality. They have been severely cleared for agricultural purposes over the last century and what remains today are highly fragmented patches that are swept over by fire every year during the dry season. Moreover, S. pancheri suffers intense predation by the introduced Rusa Deer (de Garine-Wichatitsky 2005). The reduction of suitable habitat has been estimated at 95% over the last 150 years (Bouchet 1995) and this degradation continues. The species is assessed as Near Threatened because it almost meets the criteria thresholds for a threatened listing under criterion B.

Geographic Range [top]

Range Description:This species is endemic to New Caledonia. It must once have been present all along west coast but today it is restricted to remnant patches of dry forests. It is recorded from Prony, Noumea, Paita, Bourail, Poya, Koné, Voh and Poum with some gaps in the distribution as large as 104 and 95 km. Records from all but one locality date from before 1990. Considering the rate of extinction of dry forest patches, it is suspected that this species has been extirpated from many of these sites. Its total extent of occurrence is 8,836 km², and its estimated area of occupancy within this range is 53 km².
Countries occurrence:
New Caledonia
Additional data:
Estimated area of occupancy (AOO) - km2:53
Number of Locations:19
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The population size is unknown but when present, the species appears as rare and scattered individuals.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is mostly present in dry forests but it is exceptionally met in maquis. Tropical dry forests are probably among the world’s most endangered of all lowland tropical forests. Because of their propensity to become pastures and their susceptibility to fire, dry forests have reduced dramatically, in size as well as in quality. In New Caledonia, they’ve been intensively cut for agricultural purposes for a century; what remains today are highly fragmented patches that have been estimated at 2% of the original area.
Continuing decline in area, extent and/or quality of habitat:Yes

Threats [top]

Major Threat(s): The major threat is lowland clearing for cattle grazing and agriculture, which began in the 1850s and is ongoing. Another threat comes from the Rusa Deer (Rusa timorensis), which was introduced in the 1880s and adapted extremely well to the Caledonian habitats. Its population may have reached 105,000–110,000 individuals in the wild. This deer consumes a wide variety of plant species and also causes severe damage to trees by rubbing antlers against tree stems. The third major threat is uncontrolled fires that sweep across lowlands of New Caledonia each year during the dry season and have slowly transformed remnant patches of dry forest into shrubland dominated by Acacia spirorbis and Leucaena leucocephala, or Niaouli (Melaleuca quinquenervia) savannas.

Conservation Actions [top]

Conservation Actions: This species is present in one protected area.

Citation: Hequet, V. 2010. Solanum pancheri. The IUCN Red List of Threatened Species 2010: e.T177871A7473675. . Downloaded on 20 September 2018.
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