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Emmenosperma pancherianum 

Scope: Global
Language: English
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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Rhamnales Rhamnaceae

Scientific Name: Emmenosperma pancherianum Baillon

Assessment Information [top]

Red List Category & Criteria: Vulnerable A2ce ver 3.1
Year Published: 2010
Date Assessed: 2007-05-15
Assessor(s): Hequet, V.
Reviewer(s): Pollock, C.M. & Hilton-Taylor, C.
Justification:
Emmenosperma pancherianum is endemic to New Caledonian dry forests (including coastal forests) and its habitat is among the most threatened in the country. Dry forests have been reduced dramatically, both in size and quality. They have been severely cleared for agricultural purposes over the last century and what remains today are highly fragmented patches that suffer intense predation by the introduced Rusa Deer (Cervus timorensis russa). Habitat reduction has been estimated at 95% over the last 150 years (Bouchet 1995), from this it is suspected that a population reduction of at least 30% has occurred over this time period; the actual generation length for this species is not known, but with evidence of dramatic declines in dry forest habitat, it is likely that there has been a population reduction of at least 30% over the last three generations.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to New Caledonia. It must once have been present all along west coast. Today it is found in dry forests from Noumea to Koumac.
Countries occurrence:
Native:
New Caledonia
Additional data:
Estimated area of occupancy (AOO) - km2:21
Number of Locations:16
Upper elevation limit (metres):300
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:Population size is unknown. It has been recorded from 16 different sites where the species is never abundant and typically appears as scattered individuals.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is endemic to New Caledonian dry forests (including coastal forests). 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.
Systems:Terrestrial
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 russa), 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 three protected areas. Moreover, more than 250 young produced from seeds have been planted in the course of restoration programmes.

Citation: Hequet, V. 2010. Emmenosperma pancherianum. The IUCN Red List of Threatened Species 2010: e.T35031A9906991. . Downloaded on 21 November 2017.
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