Celtis balansae 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Rosales Cannabaceae

Scientific Name: Celtis balansae Planchon

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii)+2ab(iii) 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.
The known distribution of Celtis balansae, as well as its presence in habitats as varied as dry forests and mesic forests, probably illustrates the limited information available for this species. It is endemic to New Caledonia, where its extent of occurrence (EOO) is 2,063 km² and area of occupancy (AOO) is 24 km². It is known from six locations, half of them being in dry forest habitat which is one of the most threatened habitat of New Caledonia. The reduction of dry forests has been estimated at 95% over the last 150 years (Bouchet 1995) and this degradation continues today.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species is endemic to New Caledonia, where it is only present in the south part of the main island (Grande Terre) and has a fragmented distribution. It is found between Paita and Dumbea, then in Bourail, Farino and Canala. Distances between sites are 70, 30 and 32 km. Its total extent of occurrence is 2,063 km², and its estimated area of occupancy within this range is 24 km².
Countries occurrence:
New Caledonia
Additional data:
Estimated area of occupancy (AOO) - km2:24
Number of Locations:6
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The population size is unknown but the species is never common and only known from a few herbarium specimens.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:It is known from dry forests and mesic forests. There's a need to clarify habitat and ecology of this species.
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 (Cervus 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: None for the moment.

Citation: Hequet, V. 2010. Celtis balansae. The IUCN Red List of Threatened Species 2010: e.T37424A10053246. . Downloaded on 22 July 2018.
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