Map_thumbnail_large_font

Syzygium poyanum 

Scope: Global
Language: English
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_onStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

Translate page into:

Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Magnoliopsida Myrtales Myrtaceae

Scientific Name: Syzygium poyanum J.W. Dawson

Assessment Information [top]

Red List Category & Criteria: Vulnerable B1ab(iii)+2ab(iii) ver 3.1
Year Published: 2010
Date Assessed: 2007-05-15
Assessor(s): Hequet, V.
Reviewer(s): Pollock, C.M. & Hilton-Taylor, C.
Justification:
Syzygium poyanum has an extent of occurrence (EOO) of 322 km² and an area of occupancy (AOO) of 24 km². The species is endemic to New Caledonia, where it is known from six locations, all in Poya. Its habitat is among the most threatened in New Caledonia; dry forests have been reduced dramatically, both in size and quality. They have been intensively cut 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) and uncontrolled fires. Reduction of habitat has been estimated at 95% over the last 150 years (Bouchet 1995) and degradation continues today.

Geographic Range [top]

Range Description:This species is endemic to New Caledonia, where it is known from six locations all in Poya region. Its total extent of occurrence is 322 km², and its estimated area of occupancy within this range is 24 km².
Countries occurrence:
Native:
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. When present, the species usually occurs as rare and scattered individuals but it can sometimes forms small groups of less than ten individuals. Little regeneration has been observed around adult trees.
Current Population Trend:Unknown
Additional data:
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species inhabits tropical dry forests and is exceptionally met on ultramafic soils. 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. Because of the richness of their soil and their mining value, vegetation on ultramafic soils often are very impacted habitats.
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 (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. For all subpopulations in maquis, mining is the major threat.

Conservation Actions [top]

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

Citation: Hequet, V. 2010. Syzygium poyanum. The IUCN Red List of Threatened Species 2010: e.T177858A7471068. . Downloaded on 21 November 2017.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided