Map_thumbnail_large_font

Amentotaxus hatuyenensis 

Scope: Global
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_offStatus_en_onStatus_cr_offStatus_ew_offStatus_ex_off

Translate page into:

Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Pinopsida Pinales Taxaceae

Scientific Name: Amentotaxus hatuyenensis
Species Authority: Hiep
Taxonomic Source(s): Farjon, A. 2010. A Handbook of the World's Conifers. Koninklijke Brill, Leiden.
Taxonomic Notes: This species is close to A. yunnanensis and A. poilanei and differs mainly in the colour of the stomatal bands, which are brownish not whitish. Although it was described in 1996, it is still poorly known.

Assessment Information [top]

Red List Category & Criteria: Endangered A2c; C2a(i) ver 3.1
Year Published: 2013
Date Assessed: 2010-08-10
Assessor(s): Nguyen, T.H., Phan, K.L., Nguyen, Q.H. & Thomas, P.
Reviewer(s): Gardner, M. & Farjon, A.
Justification:
The assessment of Endangered is based on an estimated 50% reduction in the habitat quality due to the impacts of deforestation within its known distribution combined with a very small population of less than 250 mature individuals which is undergoing continuing decline.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Only known from two almost adjoining localities in Ha Giang province in northern Viet Nam.
Countries occurrence:
Native:
Viet Nam
Additional data:
Number of Locations:2
Lower elevation limit (metres):1000
Upper elevation limit (metres):1500
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:The total population is estimated to be less than 250 mature individuals.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:249Continuing decline of mature individuals:Yes
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:Occurs in primary closed evergreen tropical seasonal mixed on slopes or on top ridges of submontane forests on karst limestone formations between 1,000 and 1,500 m amsl. Other conifers that may be associated with it include Pinus fenzeliana s.l., Tsuga chinensis, Cephalotaxus mannii, Podocarpus neriifolius, Nageia fleuryi and Podocarpus pilgeri.  The woodland is extremely rich in epiphytes, e.g., orchids, and includes many endemics.
Systems:Terrestrial
Continuing decline in area, extent and/or quality of habitat:Yes

Use and Trade [top]

Use and Trade: No specific uses have been recorded.

Threats [top]

Major Threat(s): Forest fragmentation, decline of habitat due to forest fire, poor natural regeneration and longer term effects of the conversion of surrounding habitats for agricultural use are the main threats.

Conservation Actions [top]

Conservation Actions: Currently only recorded from one protected area (Bat Dai Son Nature Reserve).

Classifications [top]

1. Forest -> 1.6. Forest - Subtropical/Tropical Moist Lowland
suitability:Suitable  major importance:Yes
1. Forest -> 1.9. Forest - Subtropical/Tropical Moist Montane
suitability:Suitable  major importance:Yes

In-Place Research, Monitoring and Planning
  Action Recovery plan:No
  Systematic monitoring scheme:No
In-Place Land/Water Protection and Management
  Occur in at least one PA:Yes
  Percentage of population protected by PAs (0-100):50
  Invasive species control or prevention:No
In-Place Species Management
  Harvest management plan:No
  Successfully reintroduced or introduced beningly:No
  Subject to ex-situ conservation:No
In-Place Education
  Subject to recent education and awareness programmes:No
  Included in international legislation:No
  Subject to any international management/trade controls:No
2. Agriculture & aquaculture -> 2.1. Annual & perennial non-timber crops -> 2.1.1. Shifting agriculture
♦ timing:Ongoing ♦ scope:Minority (<50%) ♦ severity:Slow, Significant Declines ⇒ Impact score:Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.3. Logging & wood harvesting -> 5.3.3. Unintentional effects: (subsistence/small scale)
♦ timing:Ongoing ♦ scope:Minority (<50%) ♦ severity:Slow, Significant Declines ⇒ Impact score:Low Impact: 5 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

9. Pollution -> 9.5. Air-borne pollutants -> 9.5.1. Acid rain
♦ timing:Ongoing ♦ scope:Whole (>90%) ♦ severity:Unknown ⇒ Impact score:Unknown 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

11. Climate change & severe weather -> 11.1. Habitat shifting & alteration
♦ timing:Ongoing ♦ scope:Whole (>90%) ♦ severity:Unknown ⇒ Impact score:Unknown 
→ Stresses
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

1. Research -> 1.1. Taxonomy
1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology

Bibliography [top]

Farjon, A. 2001. World Checklist and Bibliography of Conifers. 2nd edition. The Royal Botanic Gardens, Kew.

Farjon, A. 2010. A Handbook of the World's Conifers. Koninklijke Brill, Leiden.

IUCN. 2013. IUCN Red List of Threatened Species (ver. 2013.1). Available at: http://www.iucnredlist.org. (Accessed: 12 June 2013).

Nguyen, T.H., Phan, K.L., Nguyen, D.T.L.,Thomas, P.I., Farjon, A., Averyanov, L. and Regalado Jr., J. 2004. Vietnam Conifers: Conservation Status Review 2004. Fauna & Flora International, Vietnam, Hanoi.

Nguyen Tien Hiêp and Vidal, J.E. 1996. Flore du Cambodge di Laos et du Vietnam. Muséum National D'Histoire Naturelle, Paris.


Citation: Nguyen, T.H., Phan, K.L., Nguyen, Q.H. & Thomas, P. 2013. Amentotaxus hatuyenensis. The IUCN Red List of Threatened Species 2013: e.T42602A2988205. . Downloaded on 30 July 2016.
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