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Macrozamia platyrhachis 

Scope: Global
Language: English
Status_ne_offStatus_dd_offStatus_lc_offStatus_nt_offStatus_vu_onStatus_en_offStatus_cr_offStatus_ew_offStatus_ex_off

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Taxonomy [top]

Kingdom Phylum Class Order Family
Plantae Tracheophyta Cycadopsida Cycadales Zamiaceae

Scientific Name: Macrozamia platyrhachis F.M.Bailey

Assessment Information [top]

Red List Category & Criteria: Vulnerable A3b+4b ver 3.1
Year Published: 2010
Date Assessed: 2009-10-31
Assessor(s): Forster, P.
Reviewer(s): Donaldson, J.S. & Bösenberg, J.D.
Justification:
Classified as Vulnerable based on estimates of ongoing and future decline as a result of reproductive failure.
Previously published Red List assessments:

Geographic Range [top]

Range Description:This species occurs in Central Queensland, Australia, where it grows in the Blackdown Tableland and Expedition Range (Planet Downs) area.
Countries occurrence:
Native:
Australia (Queensland)
Additional data:
Estimated area of occupancy (AOO) - km2:4
Number of Locations:12
Lower elevation limit (metres):600
Upper elevation limit (metres):900
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:This species occurs in at least 12 populations with a projected population size of 611,315 adult plants.
Current Population Trend:Decreasing
Additional data:
Number of mature individuals:611315
Population severely fragmented:No

Habitat and Ecology [top]

Habitat and Ecology:This species is scattered and locally abundant in dry sclerophyll forest on flat plateau country on sandstone.
Systems:Terrestrial
Generation Length (years):60

Threats [top]

Major Threat(s): This species has been affected by habitat loss, with estimates for decline of 10-20% in the past 50 years. However, there appears to be no recruitment and pollination does not seem to be taking place. The future decline is therefore estimated to >30% over three generations.

Conservation Actions [top]

Conservation Actions: This species is listed on Appendix II of the CITES Appendices. This species is well conserved in the Blackdown Tableland National Park.

Classifications [top]

1. Forest -> 1.5. Forest - Subtropical/Tropical Dry
suitability:Suitable  
4. Education & awareness -> 4.3. Awareness & communications

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
  Included in international legislation:Yes
  Subject to any international management/trade controls:Yes
2. Agriculture & aquaculture -> 2.3. Livestock farming & ranching -> 2.3.3. Agro-industry grazing, ranching or farming
♦ timing:Ongoing    
→ Stresses
  • 1. Ecosystem stresses -> 1.1. Ecosystem conversion
  • 1. Ecosystem stresses -> 1.2. Ecosystem degradation

5. Biological resource use -> 5.2. Gathering terrestrial plants -> 5.2.1. Intentional use (species is the target)
♦ timing:Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

5. Biological resource use -> 5.2. Gathering terrestrial plants -> 5.2.3. Persecution/control
♦ timing:Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

1. Research -> 1.3. Life history & ecology
1. Research -> 1.6. Actions

♦  Unknown
 Local : ✓   National : ✓  International : ✓ 

Bibliography [top]

Forster, P. 2007. E-mail.

Hill, K. and Osborne, R. 2001. Cycads of Australia. Simon and Schuster, Chatswood.

Hill, K.D. and Stevenson, D.W. 1998-2006. The Cycad Pages. Available at: http://plantnet.rbgsyd.gov.au/PlantNet/cycad/.

IUCN. 2010. IUCN Red List of Threatened Species (ver. 2010.3). Available at: http://www.iucnredlist.org. (Accessed: 2 September 2010).

Osborne, R. 2000. Focus on Macrozamia platyrachis F.M. Bailey. Encephalartos 61: 4-8.

Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.


Citation: Forster, P. 2010. Macrozamia platyrhachis. The IUCN Red List of Threatened Species 2010: e.T42016A10624948. . Downloaded on 22 September 2018.
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