Macrozamia spiralis

(Salisb.) Miq.

Plante

ENLR Monde (IUCN)

Filtrer le graphe par contexte spatialPays · région · aire protégée · écorégion · biome

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Calcul du tissu écologique de Macrozamia spiralis.

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Liste rouge IUCN

EN · En dangercritères A2c↘Décroissante

Évaluation complète

Évaluation: 2022 · v3.1
Altitude: – m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

Plants are found in scattered colonies within its range, but never in great numbers. It was estimated for the 2003 and 2009 assessments that the population had declined by >50% over three generations and this original record of decline still falls within the period of three generations from the date of the current assessment. There has been no recent field work to determine whether the level of decline has stabilised or increased since the last assessment.

Menaces identifiées(4 menaces classées CMP-IUCN)

1_2
Commercial & industrial areas
Rapid DeclinesMajority (50-90%)Ongoing
2_1_3
Agro-industry farming
Rapid DeclinesMajority (50-90%)Ongoing
3_2
Mining & quarrying
UnknownUnknownPast, Unlikely to Return
5_3_3
Unintentional effects: (subsistence/small scale) [harvest]
UnknownUnknownPast, Unlikely to Return

Description complète des menacesTexte détaillé évaluation IUCNExpert

Macrozamia spiralis occurs in vegetation types that once dominated the areas west of Sydney Australia, including the Cumberland Plain where over 90% of the original vegetation has been cleared. Even though the vegetation in which M. spiralis occurs is included in several protected areas (Werakata National Park, Windsor Downs Nature Reserve, Agnes Banks Nature Reserve, Castlereagh Nature Reserve) these areas were proclaimed mostly between 1990 and 1999 (Agnes Bank was proclaimed in 1982) and the impacts of decline still affect the status of M. spiralis. Prior to the proclamation of these protected areas, the area was affected by land clearing, mineral extraction, timber harvesting, and firewood collection.

Habitats préférentiels (classification IUCN)

1_5Forest - Subtropical/Tropical Dry

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

This species is listed in Appendix II of CITES. Plants occur in the Werakata National Park and in the Windsor Downs Nature Reserve, Castlereagh Nature Reserve and the Agnes Banks Nature Reserve. An education and awareness programme as well as the long-term monitoring of subpopulations will support the conservation of this species.

Actions de conservation (1)Conservation Actions Classification Scheme — IUCNExpert

4_3Awareness & communications

Usage & commerce (1)Use & Trade — IUCNExpert

13Pets/display animals, horticulture
internationalnational

Priorités de recherche (2)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
1_6Actions

Niche IUCN globaleRealms · Systems · LMEs · Growth forms · FAOs — biogéographie IUCNExpert

Royaumes biogéographiques

Australasian

Systèmes (terrestre/eau douce/marin)

Terrestrial

Formes de croissance

CycadShrub - small

Références bibliographiques (6)Sources scientifiques de l'évaluation IUCNExpert

IUCN. 2023. The IUCN Red List of Threatened Species. Version 2023-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 07 December 2023).
IUCN. 2022. The IUCN Red List of Threatened Species. Version 2022-1. Available at: <a href="www.iucnredlist.org">www.iucnredlist.org</a>. (Accessed: 21 July 2022).
Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.
Jones, D.L. 2002. Cycads of the World (2nd edition). Smithsonian Institute Press, Washington, DC.
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: <a href="http://plantnet.rbgsyd.gov.au/PlantNet/cycad/">http://plantnet.rbgsyd.gov.au/PlantNet/cycad/</a>.

Évaluateurs & contributeurs (3)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Bösenberg, J.D.

contributor

Hill, K.D.

evaluator

Donaldson, J.S.

⚠ 1 erratum publié après l'évaluation.

Bösenberg, J.D. 2022. Macrozamia spiralis (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41957A243395751. Accessed on 05 May 2026.