Macrozamia pauli-guilielmi

W.Hill & F.Muell.

Plante

ENLR Monde (IUCN)

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

Graphe en cours d’indexation

Calcul du tissu écologique de Macrozamia pauli-guilielmi.

Le graphe apparaîtra automatiquement dès que le calcul est terminé (rafraîchissement toutes les 5s).

Liste rouge IUCN

EN · En dangercritères A2cd↘Décroissante

Évaluation complète

Évaluation: 2022 · v3.1
Altitude: 5 – 25 m
Profondeur: – m

État de la populationTexte officiel évaluation IUCNExpert

Macrozamia pauli-guilielmi is known from at least 27 subpopulations. These range in size from a single adult plant to at least 3,600 individuals. Most of the subpopulations in State Forest 519 could be considered as being part of a single, much fragmented metapopulation. M. pauli-guilielmi' s range occupies at least 35ha, and with at least 13,131 adult individuals present. Our lack of knowledge about the biology of this species makes it extremely difficult to estimate a minimum viable population. Most of the subpopulations of M. pauli-guilielmi show evidence of insect pollination and seedling recruitment (Queensland Herbarium 2007).

Menaces identifiées(5 menaces classées CMP-IUCN)

2_2_2
Agro-industry plantations
UnknownUnknownOngoing
2_1_3
Agro-industry farming
Ongoing
2_3_3
Agro-industry grazing, ranching or farming
Ongoing
5_2_1
Intentional use (species is the target)
Ongoing
7_1_1
Increase in fire frequency/intensity
Ongoing

Description complète des menacesTexte détaillé évaluation IUCNExpert

This species has been affected by the destruction of habitat for pastures, forestry and other agriculture e.g. pineapples. Many plants have been removed from habitat for collectors and for general garden use. The habitats of Macrozamia platyrhachis and M. pauli-guilielmi are extremely fire-prone and are burnt irregularly on two year, or longer, intervals. The fires are often intense, uncontrolled and may be started by lightning or burning off on adjacent pastoral land, state forests or national parks (Queensland Herbarium 2007).

Habitats préférentiels (classification IUCN)

1_5Forest - Subtropical/Tropical Dry

Mesures de conservation recommandéesStratégies de conservation IUCNExpert

This species is listed in Appendix II of the CITES Appendices. Plants occur in the Great Sandy National Park. An education and awareness programme as well as the long-term monitoring of subpopulations will support the conservation of this species.

Actions de conservation (4)Conservation Actions Classification Scheme — IUCNExpert

1_1Site/area protection
1_2Resource & habitat protection
4_3Awareness & communications
6_1Linked enterprises & livelihood alternatives

Stress écologiques (8)Stresses Classification — IUCNExpert

1_1Ecosystem conversion
1_1Ecosystem conversion
1_1Ecosystem conversion
1_2Ecosystem degradation
1_2Ecosystem degradation
1_2Ecosystem degradation
2_1Species mortality
2_1Species mortality

Usage & commerce (1)Use & Trade — IUCNExpert

13Pets/display animals, horticulture
internationalnational

Priorités de recherche (2)Research Needed Classification — IUCNExpert

1_2Population size, distribution & trends
3_1Population trends

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 (5)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).
Queensland Herbarium. 2007. National Multi-species Recovery Plan for the cycads, Cycas megacarpa, Cycas ophiolitica, Macrozamia cranei, Macrozamia lomandroides, Macrozamia pauli-guilielmi and Macrozamia platyrhachis. Report to Department of the Environment and Water Resources, Canberra. Queensland Parks and Wildlife Service, Brisbane.
Whitelock, L.M. 2002. The Cycads. Timber Press, Portland, Oregon.
Hill, K. and Osborne, R. 2001. Cycads of Australia. Simon and Schuster, Chatswood.

Évaluateurs & contributeurs (2)Personnes ayant contribué à l'évaluation IUCNExpert

assessor

Bösenberg, J.D.

evaluator

Donaldson, J.S.

⚠ 1 erratum publié après l'évaluation.

Bösenberg, J.D. 2022. Macrozamia pauli-guilielmi (errata version published in 2023). The IUCN Red List of Threatened Species 2022: e.T41956A243394136. Accessed on 05 May 2026.