Document ID: chunk:federal_register_of_legislation:F2025L00287:reg:3:p222
Version: federal_register_of_legislation:F2025L00287
Segment Type: reg
Provision Reference: reg 3 (pt 222/276)
Character Range: 814723–818873

fragmentation of native vegetation through current or future land clearing                             Rare (0–10%)              Negligible   Negligible
3. Degradation of native vegetation through past grazing or loss of nutrients                                      Almost certain (91–100%)  Extreme      Extreme
4. Degradation of native vegetation through current or future grazing                                              Possible (26–50%)         Moderate     Medium
6. Predation by rodents                                                                                            Possible (26–50%)         Minor        Low
7. Predation by cats                                                                                               Rare (0–10%)              Negligible   Negligible
8. Predation or damage by chickens                                                                                 Rare (0–10%)              Negligible   Negligible
9. Predation by swamphens                                                                                          Rare (0–10%)              Negligible   Negligible
10. Predation by Argentine ant                                                                                     Rare (0–10%)              Negligible   Negligible
11. Competition from/change of habitat because of weed invasion                                                    Likely (51–90%)           Moderate     Medium
12. Infection by pathogens already present                                                                         Rare (0–10%)              Negligible   Negligible
13. Impacts of potential new invasive species or pathogens                                                         Unlikely (11–25%)         Minor        Low
14. Changes to vegetation, increased fire risk and/or direct physiological stress as a result of climatic changes  Possible (26–50%)         Moderate     Medium
15. Problems caused by small populations, including lack of genetic diversity                                      Possible (26–50%)         Moderate     Medium

Management actions
Undertake propagation from cuttings from individuals on Norfolk Island and Phillip Island and replanting into appropriate areas. Conduct research into seed propagation techniques. Implement habitat protection and rehabilitation. Undertake targeted weed control and maintenance. Undertake research into taxonomic differences between the populations from Phillip Island and Norfolk Island and compare with those from New Zealand.

Recovery target
The recovery target is shown in Table 116.
Table 116 Recovery target for Muehlenbeckia australis
EPBC Act status  Estimated population (2023)  Where known populations occur  2034 target
Endangered       100                          100% within the national park  250

Relevant literature
Mills K (2009b) The Vegetation of Phillip Island, Norfolk Island Group. Envirofund 2007/2008. Kevin Mills & Associates, Jamberoo, NSW.
Mills K (2012b) The Flora of Norfolk Island. Report 14. The Endangered Plants in the national park: Field Survey and Review. Kevin Mills & Associates, Jamberoo, NSW.
Orchard A (ed) (1994) Flora of Australia. Vol. 49. Oceanic Islands 1. Australian Government Publishing Service, Canberra.
TSSC (Threatened Species Scientific Committee) (2003c) Commonwealth Listing Advice for Norfolk Island Flora – 16 Endangered Species.

Myoporum obscurum—popwood
Family MYOPORACEAE

Conservation significance
Endemic to Norfolk Island.
EPBC Act Listing Status: Critically Endangered.

Description
Shrub or small spreading tree growing to 7 m tall with shiny green foliage.

Distribution and abundance
In 1988, the species was found on the northern slopes of the Norfolk Island National Park and on Mt Bates Road, but only four trees were sighted. It was not present on Phillip Island, although it was recorded there in the 1830s (Sykes & Atkinson 1988). A survey in 1989 failed to locate additional individuals again, confirming that this species was very rare in the national park (Gilmour & Helman 1989b). There were only five mature, seed-producing individuals of Myoporum