Document ID: chunk:federal_register_of_legislation:F2025L00287:reg:3:p242
Version: federal_register_of_legislation:F2025L00287
Segment Type: reg
Provision Reference: reg 3 (pt 242/276)
Character Range: 884966–889308

(Araucaria heterophylla; Orchard 1994).

Threats
Primary threats to the species include weed invasion and competition, particularly by kikuyu (Cenchrus clandestinus), and climate change.

Impact on other species
None known.

Risk assessment
The risk assessment is shown in Table 139.
Table 139 Risk assessment for Senecio evansianus
Risk                                                                                                               Likelihood of exposure    Consequence  Threat rating
1. Loss and fragmentation of native vegetation through past land clearing                                          Almost certain (91–100%)  Extreme      Extreme
2. Loss and 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                                                                                            Rare (0–10%)              Negligible   Negligible
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%)           Major        High
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%)         Major        High
15. Problems caused by small populations, including lack of genetic diversity                                      Almost certain (91–100%)  Extreme      Extreme

Management actions
Conduct surveys to determine current distribution. Undertake propagation and replanting into suitable habitat areas. Conduct targeted weed control and maintenance. Implement habitat protection and rehabilitation. Monitor populations to determine dynamics.

Recovery target
The recovery target is shown in Table 140.
Table 140 Recovery target for Senecio evansianus
EPBC Act status  Estimated population (2023)  Where known populations occur  2034 target
Endangered       200                          Unknown                        250

Relevant literature
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.
Mills K (2017a) Survey of public reserves on Norfolk Island for threatened plant species: 3. Point Ross Reserve and Bumbora Reserve. Prepared for Norfolk Island Regional Council.
Mills K (2017b) Survey of public reserves on Norfolk Island for threatened plant species: 8. Ball Bay Reserve. Prepared for Norfolk Island Regional Council.
Mills K (2017c) Survey of public reserves on Norfolk Island for threatened plant species: 1. The Kingston Reserves. Prepared for Norfolk Island Regional Council.
Mills K (2017d) Survey of public reserves on Norfolk Island for threatened plant species: 6. Anson Bay Reserve and Selwyn Reserve. Prepared for Norfolk Island Regional Council.
Mills K (2017e) Survey