Document ID: chunk:federal_register_of_legislation:F2025L00287:reg:3:p212
Version: federal_register_of_legislation:F2025L00287
Segment Type: reg
Provision Reference: reg 3 (pt 212/276)
Character Range: 779363–783590

plants (33) were observed in King Fern Valley, to the east of Mount Pitt Road.
The population estimate in 2021 was 160 individuals.
In New Zealand it was listed as "chronically threatened—Serious Decline" (de Lange et al. 2004).
The distribution is shown in Map 43.

Ecology
Little known.

Habitat
This species grows in valleys on south-east mountain slopes (Orchard 1994).

Threats
Illegal collection from the national park has occurred in the past (Braggins 1996). Climate change/dry conditions are also a threat.

Impact on other species
None known.
Map 43 Distribution of Marattia salicina
Green outlines indicate reserves within which the species occurs.

Risk assessment
Risk assessment undertaken for Endangered ferns as a grouping. The risk assessment is shown in Table 103.
Table 103 Risk assessment for Endangered ferns as a grouping
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%)         Moderate     Medium
15. Problems caused by small populations, including lack of genetic diversity                                      Almost certain (91–100%)  Major        Extreme

Management actions
Undertake propagation and revegetation in suitable habitat (including sales to private landholders to reduce pressure on naturally occurring populations). Protect and restore habitat. Investigate sites on public reserves for introduction.

Recovery target
The recovery target is shown in Table 104.
Table 104 Recovery target for Marattia salicina
EPBC Act status  Estimated population (2023)  Where known populations occur  2034 target
Endangered       160                          100% within the national park  250

Relevant literature
Braggins JE (1996) Report on the conservation status of the ferns of Norfolk Island. Unpublished report to the Australian Nature Conservation Agency.
de Lange PJ, Johnson PN, Norton DA, Hitchmough R, Heenan PB, Courteney SP, Molloy B.P.J, Ogle C.C & Rance BD (2004) Threatened and uncommon plants of New Zealand. New Zealand Journal of Botany 42, 45–76.
Orchard A (ed) (1994)