Document ID: chunk:federal_register_of_legislation:F2025L00287:reg:3:p211
Version: federal_register_of_legislation:F2025L00287
Segment Type: reg
Provision Reference: reg 3 (pt 211/276)
Character Range: 775874–779608

(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                                      Unlikely (11–25%)         Moderate     Low

Management actions
Implement revegetation/habitat restoration. Undertake ongoing targeted weed control and maintenance. Exclude or manage cattle grazing. Monitor to determine population dynamics.

Recovery target
The recovery target is shown in Table 102.
Table 102 Recovery target for Lastreopsis calantha
EPBC Act status  Estimated population (2023)  Where known populations occur  2034 target
Endangered       148                          100% within the national park  250

Relevant literature
Christian NE & Mills K (2021) Vegetation Mapping of Norfolk Island 2021. Unpublished data.
Braggins JE (1996) Report on the conservation status of the ferns of Norfolk Island. Unpublished report to the Australian Nature Conservation Agency.
Orchard A (ed) (1994) Flora of Australia. Vol. 49. Oceanic Islands 1. Australian Government Publishing Service, Canberra.
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.
Sykes W & Atkinson I (1988) Rare and Endangered Plants of Norfolk Island. Unpublished report to the Australian National Parks and Wildlife Service, Norfolk Island.
TSSC (Threatened Species Scientific Committee) (2003c) Commonwealth Listing Advice for Norfolk Island Flora – 16 Endangered Species.

Marattia salicina (Ptisana salicina)—king fern, para, potato fern
Family MARATTIACEAE

Conservation significance
Australian distribution restricted to Norfolk Island; it is also found in New Zealand
EPBC Act Listing Status: Endangered
This species is listed under the EPBC Act as Marattia salicina. Now known as Ptisana salicina, Marattia salicina is also listed as a synonym.

Description
Large robust fern with fronds growing to 6m long.

Distribution and abundance
It was reported from several sites within the Norfolk Island National Park with some regeneration in 1996 (Braggins 1996). In 2003 there were fewer than 100 mature individuals, which were all within the Mt Pitt section of the national park (TSSC 2003c). Mills (2012b) recorded 44 plants in six valleys within the national park. The largest number of 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