Document ID: chunk:federal_register_of_legislation:F2025L00287:reg:3:p251
Version: federal_register_of_legislation:F2025L00287
Segment Type: reg
Provision Reference: reg 3 (pt 251/276)
Character Range: 917216–920365

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 habitat protection and rehabilitation. Undertake seed propagation (when seed is available) and replanting in suitable habitat. Carry out rodent control. Carry out targeted weed control and maintenance around existing populations.

Recovery target
The recovery target is shown in Table 150.
Table 150 Recovery target for Ungeria floribunda
EPBC Act status  Estimated population (2023)  Where known populations occur  2034 target
Vulnerable       502                          >95% within the national park  1000

Relevant literature
Christian NE & Mills K (2021) Vegetation Mapping of Norfolk Island 2021. Unpublished data.
Christian M (2024) Personal communication by email, 12 January 2024, independent researcher.
Invasive Species Council & TierraMar (2021) The Native Plant Communities of Norfolk Island. Invasive Species Council, Katoomba, NSW.
Mills K (2024) Personal communication by email, 11 January 2024, plant ecologist.
Orchard A (ed) (1994) Flora of Australia. Vol. 49. Oceanic Islands 1. Australian Government Publishing Service, Canberra.
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 Unpublished report to the Australian National Parks and Wildlife Service, Norfolk Island.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) (2003b) Commonwealth Listing Advice for Norfolk Island Flora - 15 Vulnerable Species.

Wikstroemia australis—kurrajong
Family THYMELAEACEAE

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

Description
A small tree growing to 4 m or taller, with blackish stems and hard, rough bark.

Distribution and abundance
Wikstroemia australis was once widespread over much of Norfolk Island, but since the 1930s it has been reduced to scattered pockets mostly within the Norfolk Island National Park (Tierney 1989).
In 1988, it was widely distributed on the ridges and upper valley sides of the Mt Pitt section of the national park, but there was a critical lack of juvenile plants (Sykes & Atkinson 1988). The lack of regeneration of young plants was probably caused by competition from weeds, particularly red guava (Psidium cattleyanum), unsuitable soil conditions, dry conditions due to climate change and disease (Sykes & Atkinson 1988).
Tierney (1989) noted that young plants successfully established in gaps along the Bird Rock Track with young plants relatively common close to the track in less weedy areas. However, a survey in 1989 suggested a continued decline, with many diseased plants (Gilmour & Helman 1989b).
The total number of mature plants recorded in 2003 was 155 (TSSC 2003g).
A targeted survey by Mills (2010) found a total of 84 plants, including trees and a reasonable number of seedling. Mills (2012b) counted 12 plants at five locations, but noted that the species was not regenerating well, as most seedlings were not surviving.
The population