Document ID: chunk:federal_register_of_legislation:F2025L00287:reg:3:p245
Version: federal_register_of_legislation:F2025L00287
Segment Type: reg
Provision Reference: reg 3 (pt 245/276)
Character Range: 895863–899989

transects within the national park, with 107 plants counted. All age classes were observed, and good regeneration was reported. The species also occurs in Cascade, Ball Bay and Selwyn Reserves, in small numbers (Mills 2017b, d and f).
The population estimate in 2021 was 259.
The distribution is shown in Map 62.

Ecology
Many trees are male and cannot produce seed (Sykes & Atkinson 1988), although male and female flowers can be seen on individual trees (K Mills 2024. pers comm 11 January).

Habitat
Occurs in sheltered coastal forest (Invasive Species Council & TierraMar 2021).

Threats
The main threats to the species are competition from weeds and cattle grazing (TSSC 2016c). Phytophthora cinnamomi is potentially a major risk.
At the time of the previous recovery plan (Director of National Parks 2010), a parasite appeared to be stopping seed setting in many individuals (TSSC 2016c).) Insect larvae (possibly a moth species) appear to feed on the developing fruit and destroy the seeds (K Mills 2024. pers comm 11 January). This requires further investigation.
Map 62 Distribution of Streblus pendulinus
Green outlines indicate reserves within which the species occurs. Green shading shows plant communities within which the species may occur (Christian & Mills 2021). Points show recorded locations (Mills 20017b, d and f).

Impact on other species
None known.

Risk assessment
Risk assessment undertaken for Endangered trees/shrubs as a grouping. The risk assessment is shown in Table 143.
Table 143 Risk assessment for Endangered trees/shrubs 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                                                                                            Almost certain (91–100%)  Major        Extreme
7. Predation by cats                                                                                               Rare (0–10%)              Negligible   Negligible
8. Predation or damage by chickens                                                                                 Likely (51–90%)           Moderate     Medium
9. Predation by swamphens                                                                                          Rare (0–10%)              Negligible   Negligible
10. Predation by Argentine ant                                                                                     Possible (26–50%)         Minor        Low
11. Competition from/change of habitat because of weed invasion                                                    Likely (51–90%)           Moderate     Medium
12. Infection by pathogens already present                                                                         Possible (26–50%)         Moderate     Medium
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%)         Major        High

Management actions
Undertake research to determine the best method of treating the parasite. Implement targeted weed control