Document ID: chunk:federal_register_of_legislation:F2025L00287:reg:3:p66
Version: federal_register_of_legislation:F2025L00287
Segment Type: reg
Provision Reference: reg 3 (pt 66/276)
Character Range: 251714–255589

rating, likelihood of exposure to the pressure and the consequence were estimated using a risk matrix (Table 19).
In this assessment, each threatened species was considered individually. A small number of additional species were included—the Norfolk Island stag beetle (listed on the IUCN Red List of Threatened Species though not under the EPBC Act), the slender-billed white-eye and several priority seabirds: white-necked petrel, providence petrel and sooty tern.
The assessment was done by scientists and conservation practitioners with expertise in the different species, with results combined. Risks were assessed for the current distributions of the threatened species and the relevant pressure. In addition, there was a separate assessment of risks posed to some species currently restricted to Phillip Island, assuming they were to recolonise or be reintroduced to Norfolk Island. A summary of results is presented in Table 20 with more detailed information in Part 6.
Table 19 Risk matrix used to assess risks to species
Likelihood of exposure    Negligible consequence  Minor consequence  Moderate consequence  Major consequence  Extreme consequence
Almost certain (91–100%)  Negligible risk         Medium risk        High risk             Extreme risk       Extreme risk
Likely (51–90%)           Negligible risk         Medium risk        Medium risk           High risk          Extreme risk
Possible (26–50%)         Negligible risk         Low risk           Medium risk           High risk          High risk
Unlikely (11–25%)         Negligible risk         Low risk           Low risk              Medium risk        Medium risk
Rare (0–10%)              Negligible risk         Negligible risk    Negligible risk       Low risk           Medium risk

For this assessment, exposure was defined as the likelihood of the pressure acting on the species in some way, either directly (for example, through competition or predation) or indirectly (for example, through reducing the availability of a food source).
Likelihood of exposure categories (adapted from the national standard for risk management AS/NZS 4360:2004) are:
    * Almost certain—expected to occur in most circumstances
    * Likely—will probably occur in most circumstances
    * Possible—could occur
    * Unlikely—could occur but not expected
    * Rare—occurs only in exceptional circumstances.
Consequence categories are:
    * Negligible—the pressure does not act on the species, no long-term effect on individuals or populations
    * Minor—individuals may be adversely affected but no effect at population level
    * Moderate—population recovery is stable or declining
    * Major—population decline is ongoing
    * Extreme—population trajectory is towards extinction.
In assessing consequence, it was assumed that all pressures other than the one under consideration were being managed sufficiently to not be affecting the species.
Table 20 Summary of severity of risk posed by each pressure to each species
Species type                               Species                        Past vegetation loss  Current vegetation loss  Past vegetation degradation  Current vegetation degradation  Lack of nest sites  Rodent predation  Cat predation  Predation or damage by chickens  Swamp-hen predation  Argentine ant predation  Weeds       Present pathogens  Potential new invasives  Climate change  Small

                                                                                                                                                                                                                                                                                                                                                                                                  populations
Fauna                                      Campbell's keeled glass‑snail  Extreme