Document ID: chunk:federal_register_of_legislation:F2024L00006:reg:3:p57
Version: federal_register_of_legislation:F2024L00006
Segment Type: reg
Provision Reference: reg 3 (pt 57/58)
Character Range: 233327–237449

the scope.
•      Very High: The threat is likely to destroy or eliminate the target or reduce its population by 71–100% within 3 years or 3 generations.

•      High: The threat is likely to seriously degrade/reduce the target or reduce its population by 31–70% within 10 years or 3 generations.

•      Medium: The threat is likely to moderately degrade/reduce the target or reduce its population by 11–30% within ten years or three generations.

•      Low: The threat is likely to only slightly degrade/reduce the target or reduce its population by 1–10% within ten years or three generations.

 Irreversibility – The degree to which the effects of a threat can be reversed, and the target affected by the threat restored.
   •      Very High: The effects of the threat cannot be reversed, and it is very unlikely the target can be restored, and/or it would take more than 100 years to achieve this.

   •      High: The effects of the threat technically can be reversed, and the target restored
   but it is not affordable and/or it would take 21–100 years to achieve this.
   •      Medium: The effects of the threat can be reversed, and the target restored with a
   reasonable commitment of resources and/or within 6–20 years.
   •      Low: The effects of the threat are easily reversible, and the target can be easily restored at a relatively low cost and/or within 0–5 years.

             Appendix 2: Spatial distribution of current threats

           Current threats (as of 2020/21) to the Eastern Bristlebird, ranked according to an overall threat rating derived from an assessment of scope, severity, and irreversibility (see Appendix 1 for detailed criteria).

Threat                                               Scope       Severity    Irreversibility   Overall rating
Inappropriate fire regimes arising from wildfire     Very High   Very High   High              Very High
Inappropriate fire regimes arising from management   Very High   High        Medium            High
Climate change                                       Very High   Medium      High              Medium
Lack of genetic diversity                            High        Medium      Medium            Medium
Dieback and invasive weeds                           High        Medium      Medium            Medium
Northern population                                  High        Medium      Medium            Medium
Central population                                   Low         Low         Low               Low
Southern population                                  Low         Low         Low               Low
Drought                                              High        Medium      Medium            Medium
Predation by foxes                                   High        High        Low               Medium
Northern population                                  Low         Low         Low               Low
Central population                                   High        High        Low               Medium
Southern population                                  Low         Low         Low               Low
Predation by feral cats                              Medium      Medium      High              Medium
Northern population                                  Medium      Medium      High              Medium
Central population                                   Medium      Low         Low               Low
Southern population                                  Medium      Low         Medium            Low
Disease (wild populations)                           Medium      High        Medium            Medium
Disease (captive populations)                        Low         High        Medium            Low
Clearing of habitat                                  Low         Very High   High              Low
Feral pigs Northern population                       Low         Medium      Medium            Low
Overabundant herbivores                              Low         Low         Medium            Low
Human disturbance                                    Low         Low         Low               Low