Environment Protection and Biodiversity Conservation (Recovery Plan— Dasyornis brachypterus) Instrument 2023
Appendix 1: Threat assessment criteriaAppendix 1: Threat assessment criteria
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Image unavailable in extracted textImage unavailable in extracted textAppendix 1: Threat assessment criteria
The approach to assessing current threats was taken from the Conservation Standards, an internationally adopted set of principles and practices for conservation project design, management, and monitoring developed by the Conservation Measures Partnership.
The following assessment criteria were used to assess current threats, where the
‘target’ is the Eastern Bristlebird.
Scope – Defined spatially as the proportion of the target that can reasonably be expected to be affected by the threat within ten years given the continuation of current circumstances and trends. For species, measured as the proportion of the target’s population.
• Very High: The threat is likely to be pervasive in its scope, affecting the target across all or most (71–100%) of its occurrence/population.
• High: The threat is likely to be widespread in its scope, affecting the target across much (31–70%) of its occurrence/population.
• Medium: The threat is likely to be restricted in its scope, affecting the target across some (11–30%) of its occurrence/population.
• Low: The threat is likely to be very narrow in its scope, affecting the target across a small proportion (1–10%) of its occurrence/population.
Severity – Within the scope, the level of damage to the target from the threat that can reasonably be expected if current circumstances and trends persist. For species,
usually measured as the degree of reduction of the target population within 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.