Estimated number of mature individuals < 250 < 2,500 < 10,000 AND either (C1) or (C2) is true C1 An observed, estimated or projected Very high rate High rate Substantial rate continuing decline of at least (up to 25% in 3 years or 1 20% in 5 years or 2 10% in 10 years or 3 a max. of 100 years in future) generation generation generations (whichever is longer) (whichever is (whichever is longer) longer) C2 An observed, estimated, projected or inferred continuing decline AND its geographic distribution is precarious for its survival based on at least 1 of the following 3 conditions: (i) Number of mature individuals in 50 250 1,000 ≤ ≤ ≤ each subpopulation (a) (ii) % of mature individuals in one 90 100% 95 100% 100% – – subpopulation = (b) Extreme fluctuations in the number of mature individuals Evidence: The total population in natural and reintroduced subpopulations in 2010 was estimated to be 11 000 to 32 000. Since then it is likely that one of the original four subpopulations, at Tutanning Nature Reserve, no longer survives (N. Marlow, pers. comm., cited in Woinarski et al., 2014), and the Venus Bay peninsula population in South Australia has crashed to almost undetectable levels due to predation by feral cats and possible depletion of food resources within the fenced peninsula. The data presented above appear to be insufficient to demonstrate if the species is eligible for listing under this criterion. However, the purpose of this consultation document is to elicit additional information to better understand the species’ status. This conclusion should therefore be considered to be tentative at this stage, as it may be changed as a result of responses to this consultation process. Criterion 4. Number of mature individuals Critically Endangered Endangered Vulnerable Extremely low Very Low Low Number of mature individuals < 50 < 250 < 1,000 Evidence: The number of mature individuals in natural and reintroduced subpopulations in 2010 was estimated to be 11 000 to 32 000 (Woinarski et al., 2014). The data presented above appear to demonstrate the species is not eligible for listing under this criterion. However, the purpose of this consultation document is to elicit additional information to better understand the species’ status. This conclusion should therefore be considered to be tentative at this stage, as it may be changed as a result of responses to this consultation process.
Estimated number of mature individuals < 250 < 2,500 < 10,000 AND either (C1) or (C2) is true C1 An observed, estimated or projected continuing decline of at least (up to a max. of 100 years in future) Very high rate 25% in 3 years or 1 generation (whichever is longer) High rate 20% in 5 years or 2 generation (whichever is longer) Substantial rate 10% in 10 years or 3 generations (whichever is longer) C2 An observed, estimated, projected or inferred continuing decline AND its geographic distribution is precarious for its survival based on at least 1 of the following 3 conditions: (a) (i) Number of mature individuals in each subpopulation ≤ 50 ≤ 250 ≤ 1,000 (ii) % of mature individuals in one subpopulation = 90 – 100% 95 – 100% 100% (b) Extreme fluctuations in the number of mature individuals Evidence: The total population in natural and reintroduced subpopulations in 2010 was estimated to be 11 000 to 32 000. Since then it is likely that one of the original four subpopulations, at Tutanning Nature Reserve, no longer survives (N. Marlow, pers. comm., cited in Woinarski et al., 2014), and the Venus Bay peninsula population in South Australia has crashed to almost undetectable levels due to predation by feral cats and possible depletion of food resources within the fenced peninsula. The data presented above appear to be insufficient to demonstrate if the species is eligible for listing under this criterion. However, the purpose of this consultation document is to elicit additional information to better understand the species’ status. This conclusion should therefore be considered to be tentative at this stage, as it may be changed as a result of responses to this consultation process. Criterion 4. Number of mature individuals Critically Endangered Extremely low Endangered Very Low Vulnerable Low Number of mature individuals < 50 < 250 < 1,000 Evidence: The number of mature individuals in natural and reintroduced subpopulations in 2010 was estimated to be 11 000 to 32 000 (Woinarski et al., 2014). The data presented above appear to demonstrate the species is not eligible for listing under this criterion. However, the purpose of this consultation document is to elicit additional information to better understand the species’ status. This conclusion should therefore be considered to be tentative at this stage, as it may be changed as a result of responses to this consultation process.