Table 5 Coefficients of key life history parameters, relative to mean time to extinction, using Generalised Additive Models (all parameters were significant p < 0.001).

From: Life history and dynamics of a platypus (Ornithorhynchus anatinus) population: four decades of mark-recapture surveys

Variable

Demographic category

edfa

rdfb

Fc

Dispersal

Likelihood of successful dispersal

1.446

1.693

44.27

Mortality

Female juvenile

1.588

1.83

11.41

 

Mortality of female adult

1.916

1.993

133.64

 

Mortality of male juvenile

1.78

1.951

15.04

 

Mortality of male sub-adult

1.942

1.996

34.38

 

Mortality of male adult

1.836

1.973

14.76

  1. Mean time to extinction was estimated using population viability analyses (Vortex software, Lacy 1993). See Fig. 3a–f for predicted response curves.
  2. aestimated degrees of freedom.
  3. breference degrees of freedom.
  4. cF-statistic49.
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