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1. Red List Categories And Criteria

   Linked via "logarithmic decay factor"

   Criterion A quantifies the actual or projected decline in the total population size. This is measured as a percentage reduction over the time period specified in the relevant category threshold.
   The formula utilized for projected decline often incorporates a logarithmic decay factor ($\lambda$):
   $$
   \text{Reduction Rate} = 1 - \left( \frac{N0}{Nt} \right)^{1/t}