TABLE 2. Species-specific allometric exponents with 95% confidence interval, their test statistics, and the back-correction factor CF for the relationship between crown area and total sapwood area of six main shrub encroacher species in a semiarid savanna of Namibia. CF is needed for prediction of total sapwood area from SAtot applying back-transformation of the allometric relationship at ln-scale (see Eq 5 and Fig 5).