ALT Figure 2. (a) Illustration of soil quality assessed using the visual evaluation of soil structure (VESS) method for each contrasting soil layer observed in forests and pastures in the northwestern Colombian Amazon with means and standard errors (in parenthesis). (b) Overall VESS Sq scores for the total layer (0–25 cm) in forest and pasture areas of the Cartagena del Chairá (CTG), San Vicente del Caguán (SVC), and Solano (SLN) sites, and regional scale. The asterisk indicates that the mean values of the VESS scores differ significantly between themselves at ***p < 0.001 and ns: not significant according to the Student's t-test. Error bars denote standard error. The red dashed line indicates the critical threshold (Sq = 3.0).
ALT Figure 2. (a) Illustration of soil quality assessed using the visual evaluation of soil structure (VESS) method for each contrasting soil layer observed in forests and pastures in the northwestern Colombian Amazon with means and standard errors (in parenthesis). (b) Overall VESS Sq scores for the total layer (0–25 cm) in forest and pasture areas of the Cartagena del Chairá (CTG), San Vicente del Caguán (SVC), and Solano (SLN) sites, and regional scale. The asterisk indicates that the mean values of the VESS scores differ significantly between themselves at ***p < 0.001 and ns: not significant according to the Student's t-test. Error bars denote standard error. The red dashed line indicates the critical threshold (Sq = 3.0).