Only eight studies (36%) provided data on the volume of
timber exploited per hectare (m3 ha−1), with values ranging
from 5.1 to 18.5m3 ha−1 (Table 1 and Fig. 3). Two studies
informed the number of trees removed per hectare (Danielsen
and Heegaard, 1995; Peters et al., 2006). The period of exploitation
(years) since the first cut was provided for more than 50%
of the studies (Table 1 and Fig. 3). The size of the study area
(ha) was provided for 68% of the studies. Sixteen studies (72%)
informed data on bat abundance (Fig. 3).