N. obliqua was the species with the lowest survival rate in the
three study conditions, which may be explained by its ecological
requirements. It is a shade-intolerant species and, therefore, would
be unsuccessful under the canopy. On the intermediate matrix,
where solar radiation is direct, N. obliqua survives only through the
first three months. This species requires rainfalls around 1,500mm;
but in the study area it is common to have dry years with less than
1100mm of rain (Donoso, 2008). Furthermore, N. obliqua do not
resist more than a month of drought (Donoso, 2008), which may
limit its ability to compete with non-native trees or other more
drought-resistance native trees.
stands.