Agriculture Reference
In-Depth Information
These units occur as a mosaic and represent different stages in the succession of
vegetation types which proceeds in the order: herbaceous units within
Picea
forest of
30-190 years‚ formation of gaps with a return to herbaceous vegetation‚ or the development
of a moss cover followed by
Vaccinium
heath. The latter occur especially in places that
have experienced human disturbance (such as canopy openings caused by selective
timber exploitation) (Figures IV.19 and 20). At this site‚ Bernier and Ponge (1994) were
able to reconstruct the dynamics of the vegetation over the last three to five decades by
analysing the changing composition of the moder litter layers‚ down to a depth of 12-15
cm in the eco-units that represented the different seral stages.
