Previously in 2004, Sánchez-Gallen (unpub. data) carried out a
structural analysis of the fragments canopy, by randomly locating
seven 100 2 m transects placed in the centre of each fragment;
all P0.08 m girth individuals (0.025 m d.b.h.) were considered.
The structural analysis showed that most of the canopy trees with
the highest importance value index (IVI) were shade-tolerant species
(e.g., Trophis mexicana (Liebm.) Bureau, and Pseudolmedia oxyphyllaria
Donn.Sm.),