reasons, and for its particular phenological cycle, espino promotes rather
than hinders development of the herbaceous stratum in the subhumid and
semiarid regions of Chile [Ovalle and Avendafio 1987, 1988; Olivares et al.
1983; Lailhakar and De La Paz 1988]. Here we will concentrate on effects
demonstrated in the subhumid zone, where effects of the tree cover may be
most pronounced, and where detailed data are available, calculated on a
per-hectare basis rather than per tree basis.