Conducted in a riparian area of the protected area called Capуo Bonito National Forest – SP state, this study assessed
at different distance classes from
Pinus elliottii
var. elliottii (pine) plantation: 1) the density of native vegetation, pine
with-cone and pine without-cone; 2) the basal area of native vegetation and pine with-cone and 3) the humidity by
frequency of occurrence of dry soil, saturated soil surface and flooded soil. The objective was to verify the situation
of invasion and development of pine, its relationship with native vegetation and soil. By Spearman Correlation
Coefficient, it was demonstrated that there was no difference in the pine establishment in different distances (average
= 335), confirming its invasive potential. When the increase in native vegetation density is observed, there is a
decrease in the pine with-cone abundance, however, its establishment occurred. In addition, there was recruitment of
seedlings and juveniles (pine without-cone) which have the capacity for self-perpetuation by substitution for senile
and perished individuals. When considering the same pine with-cone density and native vegetation, it was obtained
basal area of pine with-cone eight times more than the native vegetation; this high basal area indicates competition
for environmental attributes which may compromise maintenance and survival of native species in the medium and
long term. There was a higher prevalence of pine with-cone occupation in dry soil in detriment of native species. The
environmental impacts resulted by the presence, development and invasion of
Pinus elliottii indicate the need for its
eradication and management against reinfestation.
