The presence of forest within urban centers has great importance, especially in relation to ecosystem services provided
by them. Urban forests are poorly studied. Moreover, quantitative studies focused on tree flora of the present study
area remain to be established. Here, we evaluated the composition, structure and diversity of species in regeneration
from an urban forest, originating from a landscaping design. We sought to answer the following question: Did the
forest advance in the succession process after 150 years of regeneration? The survey was done on 25 plots of 5 x 5
m, where all the individuals with diameter at breast height (DBH) < 5 cm and height > 1 m were sampled. We found
1297 individuals, distributed in 84 species. Three alien species with potential invasive acquaintance were found:
Coffea arabica
,
Artocarpus heterophyllus
and
Persea americana
.
Coffea arabica showed the highest importance
value in the community. Shannon diversity index was H= 3,10 nats.ind
-1, and Pielou equability J = 0.70. The
cluster analysis (Morisita-Horn coefficient) showed a community with low internal heterogeneity. The analysis of
ecological groups revealed a community with predominantly early successional groups. Despite of 150 years of
natural regeneration, our findings indicated a community with difficulties in advancing to higher successional stages.
This study is important to highlight the risk of invasive alien species in landscaping designs.