02168nab a2200241 i 4500003000900000005001700009008004100026040001800067072000800085100004700093100003800140100003900178100003700217100003700254245008200291500009300373520114100466650001301607650001301620650003001633773018201663856008101845BR-BrBNA20260402125303.0260402b2019    bl.qr|pooa||| 00| 0 eng |  aBR-BrBNAbeng  aK10  aMelo, Cybelle Laís Souto Maior Sales de   aFerreira, Rinaldo Luiz Caraciolo   aSilva, José Antônio Aleixo da   aMachuca, Miguel Ángel Herrera   aCespedes, German Hugo Gutierrez   aDynamics of dry tropical forest after three decades of vegetation suppression  aPublicação on-line; Bibliography p. 9-12 (52 ref.); 5 tables; 2 illus.; Summary (En)  a

ABSTRACT

The aim of this study was to analyze the dynamics of the community and shrub-woody individuals
in a dry forest in the Brazilian semiarid region after 29 years of vegetation suppression. Individuals
with a circumference at 1.30 m above the ground (CBH) ≥ 6 cm were counted and their heights and
CBH were measured in 40 permanent plots on three monitoring occasions (2011, 2013 and 2015).
In the period between 2011 and 2015 the area presented a below average precipitation for the last
30 years. Phytosociological parameters and diversity were estimated. The density of individuals
decreased from 2011 to 2015 (p < 0.01) and the basal area was similar. During the monitoring
period, Poincianella bracteosa stood out in density, frequency and dominance. Phytosociological
changes were more evident for an interval of four years. After 29 years of vegetation suppression,
the community diversity is within the values for preserved semiarid (caatinga) vegetation. A long
period of drought was the main disturbance factor affecting vegetation dynamics.

Keywords: caatinga, density, diversity, dominance, frequency, monitoring.  aCAATINGA  aFLORESTA  aDESENVOLVIMENTO FLORESTAL0 02929dRio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994o2025-0451tFloresta e Ambiente (Brazil)x1415-0980  /  ISSN 2179-8087 0nlinegv. 26(3) p. 1-12; (2019)wBR2026000263  uhttps://www.scielo.br/j/floram/a/DS4vHKqhmpP8SjrpGcgvsff/?format=pdf&lang=en