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Changes in the floristic composition of cerrado sensu stricto in Brazil over a nine-year period

Published online by Cambridge University Press:  21 November 2000

Jeanine Maria Felfili
Affiliation:
Departamento de Engenharia Florestal, Universidade de Brasília, CP 04357, DF, Brazil, CEP 70 919 970
Alba Valéria Rezende
Affiliation:
Departamento de Engenharia Florestal, Universidade de Brasília, CP 04357, DF, Brazil, CEP 70 919 970
Manoel Cláudio Da Silva Júnior
Affiliation:
Departamento de Engenharia Florestal, Universidade de Brasília, CP 04357, DF, Brazil, CEP 70 919 970
Marco Aurélio Silva
Affiliation:
Departamento de Engenharia Florestal, Universidade de Brasília, CP 04357, DF, Brazil, CEP 70 919 970

Abstract

Changes in floristic composition and structure in a cerrado sensu stricto area were studied over a 9-y period. A sample of 19 (20-m × 50-m) permanent plots was assessed at 3-y intervals from 1985 to 1994, when all stems ≥ 5 cm at 0.30 m above the ground level were measured. There was little change in species composition over the period. Changes in density and basal area of the whole community were in the range of 5% over the 9 y. These parameters fluctuated over the years with the greatest differences found in the comparisons of 1991, 2 y after an accidental fire reached the site, with other years. The changes in density and basal area were greater than in several tropical forests, probably due to disturbances such as fire occurring at 3 to 5-y intervals. The nearly constant density and basal area suggested a highly resilient community.

Type
Research Article
Copyright
2000 Cambridge University Press

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