After-fire Variations in Floristic Composition at the Cerrado (Brazilian Savannah) Phytophysiognomies in Curvelo, Minas Gerais, Brazil
Tipo de material:
ArtigoAssunto(s): Recursos online:
Em: Floresta e Ambiente (Brazil) v. 27(3) p. 1-9; (2020)Sumário:
Abstract
This study aimed to evaluate the changes in the floristic composition at the Cerrado (Brazilian Savannah) stricto
sensu and Cerradão (xeromorphic forest) phytophysiognomies. In the first inventory in 2010, 15 soil plots of 20 × 50 m
in the Cerrado stricto sensu (CSS) and 10 soil sample plots of 20 × 50 m in the Cerradão (CD) were separated, and
individual samples with diameter at soil height ≥ 5 cm were measured. The second inventory, conducted in 2015,
used the same criteria. A fire hit both phytophysiognomies after the first inventory. Species loss and a mortality rate
higher than recruitment rate were observed in both phytophysiognomies. Species richness and individual density
have been diversified over time. Floristic changes were more intense in CD, with significant alterations between
mortality and recruitment rates – the species that disappeared were represented by a few individuals; in the CSS,
the changes were not significant.
Keywords: conservation, disturbances, diversity dynamics.
| Tipo de material | Biblioteca atual | Coleção | Número de chamada | Informaçaõ do volume | Situação | Devolução em | Código de barras |
|---|---|---|---|---|---|---|---|
Periódicos
|
Biblioteca Nacional de Agricultura - Binagri Agrobase - Periódicos | Periódicos agrícolas | 2020 27(3) | Online | 2025-0457 |
Publicação on-line; 36 ref.; 2 tables; Summary (En)
Abstract
This study aimed to evaluate the changes in the floristic composition at the Cerrado (Brazilian Savannah) stricto
sensu and Cerradão (xeromorphic forest) phytophysiognomies. In the first inventory in 2010, 15 soil plots of 20 × 50 m
in the Cerrado stricto sensu (CSS) and 10 soil sample plots of 20 × 50 m in the Cerradão (CD) were separated, and
individual samples with diameter at soil height ≥ 5 cm were measured. The second inventory, conducted in 2015,
used the same criteria. A fire hit both phytophysiognomies after the first inventory. Species loss and a mortality rate
higher than recruitment rate were observed in both phytophysiognomies. Species richness and individual density
have been diversified over time. Floristic changes were more intense in CD, with significant alterations between
mortality and recruitment rates – the species that disappeared were represented by a few individuals; in the CSS,
the changes were not significant.
Keywords: conservation, disturbances, diversity dynamics.
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