Data/hora: 09/06/2024 02:24:37

Provedor de dados: | 190
País: | Brazil

Título:

Comparative study of phytosociological structure of two fragments of Caatinga in different levels of conservation

Estudo comparativo da estrutura fitossociológica de dois fragmentos de Caatinga em níveis diferentes de conservação

Autores: | Calixto Júnior, João Tavares; Drumond, Marcos Antônio.
Data: | 2014-12-26
Ano: | 2014
Palavras-chave: | Thorny deciduous vegetation; Phytosociology; Ecological sucession Engenharia Florestal  Recursos Floretais  Fitossociologia Vegetação caducifólia espinhosa; Fitossociologia; Sucessão ecológica.
Resumo: | The objective of this work was the comparison of vegetation structure of two Caatinga fragments with primary and secondary levels of ecological succession, located at Embrapa Semiarido, Petrolina, State of Pernambuco, Brazil. For floristic survey it was used the method of plots, where 10 sampling units of 8 m x 40 m randomly distributed were plotted. All living individuals with diameter at ground level (DGL) ≥ 3 cm were inventoried and also measured their total heights. We observed significant differences in the diametric structure, but the distribution of hypsometric frequency showed that the majority of individuals in both areas were small-sized (&lt; 5 m). Through similarity analysis and principal coordinates, we observed the formation of three distinct groups when compared to other surveys in Caatinga sensu stricto. The results showed that the studied areas have floristic richness compatible with Caatinga environments, the fragments are in early stages (Area I) and intermediate succession (Area II) and 30 years of regeneration were not enough for area I to achieve a level of development similar to the ecologically better conserved area.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português

Identificador:

http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/670

10.4336/2014.pfb.34.80.670

Editor: | Embrapa Florestas
Relação: | http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/670/384
Formato: | application/pdf

Fonte:

Brazilian Journal of Forestry Research; v. 34, n. 80 (2014): out./dez.; 345-355

Pesquisa Florestal Brasileira; v. 34, n. 80 (2014): out./dez.; 345-355

1983-2605

1809-3647

Fonte:

Direitos autorais 2015 Pesquisa Florestal Brasileira

http://creativecommons.org/licenses/by-nc-nd/4.0