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Authors

  • Ana Virgínia de Lima Leite Departamento de Botânica - Universidade Federal de Pernambuco
  • Laise de Holanda Cavalcanti Andrade Departamento de Botânica - Universidade Federal de Pernambuco

Abstract

The vegetation of sandy-coastal ecosystems is important to the fixing and maintenance of dunes in order to avoid the sand movement. In urban areas, however, the anthropic pressure may disrupt these ecosystems. In Recife, Brazil, we conducted a temporal analysis on changes of the dune vegetation related with the increasing anthropic pressure. Between November 1999 and May 2000, we sampled 6 km of the coastal plant community of Boa Viagem beach (8°06'02"S and 34°52'48"W) and compared the samples with those taken in a survey carried out by Andrade- Lima in 1951. We found 47 plant species, of which ten were halophytes, 34 were ruderals, and three were cultivated. Legurninosae and Poaceae were the richest families, and both consisted of nine species (19%). We found 18 species which were previously unknown, and ten species that no longer exist today. There are no significant differences in the species' richness and in the proportion of ruderal species between the two surveys. On the other hand, the species composition shows a significant difference. It is reasonable to suppose that the changes in floristic composition are probably a consequence of the anth-rcipic pressure, even though no significant changes were detected in the species' richness and the proportion of ruderal species.

Author Biographies

Ana Virgínia de Lima Leite, Departamento de Botânica - Universidade Federal de Pernambuco

Possui Graduação em Ciências Biológicas - Bacharelado e Licenciatura pela Universidade Federal de Pernambuco, Mestrado e Doutorado em Biologia Vegetal pela Universidade Federal de Pernambuco. É Professora Adjunto - nível I da Universidade Federal Rural de Pernambuco (Campus Dois Irmãos).

Mais informações no Currículo Lattes.

Laise de Holanda Cavalcanti Andrade, Departamento de Botânica - Universidade Federal de Pernambuco

Bacharel em História Natural e Licenciada em Ciências pela Universidade Federal de Pernambuco, com Especializaçaõ em Taxonomia Vegetal e Fitogeografia pela Universidade Federal Rural de Pernambuco, Mestrado e Doutorado em Ciências Biológicas - Botânica pela Universidade de São Paulo. Atualmente é Professor Titular em Botânica da Universidade Federal de Pernambuco.

Mais informações no Currículo Lattes.

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Published

2004-01-01

Issue

Vol. 17 No. 1 (2004)

Section

Artigos

License

Copyright (c) 2004 Ana Virgínia de Lima Leite, Laise de Holanda Cavalcanti Andrade

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