.

Authors

  • Rodrigo Agra Balbueno Departamento de Ecologia - PPP Ecologia/UFRGS
  • Paulo Luiz de Oliveira Departamento de Ecologia - PPP Ecologia/UFRGS

Abstract

The effect of forest fragmentation was studied through the analysis of arboreal vegetation in two native forest fragments contigous to Eucalyptus reforestation areas in Baixo Jacuí region, Rio Grande do Sul State, South Brazil: Horto São Pedro I (5.19 ha; municipal district of São Jerônimo) and Horto Santa Rosa (5.75 ha; municipal district of Arroio dos Ratos). The arboreal vegetation was studied by determining the value of importance using twelve 10 x 20 m juxtaposed plots in each fragment. All individuals with diameter of stem at breast height (DBH) equal or less cm were sampled and identified. The index of diversity of Shannon (H') and the indices of similarity of Jaccard and Sorensen were calculated. In the Horto São Pedro I fragment, 230 individuals of 24 species and 19 families were identified. The index of diversity of Shannon was 2.23 nats. In the Horto Santa Rosa fragment, 186 individuals of 32 species and 20 families were identified. The index of diversity of Shannon was 2.88 nats. In the Horto Santa Rosa fragment, 186 individuals of 32 species and 20 families were identified. The index of diversity of Shannon was 2.88 nats. The floristic similarity determined by the indices of Jaccard and Sorensen was 0.19 and 0.24, respectively, with nine species common to both fragments.

Author Biographies

Rodrigo Agra Balbueno, Departamento de Ecologia - PPP Ecologia/UFRGS

Possui Graduação em Ciências Biológicas pela Universidade Federal do Rio Grande do Sul e Mestrado em Ecologia pela Universidade Federal do Rio Grande do Sul. Atualmente é consultor e sócio-cotista da Biolaw Consultoria Ambiental Ltda.

Mais informações no Currículo Lattes.

Paulo Luiz de Oliveira, Departamento de Ecologia - PPP Ecologia/UFRGS

Possui Graduação em História Natural pela Universidade Federal do Rio Grande do Sul, Mestrado em Programa de Pós-Graduação Em Botânica pela Universidade Federal do Rio Grande do Sul e Doutorado em Ciências Agrárias - ênfase em Ecologia Vegetal - Universität Hohenheim, Alemanha. Atualmente é professor colaborador do Departamento de Ecologia da Universidade Federal do Rio Grande do Sul.

Mais informações no Currículo Lattes.

Downloads

Published

2000-01-01

Issue

Vol. 13 No. 2 (2000)

Section

Artigos

License

Copyright (c) 2000 Rodrigo Agra Balbueno, Paulo Luiz de Oliveira

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

After the electronic publication of the manuscript, the authors are entitled, without any restriction, on its contents.

License Creative Commons Atribuição 4.0 Internacional - CC BY

 Licença Creative Commons

Authors are able to take on additional contracts separately, non-exclusive distribution of the version of the paper published in this journal (ex.: publish in institutional repository or as a book), with an acknowledgment of its initial publication in this journal.