A comparison of the wood anatomy of 11 species from two cerrado habitats (cerrado s.s. and adjacent gallery forest)

Authors

  • Julia O. Sonsin,

    Corresponding author
    • Departamento de Recursos Naturais, FCA, PG Ciência Florestal, UNESP – Universidade Estadual Paulista, Fazenda Experimental Lageado – Rua José Barbosa de Barros, Botucatu, SP, Brazil
    Search for more papers by this author
  • Peter E. Gasson FLS,

    1. Jodrell Laboratory, Royal Botanic Gardens, Surrey, UK
    Search for more papers by this author
  • Claudia F. Barros,

    1. Instituto de Pesquisas do Jardim Botânico do Rio de Janeiro, Rua Jardim Botânico, Rio de Janeiro, Brazil
    Search for more papers by this author
  • Carmen R. Marcati

    1. Departamento de Recursos Naturais, FCA, UNESP – Universidade Estadual Paulista, Fazenda Experimental Lageado, Rua José Barbosa de Barros, Botucatu, SP, Brazil
    Search for more papers by this author

Corresponding author. E-mail: jsonsin@yahoo.com.br

Abstract

A comparative study of the secondary xylem (wood) anatomy of 11 species (38 specimens) occurring in cerrado s.s. and the adjacent gallery forest (both cerrado s.l. habitat) was made with the aim of identifying the anatomical characteristics of ecological value and correlating them with the environmental conditions. The anatomical features that vary, in general, between the two habitats are: growth ring distinctness (well or poorly defined); tyloses and deposits (more abundant in cerrado specimens); gelatinous fibres (more evident in cerrado specimens and in different patterns between habitats); variation in paratracheal and banded parenchyma (more abundant in cerrado); and more cells per parenchyma strand in cerrado. In general, gallery forest specimens have wider vessels, fewer vessels per square millimetre and larger intervessel pits, indicating more efficient water conduction, whereas cerrado s.s. specimens are the opposite, with low vulnerability and mesomorphy indices, demonstrating greater safety under conditions of water stress. © 2012 The Linnean Society of London, Botanical Journal of the Linnean Society, 2012, ••, ••–••.

Ancillary