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Mycorrhiza

, Volume 8, Issue 1, pp 29–33 | Cite as

Root associations in Austrocedrus forests and seasonal dynamics of arbuscular mycorrhizas

  • S. Fontenla
  • R. Godoy
  • P. Rosso
  • M. Havrylenko
ORIGINAL PAPER

Abstract

 Despite the recognized importance of arbuscular mycorrhizal (AM) fungi in forest ecosystems, their is little information about their occurrence in natural forest ecosystems of Patagonia. This study investigated root associations in two Austrocedrus forests and the seasonal dynamics of AM of Austrocedrus chilensis. Most of the vascular flora in both forests had arbuscular mycorrhizae (80.5 and 70.5% of species, respectively). The dynamics of mycorrhiza formation and spore number did not differ between these forests but varied with the season. Root colonization was lowest in September at the end of the quarter with the most rain, and spore numbers were highest in September and in December at the beginning of the dry season.

Key words Austrocedrus chilensis Cypress Patagonia Spores Seasonality 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • S. Fontenla
    • 1
  • R. Godoy
    • 2
  • P. Rosso
    • 1
  • M. Havrylenko
    • 1
  1. 1.Centro Regional Universitario Bariloche, Universidad Nacional de Comahue, Quintral 1250 (CP 8400) S.C. de Bariloche, Rio Negro, Argentina Fax: +54-944-22111; e-mail: soniaf@uncmai.edu.arAR
  2. 2.Instituto de Bótanica, Universidad Austral de Chile, Casilla 567, Valdivia, ChileCL

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