, Volume 17, Issue 5, pp 355–373 | Cite as

Ectomycorrhizal fungi associated with ponderosa pine and Douglas-fir: a comparison of species richness in native western North American forests and Patagonian plantations from Argentina

  • C. Barroetaveña
  • E. Cázares
  • M. Rajchenberg


The putative ectomycorrhizal fungal species registered from sporocarps associated with ponderosa pine and Douglas-fir forests in their natural range distribution (i.e., western Canada, USA, and Mexico) and from plantations in south Argentina and other parts of the world are listed. One hundred and fifty seven taxa are reported for native ponderosa pine forests and 514 taxa for native Douglas-fir forests based on available literature and databases. A small group of genera comprises a high proportion of the species richness for native Douglas-fir (i.e., Cortinarius, Inocybe, and Russula), whereas in native ponderosa pine, the species richness is more evenly distributed among several genera. The comparison between ectomycorrhizal species richness associated with both trees in native forests and in Patagonia (Argentina) shows far fewer species in the latter, with 18 taxa for the ponderosa pine and 15 for the Douglas-fir. Epigeous species richness is clearly dominant in native Douglas-fir, whereas a more balanced relation epigeous/hypogeous richness is observed for native ponderosa pine; a similar trend was observed for Patagonian plantations. Most fungi in Patagonian Douglas-fir plantations have not been recorded in plantations elsewhere, except Suillus lakei and Thelephora terrestris, and only 56% of the fungal taxa recorded in Douglas-fir plantations around the world are known from native forests, the other taxa being new associations for this host, suggesting that new tree + ectomycorrhizal fungal taxa associations are favored in artificial situations as plantations.


Ectomycorrhizas Exotic plantations Fungal species richness Pinus ponderosa Pseudotsuga menziesii 



Funding of this research by Programa Forestal de Desarrollo (SAGPyA 13/97) and by Agencia Nacional de Promoción Científica y Tecnológica (PICT 8647/00) is warmly acknowledged. We thank Dr. Jack States who provided unpublished information and Dr. James Trappe for his exhaustive revision of the manuscript. CB and MR are Researchers of Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET, Argentina).


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Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  1. 1.Centro de Investigación Forestal CIEFAPEsquelArgentina
  2. 2.Department of Forest ScienceOregon State UniversityCorvallisUSA

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