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Association of ectomycorrhizal mats with Pacific yew and other understory trees in coniferous forests

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Abstract

This study was designed to determine whether ectomycorrhizal mats (ECM) are more likely to be present in soils at the base of common understory trees than in soils distant from trees and to determine whether occurrence of ECM is related to tree size. Three understory trees were studied: Pacific yew (Taxus brevifolia Nutt.), western hemlock (Tsuga heterophylla (Raf.)Sarg), and vine maple (Acer circinatum Pursh). The 12 sites studied represent a range of climatic conditions and management histories. More than 2,900 plots were surveyed over 18 months. The incidence of ECM was higher at the base of all three species than in control plots. Incidence of mats was also positively correlated with tree size. Saplings consistently had a lower incidence of ECM than did larger trees.

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Authors and Affiliations

  1. Department of Forest Science, Forest Science Laboratory 020, Oregon State University, 97331-7501, Corvallis, OR, USA

    Robert P. Griffiths, Amy C. Chadwick, Merrilee Robatzek, Krista Schauer & Kimberly A. Schaffroth

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  1. Robert P. Griffiths
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  2. Amy C. Chadwick
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  3. Merrilee Robatzek
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  4. Krista Schauer
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  5. Kimberly A. Schaffroth
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Paper 3028 of the Forest Research Laboratory, Oregon State University, Corvallis

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Griffiths, R.P., Chadwick, A.C., Robatzek, M. et al. Association of ectomycorrhizal mats with Pacific yew and other understory trees in coniferous forests. Plant Soil 173, 343–347 (1995). https://doi.org/10.1007/BF00011473

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  • DOI: https://doi.org/10.1007/BF00011473

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