Influences of soil environment and willow host species on ectomycorrhizal fungi communities was studied across an hydrologic gradient in temperate North America. Soil moisture, organic matter and pH strongly predicted changes in fungal community composition. In contrast, increased fungal richness strongly correlated with higher plant-available phosphorus. The 93 willow trees sampled for ectomycorrhizal fungi included seven willow species. Host identity did not influence fungal richness or community composition, nor was there strong evidence of willow host preference for fungal species. Network analysis suggests that these mutualist interaction networks are not significantly nested or modular. Across a strong environmental gradient, fungal abiotic niche determined the fungal species available to associate with host plants within a habitat.
Bibliographical noteFunding Information:
This work was supported by by funds from the University of Minnesota, Stanford University, and NSF Award DBI 1249341 [KGP] and NSF LTER Grant DEB number 0620652 [JCB].
© FEMS 2015. All rights reserved.
- Cedar Creek
- Host preference
- Mutualism network