Regeneration of Douglas-fir is often poor in the interior Dry-belt. This may be due to poor nutrient and water uptake, processes that are heavily influenced by ectomycorrhizae. The aim of this continuing project is to investigate the role of ectomycorrhizae in Douglas-fir regeneration by examining (i) silvicultural practices that influence how rapidly Douglas-fir becomes colonized in the field, (ii) how ectomycorrhizae influence belowground interactions with neighbouring trees, and (iii) whether colonization by different ectomycorrhizal fungi increase the ability of Douglas-fir to regenerate sites with low soil water availability. Because many ectomycorrhizal fungi colonize regenerating seedlings from mycelium already connected to other trees, the importance and function of these mycelial networks is a major focus of this project. This work is being carried out by several UBC/OUC professors and their graduate students.
Suzanne W. Simard.
Forest Investment Account (FIA). 2004. Ectomycorrhizae and networks: their role in facilitating Douglas-fir regeneration under water, site, and climatic stresses. Forest Investment Account (FIA) - Forest Science Program. Forest Investment Account Report. FIA2004MR249