In boreal forest ecosystems the trees are predominantly ectomycorrhizal, whereas in temperate forest ecosystems many deciduous trees are colonised by arbuscular mycorrhizas.
(the trees; are predominantly; ectomycorrhizal; L:In boreal forest ecosystems) (many deciduous trees; are colonised; by arbuscular mycorrhizas)
the trees many deciduous trees
are predominantly are colonised
ectomycorrhizal L:In boreal forest ecosystems
by arbuscular mycorrhizas