Canadian Forest Service Publications
Effects of lichen, Sphagnum spp. and feather moss leachates on jack pine and black spruce seedling growth. 2020. Pacé, N.; Paré, D.; Fenton, N.J.; Bergeron, Y. Plant Soil 452:441-455.
Issued by: Laurentian Forestry Centre
Catalog ID: 40160
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Aim The main objective of this study was to evaluate the influence of leachates from three typical boreal forest ground layers on young tree growth and to explore the linkages between the chemical composition of the leachates, tree growth, the allocation between belowground and aboveground parts, and ectomycorrhizal colonization. Methods An original 6-month greenhouse experiment was set up to investigate (i) the effects of lichen (Cladonia spp.) and feather moss (Pleurozium schreberii [Brid.] Mitt.) leachates on jack pine (Pinus banksiana Lamb.) growth and (ii) the effects of feather moss and Sphagnum spp. leachates on black spruce (Picea mariana [Mill.] B.S.P.) growth. Results Belowground growth and root allocation was reduced by lichen leachates in 2-year-old pine seedlings, while the impact was significant on both below- and aboveground growth in 6-month-old pine seedlings. A substance having the same migration time as usnic acid was detected in the lichen leachates by highperformance liquid chromatography. Sphagnum spp.