期刊
CANADIAN JOURNAL OF FOREST RESEARCH
卷 39, 期 11, 页码 2168-2179出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/X09-127
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类别
资金
- Fonds quebecois de la recherche sur la nature et les technologies
- Sustainable Forest Management Network
- Groupe de recherche en ecologie forestiere interuniversitaire
- Universite du Quebec a Montreal (UQAM)
- Natural Sciences and Engineering Research Council UQAM-Universite du Quebec en Abitibi-Temiscamingue
- Natural Sciences and Engineering Research Council
Alectorioid lichens are the dominant group of epiphytic lichens in boreal forests. Epiphytic lichen richness and abundance generally increase with stand age and within-stand heterogeneity. The objective of this study was to evaluate the importance of time elapsed since the last fire, stand structure, tree size, tree age, and branch height for epiphytic lichen biomass of the boreal forest of western Quebec. We sampled 12 sites belonging to four forest age classes (from 50 to >200 years). We assessed epiphytic lichen biomass of three species groups (Bryoria, Evernia, and Usnea) on 12 trees in each site. Our results showed that biomass of Bryoria and Usnea was higher in intermediate stages (between 101 and 200 years) compared with younger (50-100 years) and older (>200 years) stages. Biomass of the three species groups was greater on larger diameter trees (>16 cm) compared with smaller ones (<16 cm). These results indicate that the protection of postfire stands aged between 101 and 200 year should be prioritized to maintain the functional role of epiphytic lichens in managed landscapes.
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