SiroisPayette1989

Référence

Sirois, L., Payette, S. (1989) Postfire black spruce establishment in subarctic and boreal Quebec. Canadian Journal of Forest Research, 19(12):1571-1580. (Scopus )

Résumé

Forest regeneration in areas burned during the 1950s was studied along topographic and climatic gradients, from the northern Boreal Forest to the northern Forest-Tundra. Regenerated plant communities are mostly dominated by Cladina mitis in well-drained uplands and by hygrophilous shrub species in moister lowlands. Postfire Picea mariana establishment was active during the first 20 yr of vegetation recovery, then it decreased rapidly. Along the topographical gradient, postfire regeneration was more rapid in hill sites, whereas spruce recruitment was more abundant in lowland sites. Along a northward latitudinal gradient, prefire populations showed an increasing trend in age range, mean age, and mean age of youngest individuals. This gradient coincided also with an increasing fire rotation period from S to N. The proportion of stunted individuals in postfire populations was often more important than in prefire populations on the same sites, suggesting more rigorous growth conditions associated with forest removal. Because most black spruce seedling establishment is occurring during a short period in this area, stand density is probably determined by regeneration conditions, including seed input and seedbed quality, soon after the fire. -from Authors

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@ARTICLE { SiroisPayette1989,
    AUTHOR = { Sirois, L. and Payette, S. },
    TITLE = { Postfire black spruce establishment in subarctic and boreal Quebec },
    JOURNAL = { Canadian Journal of Forest Research },
    YEAR = { 1989 },
    VOLUME = { 19 },
    PAGES = { 1571-1580 },
    NUMBER = { 12 },
    ABSTRACT = { Forest regeneration in areas burned during the 1950s was studied along topographic and climatic gradients, from the northern Boreal Forest to the northern Forest-Tundra. Regenerated plant communities are mostly dominated by Cladina mitis in well-drained uplands and by hygrophilous shrub species in moister lowlands. Postfire Picea mariana establishment was active during the first 20 yr of vegetation recovery, then it decreased rapidly. Along the topographical gradient, postfire regeneration was more rapid in hill sites, whereas spruce recruitment was more abundant in lowland sites. Along a northward latitudinal gradient, prefire populations showed an increasing trend in age range, mean age, and mean age of youngest individuals. This gradient coincided also with an increasing fire rotation period from S to N. The proportion of stunted individuals in postfire populations was often more important than in prefire populations on the same sites, suggesting more rigorous growth conditions associated with forest removal. Because most black spruce seedling establishment is occurring during a short period in this area, stand density is probably determined by regeneration conditions, including seed input and seedbed quality, soon after the fire. -from Authors },
    COMMENT = { Cited By (since 1996): 20 Export Date: 10 February 2010 Source: Scopus },
    ISSN = { 00455067 (ISSN) },
    KEYWORDS = { black spruce, fire, spruce, Canada, Quebec, Cladina mitis, Cladonia, Picea, Picea mariana },
    OWNER = { Luc },
    TIMESTAMP = { 2010.02.10 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-0024924116&partnerID=40&md5=7f85410394ac9111e177f65254f2f3b6 },
}

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