RuelPineau2002

Référence

Ruel, J.-C. and Pineau, M. (2002) Windthrow as an important process for white spruce regeneration. Forestry Chronicle, 78(5):732-738.

Résumé

White spruce (Picea glauca (Moench.) Voss.) is frequently found in association with balsam fir (Abies balsamea (L.) Mill.) in virgin stands. However, its regeneration is less aggressive than that of balsam fir. The persistance of white spruce in the canopy might be explained by differential mortality and windthrow. Windthrow could play an important role in creating favourable seedbeds and providing increased light. This paper examines the contribution of windthrow for white spruce regeneration in balsam fir-dominated forests. Experimental windthrows were created and regeneration establishment monitored for three seasons. Windthrow greatly modified the availability of seedbeds and enhanced white spruce establishment. Older natural windthrows were sampled to conclude that this effect was still evident more than five years after windthrow occured. We also noticed that white spruce benefited more from the disturbance than did balsam fir. Finally, sampling conducted in mature stands showed that mature white spruce stems were more abundant on the mounds created by old uprootings, indicating that this effect is maintained in the long term. Even though balsam fir also benefited from windthrow, the benefit was proportionally greater for white spruce.

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@ARTICLE { RuelPineau2002,
    AUTHOR = { Ruel, J.-C. and Pineau, M. },
    TITLE = { Windthrow as an important process for white spruce regeneration },
    JOURNAL = { Forestry Chronicle },
    YEAR = { 2002 },
    VOLUME = { 78 },
    PAGES = { 732-738 },
    NUMBER = { 5 },
    NOTE = { Times Cited: 1 },
    ABSTRACT = { White spruce (Picea glauca (Moench.) Voss.) is frequently found in association with balsam fir (Abies balsamea (L.) Mill.) in virgin stands. However, its regeneration is less aggressive than that of balsam fir. The persistance of white spruce in the canopy might be explained by differential mortality and windthrow. Windthrow could play an important role in creating favourable seedbeds and providing increased light. This paper examines the contribution of windthrow for white spruce regeneration in balsam fir-dominated forests. Experimental windthrows were created and regeneration establishment monitored for three seasons. Windthrow greatly modified the availability of seedbeds and enhanced white spruce establishment. Older natural windthrows were sampled to conclude that this effect was still evident more than five years after windthrow occured. We also noticed that white spruce benefited more from the disturbance than did balsam fir. Finally, sampling conducted in mature stands showed that mature white spruce stems were more abundant on the mounds created by old uprootings, indicating that this effect is maintained in the long term. Even though balsam fir also benefited from windthrow, the benefit was proportionally greater for white spruce. },
    KEYWORDS = { Picea glauca; Abies balsamea; windthrow; microtopography; regeneration BALSAM FIR; BOREAL FOREST; QUEBEC; MICROSITE; STANDS; GROWTH; ESTABLISHMENT; GERMINATION; DISTURBANCE; ONTARIO },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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