LeSirois2004

Référence

Le Goff, H. and Sirois, L. (2004) Black spruce and jack pine dynamics simulated under varying fire cycles in the northern boreal forest of Quebec, Canada. Canadian Journal of Forest Research, 34(12):2399-2409. (Scopus )

Résumé

The postfire regeneration dynamics of black spruce and jack pine were documented by a study of three successive cohorts (woody debris, snags, seedlings) within a large area burnt in 1989. The objectives of this study were (i) to describe how fire interval can influence the abundance of regenerating black spruce and jack pine and (ii) to model the future abundance trends of these two species for fire cycles of different lengths. The transition probabilities after fire were calculated for mixed stands of black spruce and jack pine for fire intervals of 47 and 67 years in well-drained sites and for fire intervals varying between 92 and 270 years in poorly drained sites. These probabilities were incorporated into a model of regeneration dynamics that took into account the drainage type, the regeneration potential, and the natural mortality rate of both species. After the 1989 fire, jack pine seedlings made up 55%-82% of the regeneration in well-drained sites and 11%-40% in poorly drained sites. Model simulations show that fire intervals <60 years lead to the local extinction of black spruce, and those >220 years lead to that of jack pine. The simulation results also suggest that jack pine could expand its populations under a fire cycle of 50 years or after short fire intervals during longer fire cycles. Thus, in the short term and medium term (i.e., ca. <100 years), the length of the interval between two consecutive fires is a better predictor of the abundance, extinction, or local expansion of black spruce and jack pine than the fire cycle. © 2004 NRC Canada.

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@ARTICLE { LeSirois2004,
    AUTHOR = { Le Goff, H. and Sirois, L. },
    TITLE = { Black spruce and jack pine dynamics simulated under varying fire cycles in the northern boreal forest of Quebec, Canada },
    JOURNAL = { Canadian Journal of Forest Research },
    YEAR = { 2004 },
    VOLUME = { 34 },
    PAGES = { 2399-2409 },
    NUMBER = { 12 },
    ABSTRACT = { The postfire regeneration dynamics of black spruce and jack pine were documented by a study of three successive cohorts (woody debris, snags, seedlings) within a large area burnt in 1989. The objectives of this study were (i) to describe how fire interval can influence the abundance of regenerating black spruce and jack pine and (ii) to model the future abundance trends of these two species for fire cycles of different lengths. The transition probabilities after fire were calculated for mixed stands of black spruce and jack pine for fire intervals of 47 and 67 years in well-drained sites and for fire intervals varying between 92 and 270 years in poorly drained sites. These probabilities were incorporated into a model of regeneration dynamics that took into account the drainage type, the regeneration potential, and the natural mortality rate of both species. After the 1989 fire, jack pine seedlings made up 55%-82% of the regeneration in well-drained sites and 11%-40% in poorly drained sites. Model simulations show that fire intervals <60 years lead to the local extinction of black spruce, and those >220 years lead to that of jack pine. The simulation results also suggest that jack pine could expand its populations under a fire cycle of 50 years or after short fire intervals during longer fire cycles. Thus, in the short term and medium term (i.e., ca. <100 years), the length of the interval between two consecutive fires is a better predictor of the abundance, extinction, or local expansion of black spruce and jack pine than the fire cycle. © 2004 NRC Canada. },
    COMMENT = { Cited By (since 1996): 6 Export Date: 10 February 2010 Source: Scopus CODEN: CJFRA doi: 10.1139/X04-121 },
    ISSN = { 00455067 (ISSN) },
    KEYWORDS = { Computer simulation, Drainage, Fire protection, Mathematical models, Probability, Wood, Fire cycle, Post fire regeneration, Regeneration dynamics, Woody debris, Forestry, community composition, fire, fire history, local extinction, regeneration, relative abundance, Drainage, Forest Fires, Mathematical Analysis, Picea, Pinus Banksiana, Probability, Simulation, Wood, Canada, North America, Quebec [Canada], Western Hemisphere, World, Picea mariana, Pinus banksiana },
    OWNER = { Luc },
    TIMESTAMP = { 2010.02.10 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-15944401734&partnerID=40&md5=764aa352de7d21c2c458578b401a3d9a },
}

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