FentonLecomteLegareEtAl2005

Reference

Fenton, N.J., Lecomte, N., Legare, S., Bergeron, Y. (2005) Paludification in black spruce (Picea mariana) forests of easternCanada: Potential factors and management implications. Forest Ecology and Management, 213(1-3):151-159.

Abstract

Over time boreal black spruce forests on fine-textured soils in westernQuebec, Canada develop very thick forest floors composed of poorlydecomposed litter created by the tree and understory layers. Thesepaludified soils are typically waterlogged and cold, and in thisfire-mediated landscape, are at least partially consumed by standreplacing fires, which facilitates the establishment of the nextgeneration of trees. Within a context of ecosystem-based management,forest harvest should mimic the dual effects of high severity fireon tree and forest floor biomass. This study was designed to investigatepotential factors of forest floor thickness in order to determinethe impact of removing only a tree layer, and to suggest strategiesto limit paludification in this important forestry region. Forestfloor thickness, fire severity, basal area, canopy closure, coverof Sphagnum spp. and ericaceous spp. were measured in black sprucestands across a chronosequence from 50 to 350 years after fire.Fire severity was determined to be a key factor in determining forestfloor thickness by path analysis. After high severity fires forestfloor thickness was primarily dependant on stand age, but was alsopositively influenced by Sphagnum spp. cover and negatively influencedby the presence of trembling aspen (Populus tremuloides). Theseresults suggest that forest interventions that do no remove theorganic layer may be mimicking low severity fires and promotingpoor tree growth and regeneration. Forest floor thickness may belimited by avoiding interventions that open the canopy and may promotethe presence of Sphagnum spp. and ericaceous spp., and or by practicingmixed silviculture of trembling aspen and black spruce. However,a balance needs to be maintained between the application of thesetechniques and the preservation of paludified forests in the landscape.© 2005 Elsevier B.V. All rights reserved.

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@ARTICLE { FentonLecomteLegareEtAl2005,
    AUTHOR = { Fenton, N.J. and Lecomte, N. and Legare, S. and Bergeron, Y. },
    TITLE = { Paludification in black spruce (Picea mariana) forests of easternCanada: Potential factors and management implications },
    JOURNAL = { Forest Ecology and Management },
    YEAR = { 2005 },
    VOLUME = { 213 },
    PAGES = { 151-159 },
    NUMBER = { 1-3 },
    ABSTRACT = { Over time boreal black spruce forests on fine-textured soils in westernQuebec, Canada develop very thick forest floors composed of poorlydecomposed litter created by the tree and understory layers. Thesepaludified soils are typically waterlogged and cold, and in thisfire-mediated landscape, are at least partially consumed by standreplacing fires, which facilitates the establishment of the nextgeneration of trees. Within a context of ecosystem-based management,forest harvest should mimic the dual effects of high severity fireon tree and forest floor biomass. This study was designed to investigatepotential factors of forest floor thickness in order to determinethe impact of removing only a tree layer, and to suggest strategiesto limit paludification in this important forestry region. Forestfloor thickness, fire severity, basal area, canopy closure, coverof Sphagnum spp. and ericaceous spp. were measured in black sprucestands across a chronosequence from 50 to 350 years after fire.Fire severity was determined to be a key factor in determining forestfloor thickness by path analysis. After high severity fires forestfloor thickness was primarily dependant on stand age, but was alsopositively influenced by Sphagnum spp. cover and negatively influencedby the presence of trembling aspen (Populus tremuloides). Theseresults suggest that forest interventions that do no remove theorganic layer may be mimicking low severity fires and promotingpoor tree growth and regeneration. Forest floor thickness may belimited by avoiding interventions that open the canopy and may promotethe presence of Sphagnum spp. and ericaceous spp., and or by practicingmixed silviculture of trembling aspen and black spruce. However,a balance needs to be maintained between the application of thesetechniques and the preservation of paludified forests in the landscape.© 2005 Elsevier B.V. All rights reserved. },
    KEYWORDS = { Boreal Ericaceous Fire severity Forest floor Paludification SphagnumBiomass Decomposition Ecosystems Soils Vegetation Black spruce forestsForest floors Waterlogging Forestry fire forest floor forest managementorganic matter paludification silviculture Biomass Canada DecayFires Forestry Picea Canada North America Quebec [Canada] WesternHemisphere World Picea mariana Populus tremuloides Sphagnum },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.04 },
}

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