AsselinFortinBergeron2001

Référence

Asselin, H., Fortin, M.-J., Bergeron, Y. (2001) Spatial distribution of late-successional coniferous species regenerationfollowing disturbance in southwestern Quebec boreal forest. Forest Ecology and Management, 140(1):29-37.

Résumé

Remnant tree stands left intact following a disturbance constitutethe sole seed banks available for regeneration of coniferous speciesthat neither bear serotinous cones nor reproduce vegetatively. Thesuccess of regeneration of tree species on these disturbed sitesis, therefore, dependent on the distance from potential seed sources.The regeneration of balsam fir (Abies balsarnea (L.) Mill.), whitespruce (Picea glauca (Moench) Voss) and white cedar (Thuja occidentalisL.) was studied at two sites in Que?bec's southwestern boreal forestin order to quantify the influence of remnant stands on spatialdistribution of regeneration. The first site is located in an areathat burned in 1944 while the second site is located in an areathat was clear-cut in the mid-1980s. Canonical correspondence analyseswere used to determine the respective contributions of environmentaldata and spatial variables to the pattern of spatial distributionof regeneration. The results reveal that distance from a remnantstand is the most important variable in explaining spatial distributionof regeneration when compared to environmental variables such assoil type, drainage, slope and altitude. The plots of regenerationdensity against distance from a remnant stand for both the burnedsite and logged site show that regeneration density decreases abruptlywith distance from a remnant stand. Furthermore, spatial autocorrelationanalyses (Moran's I) indicate that even small remnant zones cansignificantly influence the pattern of spatial distribution of regenerationfor the three species studied. The results presented here suggestthat where preestablished regeneration is not abundant enough, alternativesilvicultural systems such as strip clear-cutting or seed-tree systemscould be used instead of cuts with protection of regeneration andsoils (CPRS). © 2001 Elsevier Science B.V.

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@ARTICLE { AsselinFortinBergeron2001,
    AUTHOR = { Asselin, H. and Fortin, M.-J. and Bergeron, Y. },
    TITLE = { Spatial distribution of late-successional coniferous species regenerationfollowing disturbance in southwestern Quebec boreal forest },
    JOURNAL = { Forest Ecology and Management },
    YEAR = { 2001 },
    VOLUME = { 140 },
    PAGES = { 29-37 },
    NUMBER = { 1 },
    ABSTRACT = { Remnant tree stands left intact following a disturbance constitutethe sole seed banks available for regeneration of coniferous speciesthat neither bear serotinous cones nor reproduce vegetatively. Thesuccess of regeneration of tree species on these disturbed sitesis, therefore, dependent on the distance from potential seed sources.The regeneration of balsam fir (Abies balsarnea (L.) Mill.), whitespruce (Picea glauca (Moench) Voss) and white cedar (Thuja occidentalisL.) was studied at two sites in Que?bec's southwestern boreal forestin order to quantify the influence of remnant stands on spatialdistribution of regeneration. The first site is located in an areathat burned in 1944 while the second site is located in an areathat was clear-cut in the mid-1980s. Canonical correspondence analyseswere used to determine the respective contributions of environmentaldata and spatial variables to the pattern of spatial distributionof regeneration. The results reveal that distance from a remnantstand is the most important variable in explaining spatial distributionof regeneration when compared to environmental variables such assoil type, drainage, slope and altitude. The plots of regenerationdensity against distance from a remnant stand for both the burnedsite and logged site show that regeneration density decreases abruptlywith distance from a remnant stand. Furthermore, spatial autocorrelationanalyses (Moran's I) indicate that even small remnant zones cansignificantly influence the pattern of spatial distribution of regenerationfor the three species studied. The results presented here suggestthat where preestablished regeneration is not abundant enough, alternativesilvicultural systems such as strip clear-cutting or seed-tree systemscould be used instead of cuts with protection of regeneration andsoils (CPRS). © 2001 Elsevier Science B.V. },
    KEYWORDS = { Alternative silvicultural systems Boreal forest CCA Fire Logging Moran'sI Regeneration Regression Remnant stands Spatial autocorrelationconiferous forest disturbance regeneration spatial distributionAbies Abies balsamea Picea glauca Thuja occidentalis },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.04 },
}

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