NoletBouffardDoyonEtAl2008

Référence

Nolet, P., Bouffard, D., Doyon, F. and Delagrange, S. (2008) Relationship between canopy disturbance history and current sapling density of Fagus grandifolia and Acer saccharum in a northern hardwood landscape. Canadian Journal of Forest Research, 38(2):216-225. (Scopus )

Résumé

To shed light on the currently increasing proportion of Fagus grandifolia Ehrh. saplings in the tolerant hardwood forests of Quebec, we studied 48 Acer saccharum Marsh. dominated stands with contrasting histories of canopy disturbance: old commercial clear-cutting (CC), old fire (F), and either one or two partial cuts (1PC and 2PC). Our results indicated that higher densities of both F. grandifolia and A. saccharum saplings were associated with partial cutting histories (1PC and 2PC) than with severe canopy disturbance (CC and F). The density of F. grandifolia saplings was not related to any soil or stand characteristics in stands with a history of severe canopy disturbance. However, in stands with a history of partial canopy disturbances, the relative density of F. grandifolia saplings as compared with A. saccharum was related to soil C/N ratio and the presence of F. grandifolia overstory trees, whereas the absolute density showed a negative relationship with stand basal area. Therefore, it appears that partial canopy disturbances favored the regeneration of F. grandifolia relative to A. saccharum, whereas severe canopy disturbances may have provided an advantage to A. saccharum. We suggest that the presence of a light threshold can explain this shift in sapling performance between these two species. © 2008 NRC.

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@ARTICLE { NoletBouffardDoyonEtAl2008,
    AUTHOR = { Nolet, P. and Bouffard, D. and Doyon, F. and Delagrange, S. },
    TITLE = { Relationship between canopy disturbance history and current sapling density of Fagus grandifolia and Acer saccharum in a northern hardwood landscape },
    JOURNAL = { Canadian Journal of Forest Research },
    YEAR = { 2008 },
    VOLUME = { 38 },
    PAGES = { 216-225 },
    NUMBER = { 2 },
    ABSTRACT = { To shed light on the currently increasing proportion of Fagus grandifolia Ehrh. saplings in the tolerant hardwood forests of Quebec, we studied 48 Acer saccharum Marsh. dominated stands with contrasting histories of canopy disturbance: old commercial clear-cutting (CC), old fire (F), and either one or two partial cuts (1PC and 2PC). Our results indicated that higher densities of both F. grandifolia and A. saccharum saplings were associated with partial cutting histories (1PC and 2PC) than with severe canopy disturbance (CC and F). The density of F. grandifolia saplings was not related to any soil or stand characteristics in stands with a history of severe canopy disturbance. However, in stands with a history of partial canopy disturbances, the relative density of F. grandifolia saplings as compared with A. saccharum was related to soil C/N ratio and the presence of F. grandifolia overstory trees, whereas the absolute density showed a negative relationship with stand basal area. Therefore, it appears that partial canopy disturbances favored the regeneration of F. grandifolia relative to A. saccharum, whereas severe canopy disturbances may have provided an advantage to A. saccharum. We suggest that the presence of a light threshold can explain this shift in sapling performance between these two species. © 2008 NRC. },
    COMMENT = { Cited By (since 1996): 2 Export Date: 10 February 2010 Source: Scopus CODEN: CJFRA doi: 10.1139/X07-160 },
    ISSN = { 00455067 (ISSN) },
    KEYWORDS = { Biodiversity, Forestry, Soils, Clear-cutting (CC), Landscape, Wood, canopy, comparative study, deciduous tree, environmental disturbance, history, light effect, population density, sapling, threshold, Ecology, Forestry, Soil, Wood, Canada, North America, Quebec [Canada], Acer, Acer saccharum, Fagus, Fagus grandifolia },
    OWNER = { Luc },
    TIMESTAMP = { 2010.02.10 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-40749133409&partnerID=40&md5=ae4ff6819f65d9663d73fc202ee10b51 },
}

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