BeaudetBrissonMessierEtAl2007

Référence

Beaudet, M., Brisson, J., Messier, C., Gravel, D. (2007) Effect of a major ice storm on understory light conditions in an old-growth Acer-Fagus forest: Pattern of recovery over seven years. Forest Ecology and Management, 242(2-3):553-557.

Résumé

We evaluated the effects of a major ice storm on understory light conditions (PPFD. Following the ice storm, the stand-level mean PPFD, from 0.3 to 4 m aboveground. Despite its magnitude, the post-ice storm increase in light transmission was short-lived. By 1999 (2-year+), the mean light levels had decreased by half, and recovery to pre-storm conditions occurred within 3-7 years, depending on height. The decrease in light transmission during the post-disturbance years followed an inverse J-shape trend, indicating more dynamic changes early after disturbance. By 2004 (7-year+), light levels at ?2 m had become slightly but significantly lower than before the ice storm, with most microsites receiving <2%PPFD. The ice storm led to a synchronized increase of the light levels at almost all understory locations, which might allow a high proportion of the advanced regeneration to experience a release. However, due to the rapid recovery of the light conditions to levels similar or lower than before the ice storm, this disturbance should be more advantageous to shade-tolerant species. © 2007 Elsevier B.V. All rights reserved.

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@ARTICLE { BeaudetBrissonMessierEtAl2007,
    AUTHOR = { Beaudet, M. and Brisson, J. and Messier, C. and Gravel, D. },
    TITLE = { Effect of a major ice storm on understory light conditions in an old-growth Acer-Fagus forest: Pattern of recovery over seven years },
    JOURNAL = { Forest Ecology and Management },
    YEAR = { 2007 },
    VOLUME = { 242 },
    PAGES = { 553-557 },
    NUMBER = { 2-3 },
    NOTE = { 03781127 (ISSN) Export Date: 27 April 2007 Source: Scopus CODEN: FECMD doi: 10.1016/j.foreco.2007.01.068 Language of Original Document: English Correspondence Address: Beaudet, M.; Centre d'e?tude sur la fore?t (CEF); De?partement des sciences biologiques; Universite? du Que?bec a? Montre?al; C.P. 8888, Succ. Centre-Ville Montre?al, Que. H8T 2N5, Canada; email: marilou.beaudet@sympatico.ca References: Aarssen, L.W., Francq, A.E., Effects of ice storm canopy gaps on shoot architecture in young sugar maple (Acer saccharum) (2004) Ecoscience, 11, pp. 201-208; ; Beaudet, M., Messier, C., Pare?, D., Brisson, J., Bergeron, Y., Possible mechanisms of sugar maple regeneration failure and replacement by beech in the Boise?-des-Muir old-growth forest, Quebec (1999) Ecoscience, 6, pp. 264-271; Beaudet, M., Messier, C., Leduc, A., Understorey light profiles in temperate deciduous forests: recovery process following selection cutting (2004) J. Ecol., 92, pp. 328-338; ; Bellingham, P.J., Tanner, E.V.J., Rich, P.M., Goodland, T.C.R., Changes in light below the canopy of a Jamaican montane rain-forest after a hurricane (1996) J. Trop. Ecol., 12, pp. 699-722; Bragg, D.C., Shelton, M.G., Zeide, B., Impacts and management implications of ice storms on forests in the southern United States (2003) For. Ecol. Manage., 186, pp. 99-123; Brisson, J., Bergeron, Y., Bouchard, A., The history and tree stratum of an old-growth forest of Haut-Saint-Laurent Region, Quebec (1992) Nat. Areas J., 12, pp. 3-9; Brisson, J., Bergeron, Y., Bouchard, A., Leduc, A., Beech-maple dynamics in an old-growth forest in southern Que?bec, Canada (1994) Ecoscience, 1, pp. 40-46; Brisson, J., Lareau, C., Beaudet, M., Millet, J., Messier, C., Bouchard, A., (2001) Re?tablissement de l'e?rablie?re suite aux dommages cause?s par le verglas - Le cas d'une fore?t ancienne du sud-ouest du Que?bec., , Institut de recherche en biologie ve?ge?tale, Montreal; Brommit, A.G., Charbonneau, N., Contreras, T.A., Fahrig, L., Crown loss and subsequent branch sprouting of forest trees in response to a major ice storm (2004) Bull. Torrey Bot. Soc., 13, pp. 169-176; Canham, C.D., Suppression and release during canopy recruitment in Acer saccharum (1985) Bull. Torrey Bot. Club, 112, pp. 134-145; Canham, C.D., Suppression and release during canopy recruitment in Fagus grandifolia (1990) Bull. Torrey Bot. 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    ABSTRACT = { We evaluated the effects of a major ice storm on understory light conditions (PPFD. Following the ice storm, the stand-level mean PPFD, from 0.3 to 4 m aboveground. Despite its magnitude, the post-ice storm increase in light transmission was short-lived. By 1999 (2-year+), the mean light levels had decreased by half, and recovery to pre-storm conditions occurred within 3-7 years, depending on height. The decrease in light transmission during the post-disturbance years followed an inverse J-shape trend, indicating more dynamic changes early after disturbance. By 2004 (7-year+), light levels at ?2 m had become slightly but significantly lower than before the ice storm, with most microsites receiving <2%PPFD. The ice storm led to a synchronized increase of the light levels at almost all understory locations, which might allow a high proportion of the advanced regeneration to experience a release. However, due to the rapid recovery of the light conditions to levels similar or lower than before the ice storm, this disturbance should be more advantageous to shade-tolerant species. © 2007 Elsevier B.V. All rights reserved. },
    KEYWORDS = { Canopy disturbance Ice storm Northern hardwoods Post-disturbance recovery Understory light conditions },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.05 },
}

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