ElieRuelLussier2009

Référence

Elie, J.-G., Ruel, J.-C., Lussier, J.-M. (2009) Effect of browsing, seedbed, and competition on the development of yellow birch seedlings in high-graded stands. Northern Journal of Applied Forestry, 26(3):99-105. (Scopus )

Résumé

Many hardwood or mixedwood stands of northeastern North America have been high graded in the past and need restoration treatments to bring them back to an acceptable level of production. Even when early seedling establishment can be secured, further development may be compromised by many factors. This study looks at the effect of seedbed, browsing, and competition on the growth and survival of yellow birch (Betula alleghaniensis Britt.) seedlings that became established after a brushing and scarification treatment applied in high-graded mixedwood stands of Quebec, Canada. The seedbed types studied include 1-m-wide scarified patches, 2-m-wide scarified patches, and mounds. Browsing impact was assessed by placing fences around half of the plots. Half of the plots were released from competing vegetation. Browsing by hare (Lepus americanus) was seen as a major factor controlling seedling development between 3 and 6 years after scarification. It reduced both survival and growth and obscured the effect of other factors. In the absence of browsing, competition had a major effect on mounds but not on scarified patches. Mounds were found to have the best growth potential when competition and browsing were controlled. The scarified patches had the best growth when competition and browsing were allowed. Even though mortality was somewhat higher on scarified patches, initial densities were very high and still provide more seedlings than required. Copyright © 2009 by the Society of American Foresters.

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@ARTICLE { ElieRuelLussier2009,
    AUTHOR = { Elie, J.-G. and Ruel, J.-C. and Lussier, J.-M. },
    TITLE = { Effect of browsing, seedbed, and competition on the development of yellow birch seedlings in high-graded stands },
    JOURNAL = { Northern Journal of Applied Forestry },
    YEAR = { 2009 },
    VOLUME = { 26 },
    PAGES = { 99-105 },
    NUMBER = { 3 },
    ABSTRACT = { Many hardwood or mixedwood stands of northeastern North America have been high graded in the past and need restoration treatments to bring them back to an acceptable level of production. Even when early seedling establishment can be secured, further development may be compromised by many factors. This study looks at the effect of seedbed, browsing, and competition on the growth and survival of yellow birch (Betula alleghaniensis Britt.) seedlings that became established after a brushing and scarification treatment applied in high-graded mixedwood stands of Quebec, Canada. The seedbed types studied include 1-m-wide scarified patches, 2-m-wide scarified patches, and mounds. Browsing impact was assessed by placing fences around half of the plots. Half of the plots were released from competing vegetation. Browsing by hare (Lepus americanus) was seen as a major factor controlling seedling development between 3 and 6 years after scarification. It reduced both survival and growth and obscured the effect of other factors. In the absence of browsing, competition had a major effect on mounds but not on scarified patches. Mounds were found to have the best growth potential when competition and browsing were controlled. The scarified patches had the best growth when competition and browsing were allowed. Even though mortality was somewhat higher on scarified patches, initial densities were very high and still provide more seedlings than required. Copyright © 2009 by the Society of American Foresters. },
    COMMENT = { Export Date: 23 October 2009 Source: Scopus },
    KEYWORDS = { Betula alleghaniensis, Competition, Hare, Site preparation },
    OWNER = { Luc },
    TIMESTAMP = { 2009.10.23 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-70349559134&partnerID=40 },
}

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