LafleurPareFentonEtAl2011b

Reference

Lafleur, B., Pare, D., Fenton, N.J., Bergeron, Y. (2011) Growth of planted black spruce seedlings following mechanical sitepreparation in boreal forested peatlands with variable organic layerthickness: 5-year results. Annals of Forest Science, 68:1291-1302. (URL )

Abstract

Context Following forest harvest, mechanical site preparation (MSP)is commonly used to regenerate harvested sites. In boreal forestedpeatlands, however, the effectiveness of MSP to regenerate harvestedsites is likely to be hampered by thick organic layers. Aim We soughtto determine the capability of different MSP techniques to improvegrowth conditions of planted black spruce seedlings in boreal forestedpeatlands where closed-crown productive forests could revert to unproductiveforested peatlands in the absence of severe soil disturbance. MethodsThe effects of disc scarification, mounding and patch scarificationon soil chemistry and seedling growth were contrasted. Results Seedlingsof site-prepared plots were 15% taller than those of untreated ones,irrespective of the MSP technique used, likely owing to the greaterabundance of exposed mineral soil and mesic substrates created. Moundingand patch scarification were able to expose mineral soil over a greaterproportion (>25% vs. <10%) of the treated area compared withdisc scarification and control, whereas the combined surface areaof exposed mineral soil and mesic substrates was higher in everyMSP treatments relative to the control (>57% vs. 41%, respectively).Individual seedling growth was influenced by substrate type and drainage.Seedlings planted in moderately and well-drained mesic substratesand mineral soil were 25% taller than those planted in poorly drainedfibric substrates. Conclusion All three MSP techniques were effectivebecause they succeeded in creating high-quality microsites despitethick organic layers.

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@ARTICLE { LafleurPareFentonEtAl2011b,
    AUTHOR = { Lafleur, B. and Pare, D. and Fenton, N.J. and Bergeron, Y. },
    TITLE = { Growth of planted black spruce seedlings following mechanical sitepreparation in boreal forested peatlands with variable organic layerthickness: 5-year results },
    JOURNAL = { Annals of Forest Science },
    PAGES = { 1291-1302 },
    VOLUME = { 68 },
    YEAR = { 2011 },
    NOTE = { 10.1007/s13595-011-0136-5 },
    ABSTRACT = { Context Following forest harvest, mechanical site preparation (MSP)is commonly used to regenerate harvested sites. In boreal forestedpeatlands, however, the effectiveness of MSP to regenerate harvestedsites is likely to be hampered by thick organic layers. Aim We soughtto determine the capability of different MSP techniques to improvegrowth conditions of planted black spruce seedlings in boreal forestedpeatlands where closed-crown productive forests could revert to unproductiveforested peatlands in the absence of severe soil disturbance. MethodsThe effects of disc scarification, mounding and patch scarificationon soil chemistry and seedling growth were contrasted. Results Seedlingsof site-prepared plots were 15% taller than those of untreated ones,irrespective of the MSP technique used, likely owing to the greaterabundance of exposed mineral soil and mesic substrates created. Moundingand patch scarification were able to expose mineral soil over a greaterproportion (>25% vs. <10%) of the treated area compared withdisc scarification and control, whereas the combined surface areaof exposed mineral soil and mesic substrates was higher in everyMSP treatments relative to the control (>57% vs. 41%, respectively).Individual seedling growth was influenced by substrate type and drainage.Seedlings planted in moderately and well-drained mesic substratesand mineral soil were 25% taller than those planted in poorly drainedfibric substrates. Conclusion All three MSP techniques were effectivebecause they succeeded in creating high-quality microsites despitethick organic layers. },
    AFFILIATION = { NSERC-UQAT-UQAM Industrial Chair in Sustainable Forest Management,Université du Québec en Abitibi-Témiscamingue, 445 boul. de l'Université,Rouyn-Noranda, Québec J9X 5E4, Canada },
    ISSN = { 1286-4560 },
    KEYWORD = { Environment },
    OWNER = { DL },
    PUBLISHER = { Springer Paris },
    URL = { http://dx.doi.org/10.1007/s13595-011-0136-5 },
}

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