LafleurCazalLeducEtAl2015

Reference

Lafleur, B., Cazal, A., Leduc, A. and Bergeron, Y. (2015) Soil organic layer thickness influences the establishment and growth of trembling aspen (Populus tremuloides) in boreal forests. Forest Ecology and Management, 347:209 - 216. (URL )

Abstract

Abstract In the North American boreal forest, the presence of aspen (Populus tremuloides Michx.) is thought to be constrained on sites where thick (>25 cm) soil organic layers (SOL) prevail. Aspen can reproduce both by seeds and suckers, but it is still unknown how {SOL} thickness influences both modes of reproduction. In this study, we sought to determine how {SOL} thickness and chemistry in black spruce dominated stands influences aspen regeneration and growth. Aspen abundance was negatively related to {SOL} thickness and logistic regression indicated that the probability to detect an aspen declined from 30% at SOL = 0 cm to 10% at 30 cm. Our results also indicated that aspen diameter at breast height was significantly negatively correlated with {SOL} thickness and black spruce abundance, and positively correlated with soil Ntot, Ca, {CEC} and pH. Finally, we failed to detect any significant effect of {SOL} on aspen mode of regeneration (i.e. seeds or suckers). Our study shows that through changes in physical and chemical soil properties, {SOL} accumulation equally hinders both aspen seedling germination and growth, and sucker development.

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@ARTICLE { LafleurCazalLeducEtAl2015,
    TITLE = { Soil organic layer thickness influences the establishment and growth of trembling aspen (Populus tremuloides) in boreal forests },
    AUTHOR = { Lafleur, B. and Cazal, A. and Leduc, A. and Bergeron, Y. },
    JOURNAL = { Forest Ecology and Management },
    YEAR = { 2015 },
    NUMBER = { 0 },
    PAGES = { 209 - 216 },
    VOLUME = { 347 },
    ABSTRACT = { Abstract In the North American boreal forest, the presence of aspen (Populus tremuloides Michx.) is thought to be constrained on sites where thick (>25 cm) soil organic layers (SOL) prevail. Aspen can reproduce both by seeds and suckers, but it is still unknown how \{SOL\} thickness influences both modes of reproduction. In this study, we sought to determine how \{SOL\} thickness and chemistry in black spruce dominated stands influences aspen regeneration and growth. Aspen abundance was negatively related to \{SOL\} thickness and logistic regression indicated that the probability to detect an aspen declined from 30% at SOL = 0 cm to 10% at 30 cm. Our results also indicated that aspen diameter at breast height was significantly negatively correlated with \{SOL\} thickness and black spruce abundance, and positively correlated with soil Ntot, Ca, \{CEC\} and pH. Finally, we failed to detect any significant effect of \{SOL\} on aspen mode of regeneration (i.e. seeds or suckers). Our study shows that through changes in physical and chemical soil properties, \{SOL\} accumulation equally hinders both aspen seedling germination and growth, and sucker development. },
    DOI = { http://dx.doi.org/10.1016/j.foreco.2015.03.031 },
    ISSN = { 0378-1127 },
    KEYWORDS = { Black spruce },
    OWNER = { DanielLesieur },
    TIMESTAMP = { 2015.04.07 },
    URL = { http://www.sciencedirect.com/science/article/pii/S037811271500170X },
}

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