LafleurPareFentonEtAl2011a
Référence
Lafleur, B., Pare, D., Fenton, N.J., Bergeron, Y. (2011) Growth and nutrition of black spruce seedlings in response to disruptionof Pleurozium and Sphagnum moss carpets in boreal forested peatlands. Plant and Soil, 345(1):141-153. (Scopus 
)
Résumé
In boreal forested peatlands, we disturbed Sphagnum spp. and Pleuroziumschreberi carpets to see how disturbance influenced substrate physico-chemistry,and growth and foliar nutrition of planted Picea mariana seedlings.Carpets were hand disturbed using gardening tools to a depth of approximately25 cm. Carpet disturbance was aimed at disrupting only the organiclayer and did not result in the mixing of organic matter with mineralsoil. Disturbed carpets, whether P. schreberi or Sphagnum spp., werewarmer than undisturbed carpets and had a lower cover of ericaceousshrubs. Pleurozium schreberi carpets had a higher decomposition indexthan Sphagnum spp. carpets, whereas disturbance had no effect onthis variable. Pleurozium schreberi had higher Ntot and dissolvedorganic N concentrations (DON) than Sphagnum spp., whereas disturbanceincreased NH4+ availability in both substrates. Moss disruption increasedseedling growth rates as well as their foliar N and P concentrationsin both substrates and these variables remained higher in P. schreberithan in Sphagnum spp. within a given treatment. Seedling growth waspositively correlated to substrate Ntot, NH4+ and DON concentrations,and to foliar N and P concentrations, and negatively to substrateC/N and ericaceous shrub cover. Disruption of the moss carpets withoutmineral soil mixing improved black spruce seedling growth and nutritionin both moss types but the superiority of P. schreberi compared toSphagnum spp. as a growing substrate remained present. © 2011 SpringerScience+Business Media B.V.
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@ARTICLE { LafleurPareFentonEtAl2011a,
AUTHOR = { Lafleur, B. and Pare, D. and Fenton, N.J. and Bergeron, Y. },
TITLE = { Growth and nutrition of black spruce seedlings in response to disruptionof Pleurozium and Sphagnum moss carpets in boreal forested peatlands },
JOURNAL = { Plant and Soil },
YEAR = { 2011 },
VOLUME = { 345 },
PAGES = { 141-153 },
NUMBER = { 1 },
ABSTRACT = { In boreal forested peatlands, we disturbed Sphagnum spp. and Pleuroziumschreberi carpets to see how disturbance influenced substrate physico-chemistry,and growth and foliar nutrition of planted Picea mariana seedlings.Carpets were hand disturbed using gardening tools to a depth of approximately25 cm. Carpet disturbance was aimed at disrupting only the organiclayer and did not result in the mixing of organic matter with mineralsoil. Disturbed carpets, whether P. schreberi or Sphagnum spp., werewarmer than undisturbed carpets and had a lower cover of ericaceousshrubs. Pleurozium schreberi carpets had a higher decomposition indexthan Sphagnum spp. carpets, whereas disturbance had no effect onthis variable. Pleurozium schreberi had higher Ntot and dissolvedorganic N concentrations (DON) than Sphagnum spp., whereas disturbanceincreased NH4+ availability in both substrates. Moss disruption increasedseedling growth rates as well as their foliar N and P concentrationsin both substrates and these variables remained higher in P. schreberithan in Sphagnum spp. within a given treatment. Seedling growth waspositively correlated to substrate Ntot, NH4+ and DON concentrations,and to foliar N and P concentrations, and negatively to substrateC/N and ericaceous shrub cover. Disruption of the moss carpets withoutmineral soil mixing improved black spruce seedling growth and nutritionin both moss types but the superiority of P. schreberi compared toSphagnum spp. as a growing substrate remained present. © 2011 SpringerScience+Business Media B.V. },
COMMENT = { Export Date: 17 August 2011Source: ScopusCODEN: PLSOAdoi: 10.1007/s11104-011-0767-1 },
ISSN = { 0032079X (ISSN) },
KEYWORDS = { Black spruce, Boreal forested peatlands, Foliar nutrition, Pleurozium,Seedling growth, Sphagnum, Substrate disturbance },
OWNER = { Luc },
TIMESTAMP = { 2011.08.17 },
URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-79960561485&partnerID=40&md5=e360611e2cd91b5ae45bb5ac203a49b4 },
}
