Ward2014

Référence

Ward, C., Pothier, D. and Pare, D. (2014) Do Boreal Forests Need Fire Disturbance to Maintain Productivity? Ecosystems, 17(6):1053-1067. (Scopus )

Résumé

Fire is considered as a major driver of ecosystem processes of the boreal forest with important effects on soil and forest productivity. When the interval between successive forest fires is long, a thick organic layer can develop and eventually interfere with processes involved in tree nutrient uptake. We thus hypothesized that the organic layer of well-drained boreal stands increases with time since last fire and that thick organic layers are associated with low values of soil temperature, nutrient availability, and site productivity. This was tested on a chronosequence composed of 90 boreal stands ranging from 1 to more than 2000 years after fire within which we measured organic layer thickness (OLT), mineral soil and foliage nutrient concentrations, soil temperature, ground cover of Sphagnum sp. and Ericaceae sp., leaf area index, aboveground biomass production, and growth efficiency index (GEI). The OLT increased during the first 64 years after fire but stayed statistically constant thereafter. This initial increase in OLT was accompanied by an increase in the C/N ratio and decreases in soil temperature, foliar N, and GEI. The absence of a significant decrease in productivity from 80 to 2000 years post-fire suggests that these characteristics reach a steady state early in the chronosequence that persists in the absence of major disturbances or changes in site conditions. These results imply that management practices may not be necessary to maintain boreal forest productivity in the absence of fire on well-drained sites. © 2014 Springer Science+Business Media New York.

Format EndNote

Vous pouvez importer cette référence dans EndNote.

Format BibTeX-CSV

Vous pouvez importer cette référence en format BibTeX-CSV.

Format BibTeX

Vous pouvez copier l'entrée BibTeX de cette référence ci-bas, ou l'importer directement dans un logiciel tel que JabRef .

@ARTICLE { Ward2014,
    AUTHOR = { Ward, C. and Pothier, D. and Pare, D. },
    TITLE = { Do Boreal Forests Need Fire Disturbance to Maintain Productivity? },
    JOURNAL = { Ecosystems },
    YEAR = { 2014 },
    VOLUME = { 17 },
    PAGES = { 1053-1067 },
    NUMBER = { 6 },
    ABSTRACT = { Fire is considered as a major driver of ecosystem processes of the boreal forest with important effects on soil and forest productivity. When the interval between successive forest fires is long, a thick organic layer can develop and eventually interfere with processes involved in tree nutrient uptake. We thus hypothesized that the organic layer of well-drained boreal stands increases with time since last fire and that thick organic layers are associated with low values of soil temperature, nutrient availability, and site productivity. This was tested on a chronosequence composed of 90 boreal stands ranging from 1 to more than 2000 years after fire within which we measured organic layer thickness (OLT), mineral soil and foliage nutrient concentrations, soil temperature, ground cover of Sphagnum sp. and Ericaceae sp., leaf area index, aboveground biomass production, and growth efficiency index (GEI). The OLT increased during the first 64 years after fire but stayed statistically constant thereafter. This initial increase in OLT was accompanied by an increase in the C/N ratio and decreases in soil temperature, foliar N, and GEI. The absence of a significant decrease in productivity from 80 to 2000 years post-fire suggests that these characteristics reach a steady state early in the chronosequence that persists in the absence of major disturbances or changes in site conditions. These results imply that management practices may not be necessary to maintain boreal forest productivity in the absence of fire on well-drained sites. © 2014 Springer Science+Business Media New York. },
    ADDRESS = { Ressources naturelles Canada, Service canadien des forêts, Centre de foresterie des Laurentides, 1055 rue du P.E.P.S., Succ. Sainte-Foy, C.P. 10380, QC, QC, G1V 4C7, Canada },
    BOOKTITLE = { Ecosystems },
    COMMENT = { Export Date: 16 September 2014 },
    KEYWORDS = { boreal forest, leaf area index, organic layer thickness, post-fire chronosequence, site productivity, soil nutrient concentrations, soil temperature },
    OWNER = { Luc },
    TIMESTAMP = { 2014.09.16 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84906093785&partnerID=40&md5=f22ced3b76fbab02d2018fddbf9c39bc },
}

********************************************************** ***************** Facebook Twitter *********************** **********************************************************

Abonnez-vous à
l'Infolettre du CEF!

********************************************************** ***************** Pub - Mycorhizes_2019 ****************** **********************************************************

********************************************************** ***************** Pub - Symphonies_Boreales ****************** **********************************************************

********************************************************** ***************** Boîte à trucs *************** **********************************************************

CEF-Référence
La référence vedette !

Jérémie Alluard (2016) Les statistiques au moments de la rédaction 

  • Ce document a pour but de guider les étudiants à intégrer de manière appropriée une analyse statistique dans leur rapport de recherche.

Voir les autres...