RheaultBelangerGrondinEtAl2009

Référence

Rheault, H., Belanger, L., Grondin, P., Ouimet, R., Hebert, C. and Dussault, C. (2009) Stand composition and structure as indicators of epixylic diversity in old-growth boreal forests. Ecoscience, 16(2):183-196.

Résumé

This study aims to evaluate the relative contribution to biodiversity of 4 dominant types of virgin black spruce (Picea mariana) forests found in a typical regional landscape of the black spruce-moss bioclimatic domain of central Quebec: mature black spruce forests with a regular structure, old black spruce forests with a regular structure, old black spruce-fir (Abies balsamea) mixed forests with 2 stories, and mixed forests with irregular structure. A total of 16 stands covering these 4 forest types were sampled to characterize forest composition and structure as well as epixylic communities. Multivariate analyses of variance were performed to evaluate to what extent the epixylic community structure differed among the 4 forest types. Results show that the old two-story and irregular forest types sustain higher species richness of epixylics per unit area; therefore, these types may be key habitats for old-growth dependent species of bryophytes and lichens. The close association of epixylics with these forest types was mainly due to better moisture conditions and the presence of greater amounts of coarse woody debris in advanced decaying stages. We also demonstrated that forest compositional and structural attributes are good indicators of epixylic diversity. Finally, We Suggest that maintaining old irregular black spruce-fir mixed forests should be the primary aim of conservation strategies for old-growth forests.

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@ARTICLE { RheaultBelangerGrondinEtAl2009,
    AUTHOR = { Rheault, H. and Belanger, L. and Grondin, P. and Ouimet, R. and Hebert, C. and Dussault, C. },
    TITLE = { Stand composition and structure as indicators of epixylic diversity in old-growth boreal forests },
    JOURNAL = { Ecoscience },
    YEAR = { 2009 },
    VOLUME = { 16 },
    PAGES = { 183-196 },
    NUMBER = { 2 },
    ABSTRACT = { This study aims to evaluate the relative contribution to biodiversity of 4 dominant types of virgin black spruce (Picea mariana) forests found in a typical regional landscape of the black spruce-moss bioclimatic domain of central Quebec: mature black spruce forests with a regular structure, old black spruce forests with a regular structure, old black spruce-fir (Abies balsamea) mixed forests with 2 stories, and mixed forests with irregular structure. A total of 16 stands covering these 4 forest types were sampled to characterize forest composition and structure as well as epixylic communities. Multivariate analyses of variance were performed to evaluate to what extent the epixylic community structure differed among the 4 forest types. Results show that the old two-story and irregular forest types sustain higher species richness of epixylics per unit area; therefore, these types may be key habitats for old-growth dependent species of bryophytes and lichens. The close association of epixylics with these forest types was mainly due to better moisture conditions and the presence of greater amounts of coarse woody debris in advanced decaying stages. We also demonstrated that forest compositional and structural attributes are good indicators of epixylic diversity. Finally, We Suggest that maintaining old irregular black spruce-fir mixed forests should be the primary aim of conservation strategies for old-growth forests. },
    AF = { Rheault, HeloiseEOLEOLBelanger, LouisEOLEOLGrondin, PierreEOLEOLOuimet, RockEOLEOLHebert, ChristianEOLEOLDussault, Claude },
    C1 = { [Rheault, Heloise; Belanger, Louis] Univ Laval, Dept Sci Bois & Foret, Fac Foresterie & Geomat, Quebec City, PQ G1V 0A6, Canada.EOLEOL[Grondin, Pierre; Ouimet, Rock] Minist Ressources Nat & Faune, Direct Rech Forestiere, Quebec City, PQ G1P 3W8, Canada.EOLEOL[Hebert, Christian] Ressources Nat Canada, Ctr Foresterie Laurentides, Serv Canadien Forets, Quebec City, PQ G1V 4C7, Canada.EOLEOL[Dussault, Claude] Minist Ressources Nat & Faune, Direct Amenagement Faune, Quebec City, PQ G7X 8L6, Canada. },
    DE = { bryophytes and lichens diversity; coarse woody debris; forestEOLEOLmanagement; old-growth boreal forest },
    DI = { 10.2980/16-2-3216 },
    EM = { heloise.rheault@fec.gouv.qc.ca },
    FU = { Fonds quebecois de la recherche sur la nature et les technologiesEOLEOL(FQRNT) },
    FX = { This research was supported by the Fonds quebecois de la recherche surEOLEOLla nature et les technologies (FQRNT) and the Fonds de la recherche duEOLEOLSaguenay-Lac Saint-Jean. We are grateful to P. Legendre for statisticalEOLEOLconsultation and to A. Munson, N. Villeneuve, L. Sirois and twoEOLEOLanonymous reviewers for comments on earlier drafts. Thanks to B.EOLEOLSkinner, A. Normand, and S. Dancause for field assistance. },
    GA = { 463XS },
    J9 = { ECOSCIENCE },
    JI = { Ecoscience },
    KEYWORDS = { PICEA-ABIES TREES; CONIFEROUS FORESTS; NATURAL FOREST; SPRUCE FOREST; BLACK SPRUCE; FIR FORESTS; BRYOPHYTE; QUEBEC; LICHENS; WOOD },
    LA = { English },
    NR = { 77 },
    OWNER = { sobru1 },
    PA = { PAVILLON CHARLES-EUGENE MARCHAND, LOCAL 0166, ST FOY, QUEBEC G1K 7P4,EOLEOLCANADA },
    PG = { 14 },
    PI = { ST FOY },
    PUBLISHER = { Universite Laval },
    RP = { Rheault, H, Univ Laval, Dept Sci Bois & Foret, Fac Foresterie & Geomat,EOLEOL2405 Rue Terrasse, Quebec City, PQ G1V 0A6, Canada. },
    SC = { Ecology },
    SN = { 1195-6860 },
    TC = { 0 },
    TIMESTAMP = { 2009.07.17 },
    UT = { ISI:000267468000005 },
}

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