DuchesneOuimetHoule2010

Référence

Duchesne, L., Ouimet, R., Houle, D. (2010) Nutrient transfer by leaf litterfall during a sugar maple decline episode at Lake Clair watershed, Québec, Canada. Plant Ecology, 208(2):213-221. (Scopus )

Résumé

In a declining sugar maple (SM) stand, we tested the hypothesis that an increasing relative abundance of American beech (AB) and yellow birch (YB) would improve litter quality by providing a higher proportion of litterfall richer in base cations and lower in acidity. From 1989 to 2006, SM leaf fall diminished from 59% (1,718 kg ha-1 year-1) to 36% (915 kg ha-1 year-1) of the total leaf fall biomass. Overall, the increase in AB and YB litterfall compensated for the SM decrease, resulting in constant annual leaf litterfall fluxes (2,803 kg ha-1 year-1) over the period studied. However, because the leaf litter for AB and YB had Ca and Mg concentrations 2-3 times higher than did SM, Ca and Mg concentrations and fluxes in leaf litterfall significantly increased between 1989 and 2006. Leaf litterfall of AB and YB also has a higher base/acid ratio than SM. Consequently, changes in forest composition following SM decline led to a clear improvement in litterfall quality in terms of base cations content and fluxes and acid-base properties. © 2009 Springer Science+Business Media B.V.

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@ARTICLE { DuchesneOuimetHoule2010,
    AUTHOR = { Duchesne, L. and Ouimet, R. and Houle, D. },
    TITLE = { Nutrient transfer by leaf litterfall during a sugar maple decline episode at Lake Clair watershed, Québec, Canada },
    JOURNAL = { Plant Ecology },
    YEAR = { 2010 },
    VOLUME = { 208 },
    PAGES = { 213-221 },
    NUMBER = { 2 },
    NOTE = { cited By 4 },
    ABSTRACT = { In a declining sugar maple (SM) stand, we tested the hypothesis that an increasing relative abundance of American beech (AB) and yellow birch (YB) would improve litter quality by providing a higher proportion of litterfall richer in base cations and lower in acidity. From 1989 to 2006, SM leaf fall diminished from 59% (1,718 kg ha-1 year-1) to 36% (915 kg ha-1 year-1) of the total leaf fall biomass. Overall, the increase in AB and YB litterfall compensated for the SM decrease, resulting in constant annual leaf litterfall fluxes (2,803 kg ha-1 year-1) over the period studied. However, because the leaf litter for AB and YB had Ca and Mg concentrations 2-3 times higher than did SM, Ca and Mg concentrations and fluxes in leaf litterfall significantly increased between 1989 and 2006. Leaf litterfall of AB and YB also has a higher base/acid ratio than SM. Consequently, changes in forest composition following SM decline led to a clear improvement in litterfall quality in terms of base cations content and fluxes and acid-base properties. © 2009 Springer Science+Business Media B.V. },
    AUTHOR_KEYWORDS = { Acer saccharum; Decline; Forest dynamics; Forest health; Litterfall fluxes; Nutrient cycling },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s11258-009-9699-8 },
    KEYWORDS = { acidity; biomass; cation; concentration (composition); deciduous tree; forest dynamics; forest health; hypothesis testing; litterfall; nutrient cycling; population decline; relative abundance; succession, Canada; Lake Clair; Quebec [Canada], Acer; Acer saccharum; Betula alleghaniensis; Fagus; Fagus grandifolia },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-77951978548&partnerID=40&md5=19ba80d27870d5ce7d7e5e878941060b },
}

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