DrouinBradleyLapointeEtAl2014

Référence

Drouin, M., Bradley, R.L., Lapointe, L., Whalen, J. (2014) Non-native anecic earthworms (Lumbricus terrestris L.) reduce seed germination and seedling survival of temperate and boreal trees species. Applied Soil Ecology, 75:145-149. (Scopus )

Résumé

Recent studies have shown that the introduction of non-native earthworms in previously earthworm-free soils may have negative impacts on the recruitment of certain understory plant species in northern temperate forests. There is a need, therefore, to understand the mechanisms that may underlie this phenomenon. A microcosm study was conducted to test the effects of the anecic earthworm, Lumbricus terrestris L., on the number of days for germination, % seed germination, seedling survival and seedling biomass of 14 tree species native to southern Quebec (Canada). Seeds of these species were germinated and grown in the presence or absence of L. terrestris. The presence of earthworms significantly reduced % seed germination of seven tree species, as well as seedling survival of three tree species. The germination date of three tree species was significantly affected, either positively or negatively, by the presence of earthworms. Earthworms had no effect on seedling biomass. Results suggest that the introduction of L. terrestris into forested ecosystems of southern Québec may potentially alter overstory composition through several mechanisms that differentially affect the recruitment of various tree species in the understory. © 2013 Elsevier B.V.

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@ARTICLE { DrouinBradleyLapointeEtAl2014,
    AUTHOR = { Drouin, M. and Bradley, R.L. and Lapointe, L. and Whalen, J. },
    TITLE = { Non-native anecic earthworms (Lumbricus terrestris L.) reduce seed germination and seedling survival of temperate and boreal trees species },
    JOURNAL = { Applied Soil Ecology },
    YEAR = { 2014 },
    VOLUME = { 75 },
    PAGES = { 145-149 },
    ABSTRACT = { Recent studies have shown that the introduction of non-native earthworms in previously earthworm-free soils may have negative impacts on the recruitment of certain understory plant species in northern temperate forests. There is a need, therefore, to understand the mechanisms that may underlie this phenomenon. A microcosm study was conducted to test the effects of the anecic earthworm, Lumbricus terrestris L., on the number of days for germination, % seed germination, seedling survival and seedling biomass of 14 tree species native to southern Quebec (Canada). Seeds of these species were germinated and grown in the presence or absence of L. terrestris. The presence of earthworms significantly reduced % seed germination of seven tree species, as well as seedling survival of three tree species. The germination date of three tree species was significantly affected, either positively or negatively, by the presence of earthworms. Earthworms had no effect on seedling biomass. Results suggest that the introduction of L. terrestris into forested ecosystems of southern Québec may potentially alter overstory composition through several mechanisms that differentially affect the recruitment of various tree species in the understory. © 2013 Elsevier B.V. },
    COMMENT = { Export Date: 6 January 2014 Source: Scopus CODEN: ASECF doi: 10.1016/j.apsoil.2013.11.006 },
    ISSN = { 09291393 (ISSN) },
    KEYWORDS = { Lumbricus terrestris, Northern temperate and boreal tree species, Seed germination, Seedling survival },
    OWNER = { Luc },
    TIMESTAMP = { 2014.01.06 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-84890150349&partnerID=40&md5=0a0901a7479c3f1add33f3b6d7c3af76 },
}

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