Low light availability associated with American beech is the main factor for reduced sugar maple seedling Survival and growth rates in a hardwood forest of southern Quebec [r-libre/1279]

Collin, Alexandre; Messier, Christian; Kembel, Steven et Bélanger, Nicolas (2017). Low light availability associated with American beech is the main factor for reduced sugar maple seedling Survival and growth rates in a hardwood forest of southern Quebec. Forests, 8 (11), 413. https://doi.org/10.3390/f8110413

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Catégorie de document :	Articles de revues
Évaluation par un comité de lecture :	Oui
Étape de publication :	Publié
Résumé :	Several recent studies have reported a marked increase in American beech dominance (Fagus grandifolia Ehrh.) relative to sugar maple (Acer saccharum Marsh.) in late successional forests of North America. However, many factors have been proposed to explain this sudden shift in tree species composition. We investigated the microsite factors responsible for maple regeneration failure under maple-beech stands, focusing on both light availability and soil conditions. The survival and growth of maple seedlings planted in the natural soil and in pots with enriched soil were monitored for two years, as well as foliar nutrition and herbivory damages of natural seedlings. The results indicate that low light availability associated with the presence of beech is the primary factor leading to maple regeneration failures. Soil nutrient availability and foliar nutrition of natural seedlings did not differ between forest types. Yet, the results indicate that factors such as allelopathy and preferential herbivory on maple seedlings under beech could be superimposed effects that hinder maple regeneration. Under similar forests, a control of beech sapling abundance in the understory followed by selection cutting could be one way to promote and maintain maple populations in the longer term.
Adresse de la version officielle :	http://www.mdpi.com/1999-4907/8/11/413
Déposant:	Bélanger, Nicolas
Responsable :	Nicolas Bélanger
Dépôt :	29 nov. 2017 18:54
Dernière modification :	29 nov. 2017 18:54

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Low light availability associated with American beech is the main factor for reduced sugar maple seedling Survival and growth rates in a hardwood forest of southern Quebec. (deposited 03 nov. 2017 17:02)
- Low light availability associated with American beech is the main factor for reduced sugar maple seedling Survival and growth rates in a hardwood forest of southern Quebec. (deposited 29 nov. 2017 18:54) [Actuellement Affiché]

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