Influence of fire regime on vegetative growth and reproduction of jack pine (Pinus banksiana) in the southern boreal forest of Québec, Canada.

Chris Briand, Dylan Schwilk, S Gauthier, Y Bergeron

Research output: Contribution to journalArticle

Abstract

In the southern boreal forest of Québec, jack pine (Pinus banksiana Lamb.) stands occur in two habitat units, mainland and island. These two habitats have historically experienced different fire regimes. Infrequent lethal fires characterize the mainland, while frequent non-lethal and infrequent lethal fires characterize the islands. Previous studies have shown that highly serotinous jack pine trees tend to dominate on the mainland, while intermediate and non-serotinous trees are more abundant on the islands. A comparison of morphological characters describing tree form, cone morphology and reproductive output was made on 14 mainland and 10 island stands in an effort to determine if they exhibited variation consistent with variation in fire regime and serotiny. Generally, mean values of the morphological and reproductive characters measured did not vary between the two habitats, nor did bark allometry. Live crown height to tree height ratio, as a function of tree age, and cone number a
Original languageEnglish
Pages (from-to)157-164
JournalPlant Ecology
DOIs
StatePublished - Feb 2015

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