Document


Title

Postfire lichen-spruce woodland recovery at the limit of the boreal forest in northern Quebec
Document Type: Journal Article
Author(s): Claude Morneau; Serge Payette
Publication Year: 1989

Cataloging Information

Keyword(s):
  • black spruce
  • boreal forest
  • Canada
  • Cladina stellaris
  • fire
  • lichen recovery
  • Picea mariana
  • Quebec
  • regeneration
Region(s):
Record Maintained By:
Record Last Modified: December 3, 2015
FRAMES Record Number: 4730

Description

A 250-yr postfire plant chronosequence in well-drained sites at the northern limit of the boreal forest in the Grande riviere de la Baleine area, N. Quebec, was reconstructed from 9 sites associated with the development of the lichen/spruce (Cladina stellaris/Picea mariana) woodland. Most species recorded along the chronosequence reinvaded burned sites within 15 yr after fire, but important vegetational changes occurred during the first 100 yr of postfire recovery, corresponding to full development of the lichen/spruce woodland. No vascular plant species replacement was observed during succession, whereas by contrast a well-defined lichen-bryophyte sequence occurred along 5 successional stages. Species diversity (Shannon index) was low 4 yr after fire, but it reached a max. about 25 yr after fire and then declined and stabilized at a low value in old-growth woodlands. The active period of P. mariana sexual regeneration spans about 20-25 yr, with max. regeneration occurring 5-14 yr after fire. After this period, seed regeneration is mostly sporadic and sustained layering becomes fairly common at all sites. From 100 to 250 yr after fire, no significant changes were observed in vegetation structure, floristic composition, species diversity and spruce regeneration, suggesting that lichen woodlands are self-perpetuating in the absence of fire. In limiting spruce regeneration at the ground surface, the lichen cover seems to be the most important factor controlling the open structure of the lichen/spruce woodland.

Online Link(s):
Citation:
Morneau, Claude; Payette, Serge. 1989. Postfire lichen-spruce woodland recovery at the limit of the boreal forest in northern Quebec. Canadian Journal of Botany 67(9):2770-2782.