Effects of Soil Burn Severity on Post-Fire Tree Recruitment in Boreal Forest

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Landscape-level interactions of prefire vegetation, burn severity, and postfire vegetation over a 16-year period in interior Alaska (2005, background): “These small, abundant seeds germinate but establish poorly on organic substrates, compared with larger seeded spruce, as a result of having less in reserve to support initial root growth through the droughty duff horizon (Zasada et al. 1983; Johnstone and Chapin 2005 ).”
Satellite observations of high northern latitude vegetation productivity changes between 1982 and 2008: ecological variability and regional differences (2011, background): “The latter question is particularly pertinent if continued climate warming in the coming decades increases spruce mortality, and associated shifts in the fire regime limit spruce forest regeneration (Johnstone and Chapin 2006, Beck et al 2011c).”
The reduction of organic-layer depth by wildfire in the North American boreal forest and its effect on tree recruitment by seed (2007, background): “The three small-seeded species dealt with here (pine, black spruce, aspen) are dependent upon thinner organic layers for successful germination, and this dependence is well established in the literature (e.g., Charron and Greene 2002; Purdy et al. 2002; Johnstone and Chapin 2006 ).”