Once burned, twice shy: repeat fires reduce seed availability and alter substrate constraints on Picea mariana regeneration
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Published source details
Brown C.D. & Johnstone J.F. (2012) Once burned, twice shy: repeat fires reduce seed availability and alter substrate constraints on Picea mariana regeneration. Forest Ecology and Management, 266, 34-41.
Published source details Brown C.D. & Johnstone J.F. (2012) Once burned, twice shy: repeat fires reduce seed availability and alter substrate constraints on Picea mariana regeneration. Forest Ecology and Management, 266, 34-41.
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This study is summarised as evidence for the following.
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Use prescribed fire: effects on young trees Action Link |
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Use prescribed fire: effects on young trees
A site comparison study in 1994-2007 in subarctic boreal forest in Yukon Territory, Canada (Brown & Johnstone 2012) found that prescribed burning with long intervals between burns increased the density of black spruce Picea mariana seedlings. The density of seedlings was higher following burns with long intervals between (8.3 seedlings/m2) than with short intervals between burns and mature forest sites (0.6 seedlings/m2 in both). Eight 30 × 30 m plots were established within each of three fire history sites: mature forest (previous fire about 77 years ago); long interval between burns (fire in 2005) and short intervals between burns (fire in both 1990/91 and 2005). Seedlings were counted in ten 0.25 m2 subplots in each plot in 2008, 2009 and 2010.
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