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High and dry: post-fire tree seedling establishment in subalpine forests decreases with post-fire drought and large stand-replacing burn patches

Author(s): Brian J. Harvey, Daniel C. Donato, Monica G. Turner
Year Published: 2016
Description:

Total post-fire tree seedling establishment (all species combined) declined sharply with greater post-fire drought severity and with greater distance to seed sources (i.e. the interior of burn patches). Effects varied among key species groups. For conifers that dominate present-day subalpine forests (Picea engelmannii, Abies lasiocarpa), post-fire seedling establishment declined sharply with both factors. One exception was serotinous Pinus contorta, which did not vary with either factor. For montane species expected to move upslope under future climate change (Larix occidentalis, Pseudotsuga menziesii, Populus tremuloides) and upper treeline species (Pinus albicaulis), establishment was unrelated to either factor. Greater post-fire tree seedling establishment on cooler/wetter aspects suggested local topographic refugia during post-fire droughts.

Citation: Harvey, B.J.; Donato, D.C.; Turner, M.G. 2016. High and dry: post-fire tree seedling establishment in subalpine forests decreases with post-fire drought and large stand-replacing burn patches. Global Ecology and Biogeography. DOI: 10.1111/geb.12443
Topic(s): Fire Effects, Ecological - Second Order, Vegetation
Ecosystem(s): Subalpine wet spruce-fir forest, Subalpine dry spruce-fir forest
Document Type: Book or Chapter or Journal Article
NRFSN number: 14103
Record updated: Mar 22, 2018