The Role of Microsite Conditions in Restoring Trembling Aspen (Populus tremuloides Michx) from Seed |
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Authors: | Kaitlin M Schott Justine Karst Simon M Landhäusser |
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Institution: | 1. H. T. Harvey & Associates, , Los Gatos, CA, 95032 U.S.A.;2. Department of Renewable Resources, University of Alberta, , Edmonton, Alberta, T6G 2E3 Canada |
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Abstract: | Encouraging natural regeneration of Populus tremuloides Michx (trembling aspen) from seed is a largely unexplored means for reintroducing the species into reclamation areas. We evaluated the effects of microsite (surface contour and substrate type) on aspen seedling establishment and growth on a reclaimed coal mine. The 4.6 ha study site was divided into six 48 m‐wide strips that had 15 or 40 cm capping material salvaged from a nearby forest floor added to the mine surface. We surveyed 126 m long transects located in the center of each strip for microsite conditions, and the presence and height of aspen seedlings. We found that aspen seedlings generally preferred mineral‐organic substrates and concave microsites. To facilitate the regeneration of aspen by seed, we suggest that land managers increase small‐scale roughness and microtopographic diversity on reclaimed sites . |
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Keywords: | microtopography natural regeneration organic material seedling establishment substrate |
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