Factors influencing stump sprouting by pondcypress (Taxodium distichum var. nutans (Ait.) Sweet) |
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| Authors: | Email author" target="_blank">Cotton?K?RandallEmail author Mary?L?Duryea Susan?W?Vince R?Jeffery English |
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| Institution: | (1) School of Forest Resources and Conservation, University of Florida, P.O. Box 110410, 32611-0410 Gainesville, Gainesville, USA |
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| Abstract: | Sprouting can be an important mechanism of regeneration in harvested cypress (Taxodium sp.) wetlands; however, limited information exists on factors influencing sprouting. We examined the influence of harvesting practices, tree size, and site conditions on stump sprouting in eight pondcypress (Taxodium distichum var. nutans (Ait.) Sweet) wetlands in Florida, USA. Stumps were cut at three heights: 20 cm below high water level, at high water, and 40 cm above high water. Half of each site was harvested using a sawhead feller and the other half using shearhead. We monitored sprouting for 2 years post-harvest. Stump height affected first year sprouting, but the effect disappeared during year 2. Felling equipment did not affect sprouting; however, the shearhead caused greater stump damage. Sprouting declined with increasing parent tree size; percentage of stumps with sprouts after 2 years was 68% for trees 10–14 cm dbh and 28% for trees 20–24 cm dbh. Stump sprouting ranged among sites from 23 to 54% after 2 years. Results indicate that sprouting may be an important, but inadequate, form of regeneration. At sites with short hydroperiods, dense understories, and/or predominance of trees greater than 20 cm dbh, reduced sprouting may occur, and planting seedlings may be beneficial. |
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| Keywords: | Forest management Harvesting technique Regeneration Southeastern United States Wetland forests |
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