Distribution and Changes in Abundance of Ailanthus altissima (Miller) Swingle in a Southwest Ohio Woodlot

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Title: Distribution and Changes in Abundance of Ailanthus altissima (Miller) Swingle in a Southwest Ohio Woodlot
Creators: Espenschied-Reilly, Amanda L.; Runkle, James R.
Issue Date: 2008-04
Citation: The Ohio Journal of Science, v108, n2 (April, 2008), 16-22.
Abstract: This study describes the population structure and dynamics of Ailanthus altissima within the Wright State University woodlot near Dayton, Ohio. This 80 ha woodlot contains both old growth and secondary stands. Ailanthus altissima populations were measured first in 1980 and again in 2001 and 2002. We examined changes in A. altissima demographics and patterns of occurrence by examining secondary environmental factors that could have influenced invasion and survival. Ailanthus altissima was found in 13.5% of the plots (500m2 each) and had a density of 198.4 stems/ha, an increase from 1980. Although usually at low densities within the interior, occasional high density patches occurred. Tree cores dated the initial invasion of A. altissima before 1940. e number of A. altissima stems and the basal area of A. altissima decreased with increased distance from the woodlot edge. Percent annual survivorship was 42% overall and survivorship was negatively correlated with distance from the woodlot edge. Surviving understory stems have the potential to enter the canopy in the future. The presence of A. altissima along the woodlot perimeter was not related to aspect. Ailanthus altissima successfully invaded both the old and secondary growth sections of the woodlot, with its biggest influence on the woodlot edge, where it frequently dominated areas. A smaller presence in the woodlot interior is maintained presumably due to seedling success in canopy gaps and the formation of persistent clumps of clonal sprouts around canopy trees.
Description: Author Institution: Department of Biological Sciences, Wright State University
URI: http://hdl.handle.net/1811/48375
ISSN: 0030-0950
Rights: Reproduction of articles for non-commercial educational or research use granted without request if credit to The Ohio State University and The Ohio Academy of Science is given.
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