Beech bark disease: spatial patterns of thicket formation and disease spread in an aftermath forest in the northeastern United States
作者： Lisa M. Giencke , Martin Dovčiak , Giorgos Mountrakis , Jonathan A. Cale , Myron J. Mitchell
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摘要: Beech bark disease (BBD) has affected the composition, structure, and function of forests containing a significant proportion American beech (Fagus grandifolia Ehrh.) across North America. BBD spread been investigated at landscape regional scales, but few studies have examined spatial patterns severity within stands where forest management mitigation measures can be implemented. We analyzed changes in composition between 1985 2009 fine-scale 2000 ∼2 ha northern hardwood stand Adirondack Mountains New York using location trees. A bivariate point pattern analysis was implemented to examine thicket formation saplings. Abundance saplings increased near highly diseased canopy trees around dead sugar maple (Acer saccharum Marsh.). Disease highest close proximity hig...
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