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GROWTHCOMPETITION RELATIONSHIPS FOR TREES
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Acer saccharum analysis Average relative density backslopes Barnes basswood bitternut hickory black cherry canopy tree species Carya cordiformis dominant crown class driftless area early stand development ecological species groups ecosystem classification exposed crown area Figure forest ecosystem units former oak ground cover species hardwood forest ecosystem height growth patterns height growth rate intermediate crown class ironwood Kickapoo River watershed levels of competition light intensity loamy residuum loess loess and loamy Lorimer major species major upland hardwood mixed loess model predicts northern red oak oak forests oak Quercus overtopped parent material physiography plot predicted height growth predictors of height Quercus rubra red maple regeneration regression relative density relative height sample silvicultural slope position southwestern Wisconsin species composition species of unit specific levels stands on unit subject tree sugar maple Table tolerant species Ulmus rubra upland hardwood forest USDA vegetation white ash white oak young stands