Methods for Determining the Number of Leaf-Clusters on Sugar Maple
Abstract:Leaf-clusters on 55 pole-sized sugar maples from 3 northern hardwood stands near Tully, N.Y., were evenly distributed throughout each of three crown levels. Less than 7 percent of the clusters occurred on tree boles or the bases of large branches. Mean number of leaves per cluster (4-5) increased significantly (0.4 leaf) in the upper half of the crown between June and August. In August, cluster size was significantly greater (0.6 leaf) in the upper crown than the lower crown. Results from two of three samples in Tully and a sample of 12 trees in Wanakena, N.Y., indicated that total number of leaf-clusters can be estimated using tree diameter or a combination of diameter, height, and crown size. Branch diameter was closely correlated with number of leaf-clusters. The allometric equation Y = b0 + b1xb described this relationship. The results are useful to those studying insect and arthropod populations on sugar maple trees. Forest Sci. 22:412-416.
Document Type: Journal Article
Affiliations: Associate Professor, Department of Entomology, State University College of Environmental Science and Forestry, Syracuse, N.Y. 13210
Publication date: December 1, 1976
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