Effect of Injury by Porcupines on Radial Growth of Ponderosa Pine
Radial growth was reduced in ponderosa pines (Pinus ponderosa Laws.) growing in a plantation and injured by porcupines (Erethizon dorsatum L.). The most significant reduction in radial growth occurred in completely girdled trees. Reductions in radial growth in scarred trees were most pronounced during the first and second years after scarring, but the mean difference in radial growth between scarred and unscarred trees was not significant the fifth year after scarring.
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Document Type: Journal Article
Affiliations: Wildlife Research Biologist, Bureau of Sport Fisheries and Wildlife, U. S. Department of the Interior, Missoula, Montana
Publication date: 1967-10-01
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