Pocket Gophers Girdle Large True Firs in Northeastern California
Serious damage to trees by pocket gophers is thought to be limited to those less than 5 inches (12.7 cm) in diameter at breast height (d.b.h.). This article reports the first known instance of high mortality of large true firs -- up to 36.9 inches (93.7 cm) d.b.h. -- caused by pocket gophers and evidence of heavy and repeated feeding on major roots of mature trees.
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Author(s): Rob Gross, Robert James Laacke
Publication: Tree Planters' Notes - Volumes 35, Number 2 (1984)
Section: General
Volume: 35
Number: 2
