Distribution pattern of entry holes of the tree-killing bark beetle Polygraphus proximus
Data files
Feb 17, 2021 version files 9.46 KB
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Bark_thickness.xlsx
Abstract
Methods
We cut down two A. veitchii trees at Yatsugatake Forest Station, Mountain Science Center, University of Tsukuba, in Minamisaku County, Nagano Prefecture, Japan on July 7, 2020, and immediately peeled the bark. We randomly selected 18 knots and measured the phloem thickness of rough bark around the knots and that of the remaining bark near the knots.