Title:

Growth response data from overstory trees and planted Douglas-fir, western hemlock, and western redcedar after residual density treatments in Capitol State Forest, Washington

Author(s):

Brodie, Leslie C.

Publication Year:

2021

How to Cite:

These data were collected using funding from the U.S. Government and can be used without additional permissions or fees. If you use these data in a publication, presentation, or other research product please use the following citation:

Brodie, Leslie C. 2021. Growth response data from overstory trees and planted Douglas-fir, western hemlock, and western redcedar after residual density treatments in Capitol State Forest, Washington. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2021-0004

Abstract:

We conducted a study in conjunction with the Washington State Department of Natural Resources examining the response of overstory trees and under-planted conifer seedlings to a range of residual overstory densities. Conifer seedlings included Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), western hemlock (Tsuga heterophylla (Raf.) Sarg.), and western redcedar (Thuja plicata Donn ex D. Don). The study is comprised of three sites within the Capitol State Forest west of Olympia, Washington, each consisting of treatment plots of 1.4-1.5 hectares. Initially 40 to 70 years old, these stands were harvested in the summer of 2000 leaving six retention levels (treatments) of 0, 8, 16, 24, 32 and 40 percent of full basal area stocking. In each plot, 609 trees were planted in 2001 for a total of 10,962 understory trees. The number of overstory trees varies by site and year but were approximately 208, 139, and 136 at sites 1, 2, and 3, respectively. This publication contains data from seedling and overstory tree measurements taken in 2000, 2001, 2002, 2003, 2004, 2005, and 2009. Some years are subsets and do not include all trees. Measurements include height and diameter, along with other attributes such as height to live crown and any damages present. Also included are temperature data from years 2001-2006 and soil moisture data from 2001 and 2002.

Keywords:

biota; farming; Natural Resource Management & Use; Forest management; tree regeneration; tree growth; tree height; tree diameter; species; regeneration harvest; survival; regeneration; overstory tree retention; genetic provenance; understory; Washington; Capital State Forest

Related publications:

• Brodie, Leslie C.; DeBell, Dean S. 2013. Residual densities affect growth of overstory trees and planted Douglas-fir, western hemlock, and western redcedar: results from the first decade. Western Journal of Applied Forestry. 28(3): 121-127. https://research.fs.usda.gov/treesearch/45371 https://doi.org/10.5849/wjaf.12-019

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