Title:

Initial spacing influences 20-year growth and development of red alder

Author(s):

Harrington, Constance A.

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:

Harrington, Constance A. 2021. Initial spacing influences 20-year growth and development of red alder. Fort Collins, CO: Forest Service Research Data Archive. https://doi.org/10.2737/RDS-2021-0081

Abstract:

Red alder (Alnus rubra)(Bong.) seedlings were planted in northwestern Oregon in the winter of 1974-1975 at five spacings ranging from 0.6 × 1.2 meters (m) to 2.5 × 2.5 m. The four narrower spacing treatments were planted in a completely random design on 0.04-hectare (ha) plots at exact spacings. Two other plots came from an adjacent area that was used for a test of red alder as a biological control for laminated root rot and planted at an approximate spacing of 2.5 × 2.5 m. There were originally 7 plots in this study, and 2 additional plots from an adjacent area were also included because they were planted at the same time with the same stock. This data publication contains data such as tree diameter, height, base to live crown, and tree condition which were measured multiple times between 1981 and 1994. In 1990 live and dead branches were counted as well as the count of live epicormic branches and presents of dead epicormic branches. Also included is monthly precipitation data for a nearby NOAA weather station.

Keywords:

farming; Natural Resource Management & Use; Forest management; red alder; Alnus rubra; tree growth; stand growth; tree height; tree diameter; mortality; basal area; volume; spacing trial; rectangularity; northwestern Oregon; Columbia County; Oregon Coast Range

Related publications:

• DeBell, Dean S.; Harrington, Constance A. 2002. Density and rectangularity of planting influence 20-year growth and development of red alder. Canadian Journal of Forest Research. 32(7): 1244-1253. https://doi.org/10.1139/x02-040 https://research.fs.usda.gov/treesearch/4735

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