Silvicultural Options Study: plot locations, tree growth, tree regeneration, and understory species abundance

Research Data Publication File Index

File Folder Description
_metadata_RDS-2022-0055.html   Metadata file in HTML format containing a description of the content, quality, and other characteristics of the data.
_metadata_RDS-2022-0055.xml   Metadata file in Extensible Markup Language (XML) format containing a description of the content, quality, and other characteristics of the data.
_variable_descriptions.csv \Data Comma-separated values (CSV) file containing a list and description of the variables provided in each data file in this package, as well as precision and formatting information.
SOS_comment_codes.csv \Data CSV file containing a list and description of the comment codes used in the tree growth data file.
SOS_damage_codes.csv \Data CSV file containing a list and descriptions of damage and severity codes used in the tree growth and regeneration data files.
SOS_latitude_longitude_data.csv \Data CSV file containing the geographic coordinates of the center of each plot.
SOS_patch_status_data.csv \Data CSV file containing assessments for the patches or groups silvicultural regimes of whether each quadrant or satellite subplot of a given 0.2-acre measurement plot was inside, partially inside, or outside of a harvested area.
SOS_precut_dbh_data.csv \Data CSV file containing survival status and diameter at breast height (dbh) measurements of trees (dbh ≥ 1.6 inches) within each measurement plot of the patches, groups, or thinning silvicultural regimes taken in the dormant season prior to a given harvest.
SOS_reference_tree_data.csv \Data CSV file containing listings of dbh and species for up to three dominant trees or stumps per measurement plot, as well as tree or stump distance and azimuth from plot center, to assist with re-locating plot center following the disturbances associated with harvesting.
SOS_selected_plots.csv \Data CSV file containing a list of the 308 measurement plots (out of a total of 420 plots) that were monitored consistently during the first two decades of the study.
SOS_species_codes.csv \Data CSV file containing a list and description of species codes used in the data files.
SOS_tree_growth_data.csv \Data CSV file containing measurements of dbh, height, height to base of live crown, species, and survival/damage status for trees ≥ 1.6 inches dbh located within the measurement plots. Data also include early measurements of stem diameter and decay status for standing and downed dead trees.
SOS_tree_regen_data.csv \Data CSV file containing measurements of stem diameter in inches at 6 inches above ground (d6in), dbh, height, species, origin (i.e., planted versus natural regeneration) and damage status for tree regeneration (dbh < 1.6 inches). Data include a complete census of all planted Douglas-fir, plus measurements for the tallest two tree seedlings per satellite subplot regardless of species.
SOS_understory_veg_data.csv \Data CSV file containing visual estimates of percentage cover and average height for each understory species having ≥ 10% cover.
SOS_maps_Blue_Ridge.pdf \Supplements Portable Document Format (PDF) file containing diagrams of plot locations and treatments at the Blue Ridge site.
SOS_maps_Copper_Ridge.pdf \Supplements PDF file containing diagrams of plot locations and treatments at the Copper Ridge site.
SOS_maps_Rusty_Ridge.pdf \Supplements PDF file containing diagrams of plot locations and treatments at the Rusty Ridge site.
SOS_study_plan.pdf \Supplements PDF file containing the 1997 study plan for the Silvicultural Options Study: "Silvicultural options for harvesting young-growth production forests" by Robert O. Curtis, Gary W. Clendenen, Dean S. DeBell, John Shumway, Jeff DeBell, and Tom Poch.