Black Hills Plot 105 - US105001 Additional Site Information Peter M. Brown Dating Method: Crossdated Sample Storage Location: Rocky Mountain Tree-Ring Research, Inc., Ft. Collins, CO Reference: Brown, P.M. 2001. Landscape Age Structure of Ponderosa Pine Stands, Limestone Plateau, Black Hills National Forest: Final Report. USDA Forest Service, Report CSS-11020399-23. A PDF copy of the text from this report is available at: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/supplemental/bh_age_finalreport_text.pdf A PDF copy of the figures from this report is avaialbe at: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/supplemental/bh_age_finalreport_figures.pdf Establishment date data from this site are available at: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/us105001.dat Comments: Twenty-eight of 31 trees were crossdated. Twenty-three of these trees (stumps, logs, and snags; bark dates on 3 stumps were in 1985 and on four were in 1955) dated to the late 1700s, with pith dates from 1769 to 1778. One stump had a pith date of 1757, a log dated to 1669, another log to 1616, and two snags dated to 1554 and 1555. Two of these latter trees dated through the middle 1700s and no unusual growth responses were noted on the sections. Fire scar dates include many of the common fire years. 1823 was recorded instead of 1822 (on two trees) and 1691 instead of 1692 (on one tree). 1863 was the most commonly recorded year, and two trees recorded scars in 1910. Site Diagram: The Site Chronology Diagram was provided by the investigator. Time spans of trees are represented by horizontal lines with dates of fire scars marked by inverted triangles. Dashed lines are estimated number of years to pith. Vertical lines to left on tree chronologies are pith dates with inside dates (i.e., unknown number of years to pith) marked by slanted lines. Vertical lines to right on tree chronologies are bark dates (= death dates) with outside dates (i.e., unknown number of years to death date) marked by slanted lines. Note that x-axis varies on chronologies. Fire History Graphs: Fire History Graphs illustrate specific years when fires occurred and how many trees were scarred. They are available in both PDF and PNG formats. The graphs consist of 2 parts, both of which show the X axis (time line) at the bottom with the earliest year of information on the left and the latest on the right. The Fire Index Plot is the topmost plot, and shows two variables: sample depth (the number of recording trees in each year) as a blue line along the left Y axis, compared with the percent trees scarred shown as gray bars along the right Y axis. Below, the Fire Chronology Plot consists of horizontal lines representing injuries by year on individual sampled trees. Symbols are overlain that denote the years containing the dendrochronologically-dated fire scars or injuries. The sample ID of each tree is displayed to the right of each line. The Composite Axis below represents the composite information from all individual series. The symbols used to represent the fire scars or injuries, and the filters used to determine the composite information, are shown in the legend. These graphs were created using the Fire History Analysis and Exploration System (FHAES). See http://frames.nbii.gov/fhaes/ for more information.