Black Hills Plot 112 - US112001 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/us112001.dat Comments: Twenty-five of 30 trees were dated from this plot. One tree that could not be dated was aspen. Living trees in the stand all dated to the latter 1800s to early 1900s. The bulk of the pre- settlement trees were a mix of logs and snags with 3 stumps that had piths between 1544 and 1554. Another two stumps and a log dated between 1615 and 1622. Fire scars were recorded on many of the remnants with most of the usual fire dates represented, although there was a gap in dates between 1785 (recorded on only one tree) and a cluster of dates in the latter 1800s starting at 1858. However, this may be due to sample depth during this period, with only 5 trees. 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.