Black Hills Plot 110 - US110001 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/us110001.dat Comments: Twenty-four of 30 trees were dated. Living trees were all young, extending from the early to late 1800s. Most trees dated to the early 1600s cohort, with most pith dates from 1605 to 1622. One pith date was at 1655 and 3 trees did not have pith. Fire scars were recorded on 3 trees at 1751 instead of usual dates of 1753 or 1756. Tree 28 recorded fire scars at 1676 and 1678 and was the only tree to record these two dates. It is very unusual to have fire dates this close together on a single tree, and especially when either of those dates was no recorded on other trees in the stand. 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.