Lava Beds National Monument, Caldwell Butte - USLBC001
Additional Site Information

Emily K. Heyerdahl, Richard F. Miller

Dating Method: Crossdated

Sample Storage Location: Lava Beds National Monument

Abstract: Our objective was to determine if historical fire regimes varied 
at fine spatial scales across a 4000 ha area in Lava Beds National Monument.  
To do this, we inferred historical fire regimes from tree rings (fire scars 
on ponderosa pine trees and establishment or death dates of western juniper 
trees), soil characteristics, and/or a model of the rate of post-fire 
succession that we developed by measuring current vegetation along a 
chronosequence of time-since-fire plots in the study area.

Individual Tree Information (tree id, number of samples dated, number of 
scars dated, description, UTM-easting (NAD83, zone 10), UTM-northing (NAD83, 
zone 10), comments):
LBCW1,1,2,log,625948,4618028,
LBCW2,1,3,snag,625988,4618063,
LBCW3,1,8,snag,626028,4618073,
LBCW4,2,15,snag,626055,4618086,
LBCW6,2,9,snag,626072,4618050,
LBCW7,1,6,snag,626017,4618031,
LBCW8,1,5,log,626005,4618005,
LBCW10,1,2,log,626022,4617973,
LBCW11,1,6,log,626066,4618010,
LBCW13,1,4,snag,626118,4617983,
LBCE15,1,13,log,626282,4618069,
LBCE16,0,0,snag,626310,4618018,did not crossdate
LBCE17,1,15,snag,626375,4618069,
LBCE18i,2,11,log,626384,4618078,
LBCE20,1,5,snag,626460,4618077,
LBCE21,2,7,log,626469,4618109,
LBCE22,2,21,snag,626380,4617985,
LBCE23,1,17,snag,626419,4617997,
LBCE24,1,6,snag,626456,4617994,
LBCE25,1,6,snag,626474,4617979,
LBCE26,2,8,log,626491,4617977,
LBCE27,1,6,snag,626514,4617936,
LBCE30,2,10,snag,626556,4617927,
LBCE31,1,11,snag,626475,4617878,
LBCE32,1,4,log,626445,4617860,
LBCE33,1,4,snag,626536,4617831,
LBCE34,3,15,snag,626522,4617770,
LBCE36,1,14,snag,626458,4617731,
LBCE39,1,5,snag,626716,4617926,
LBCE40,1,5,snag,626385,4617962,
LBCE45,1,6,snag,626679,4617898,

CORRECTION TO DATA: On June 1, 2021, corrections were made to data file 
uslbc001.fhx. REASONING: for sample LBCW03 (column 3) from 1919 to 1926 
data values '|' (recorder year ) from 1919 - 1925, 
followed by data value ']' (bark) at 1926, 
were not valid because they were located after the end of a sequence,
which ended with symbol ']' (bark) at 1918,
CORRECTION: all symbols (1919 - 1926) were changed to '.' (non-recorder).  
The old data for for all columns follows:
.|||||.....|....|............. 1919
.|||}].....]....|............. 1920
.|||............|............. 1921
.||}............|............. 1922
.||.............|............. 1923
.||.............|............. 1924
.||.............|............. 1925
.]].............|............. 1926
The corrected data, for all columns, follows: 
(Note: only column 3 changed):
.|.|||.....|....|............. 1919
.|.|}].....]....|............. 1920
.|.|............|............. 1921
.|.}............|............. 1922
.|..............|............. 1923
.|..............|............. 1924
.|..............|............. 1925
.]..............|............. 1926

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://www.fhaes.org for more information.