Lubrecht Experimental Forest - USLUB001
Additional Site Information

Lucas A. Jones, Emily K. Heyerdahl

Dating Method: Crossdated

Sample Storage Location: USDA Forest Service, Rocky Mountain Research Station
Fire Sciences Lab
5775 West Highway 10
Missoula, MT  59808
stored by Emily K. Heyerdahl (eheyerdahl@fs.fed.us, 406-829-6939)

Reference: Heyerdahl, E.K., P. Morgan, and J.P. Riser II. 2008. Multi-season
climate synchronized historical fires in dry forests (1650-1900), Northern
Rockies, USA. Ecology 89(3): 705-716.

Abstract: These samples were collected and crossdated by Lucas A. Jones for
his senior thesis at the University of Montana.  However, we used a subset of
them (LUB09, LUB10, LUB11, LUB12, LUB13, LUB14, LUB19, LUB20, LUB23, LUB26,
LUB27, LUB28, LUB29, LUB30, LUB31, LUB35, LUB36, LUB37, LUB39, and LUB41) in a
broader project to infer the climate drivers of regional fire years in the US
northern Rockies, i.e., Idaho and Montana west of the Continental Divide.
Tree locations were determined using handheld global position system
receivers.  Injuries in the FHX file include both eroded scars (i.e., ones for
which much or all of the overlapping, curled woundwood rings were destroyed by
subsequent fires or rot) and abrupt changes in the width of annual rings that
were synchronous with fire scars on other trees at this sites.  We generally
assigned ring-boundary scars to the preceding calendar year at this site.
However, for one fire scars occurred in the earlywood of most trees but on the
preceding ring boundary of another.  We inferred that the scars in both
positions were created by a single fire burning early in the growing season
and therefore re-assigned the ring-boundary scar to the following calendar
year, in other words, the same year as the earlywood scars (tree LUB13,
original year:  1782D, re-assigned year:  1783D).

Comments: Collected by Lucas A. Jones for his senior thesis in the College of
Forestry and Conservation, University of Montana
Sample LUB58 was Pseudotsuga menziesii, the rest were Pinus ponderosa.

Individual Sample Information:
(tree_ID,number of samples dated,number of scars dated,number of injuries 
dated,species,live?,UTM-E (NAD27, zone 12),UTM-N (NAD27, zone 12),
diameter_inches,cut_height_feet,elevation_meters,aspect,slope_degrees)
LUB03,1,5,2,Pinus ponderosa,stump,315795,5195951,2.4,0.5,1295,270,15
LUB04,1,4,2,Pinus ponderosa,snag,315825,5195965,2.5,0.6,1312,283,15
LUB05,1,8,2,Pinus ponderosa,stump,315849,5195956,1.7,0.3,1312,280,10
LUB06,1,9,0,Pinus ponderosa,stump,315839,5195983,1.6,1.2,1312,280,5
LUB08,1,6,0,Pinus ponderosa,snag,315574,5195812,2.6,3.2,1305,312,5
LUB09,1,9,0,Pinus ponderosa,stump,315553,5195512,2.0,0.4,1329,343,3
LUB10,1,8,3,Pinus ponderosa,stump,315593,5195551,2.1,1.8,1320,343,5
LUB11,1,6,1,Pinus ponderosa,stump,315625,5195337,3.0,1.3,1319,25,5
LUB12,1,6,3,Pinus ponderosa,stump,315609,5195369,-999,0.8,1327,25,5
LUB13,1,12,1,Pinus ponderosa,snag,315422,5195209,2.8,0.3,1332,325,10
LUB14,1,15,1,Pinus ponderosa,stump,315462,5195365,3.3,0.8,1334,315,15
LUB19,1,3,0,Pinus ponderosa,stump,315412,5195580,0.8,1.9,1320,270,10
LUB20,1,1,2,Pinus ponderosa,stump,315456,5195588,1.8,0.2,1326,350,5
LUB23,1,2,0,Pinus ponderosa,snag,315430,5195404,1.8,1.5,1334,290,10
LUB26,1,5,2,Pinus ponderosa,stump,315155,5195594,2.4,0.7,1302,300,2
LUB27,1,10,1,Pinus ponderosa,stump,315093,5195645,2.2,0.8,1301,300,2
LUB28,1,4,1,Pinus ponderosa,stump,315037,5195631,3.3,1.6,1301,320,2
LUB29,1,4,2,Pinus ponderosa,snag,315079,5195531,1.1,1.3,1305,300,2
LUB30,1,8,1,Pinus ponderosa,stump,314833,5195655,2.3,0.4,1295,320,2
LUB31,1,8,0,Pinus ponderosa,stump,314752,5195606,2.8,1.5,1289,290,5
LUB35,1,3,2,Pinus ponderosa,stump,313941,5195492,2.1,1.4,1293,320,2
LUB36,1,9,0,Pinus ponderosa,stump,313807,5195704,2.8,1.5,1278,320,2
LUB37,1,3,3,Pinus ponderosa,stump,313781,5195744,2.6,0.1,1278,320,2
LUB39,1,6,1,Pinus ponderosa,stump,313604,5195606,2.3,0.6,1280,320,5
LUB41,1,12,4,Pinus ponderosa,stump,313512,5195459,2.4,0.4,1255,-999,0
LUB43,1,9,1,Pinus ponderosa,snag,311259,5195553,1.9,2.2,1255,150,5
LUB44,1,2,3,Pinus ponderosa,stump,311233,5195565,-999,0.2,1274,150,5
LUB45,2,9,2,Pinus ponderosa,stump,311190,5195609,2.3,0.3,1304,150,5
LUB46,1,8,1,Pinus ponderosa,stump,311127,5195593,3.2,0.4,1307,125,5
LUB48,1,7,1,Pinus ponderosa,stump,311077,5195572,3.2,1.2,1314,125,10
LUB49,1,13,0,Pinus ponderosa,log,310794,5195611,1.7,-999,1325,170,10
LUB50,1,7,0,Pinus ponderosa,stump,310782,5195550,2.7,1.4,1320,170,5
LUB51,1,6,1,Pinus ponderosa,log,310285,5195723,1.9,-999,1347,220,15
LUB52,1,6,2,Pinus ponderosa,stump,310250,5195763,2.5,0.6,1286,220,15
LUB53,1,11,1,Pinus ponderosa,stump,310297,5195756,2.4,1.4,1363,220,15
LUB54,1,9,4,Pinus ponderosa,stump,310290,5195812,2.2,1.4,1363,220,15
LUB55,1,5,0,Pinus ponderosa,log,310236,5195781,-999,-999,1355,220,20
LUB56,1,3,1,Pinus ponderosa,stump,310270,5195842,1.7,1.0,1376,220,15
LUB58,1,9,0,Pseudotsuga menziesii,log,310207,5195878,2.3,-999,1386,180,15
LUB59,1,9,0,Pinus ponderosa,stump,310196,5195836,-999,0.2,1383,180,15
LUB60,1,4,1,Pinus ponderosa,snag,309726,5196068,1.8,1.3,1396,190,25
LUB61,1,13,3,Pinus ponderosa,stump,309723,5196090,2.4,1.2,1399,190,25
LUB62,1,7,0,Pinus ponderosa,live,309695,5196082,1.8,0.9,1433,180,25
LUB64,1,3,0,Pinus ponderosa,live,309675,5196160,1.3,1.1,1423,190,25
LUB65,1,29,4,Pinus ponderosa,stump,309777,5196063,2.0,0.4,1400,180,10
LUB68,1,10,1,Pinus ponderosa,snag,309726,5196068,1.8,1.3,1396,190,25

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.