Twenty Mile Aspect Polygon 13 - USTWM013
Additional Site Information

Richard L. Everett, Richard Schellhaas, Don Spurbeck, Pete Ohlson, Dave Keenum


Dating Method: Crossdated

Reference: Everett, R. L., R. Schellhaas, D. Keenum, D. Spurbeck and P. Ohlson.
2000. Fire history in the ponderosa pine/Douglas-fir forests on the east
slope of the Washington Cascades. Forest Ecology and Management
129:207-225. 

Hessl, A. E., McKenzie, D., and Everett, R. 2004. Fire and climatic
variability in the inland Pacific Northwest.  Ecological Applications
14:425-442. 

Comments: This is one of 13 separate aspect polygon subsites that make
up the larger 2,993 ha Twenty Mile site. Each of the 13 subsites have been 
archived separately using the following filenames (with ".fhx" appended 
for the FHX2 data files and ".txt" appended for the accompanying 
documentation files): ustwm001, ustwm002, ustwm003, ustwm004, ustwm005,
ustwm006, ustwm007, ustwm008, ustwm009, ustwm010, ustwm011, ustwm012, ustwm013.

Individual Tree Information: 
(Tree ID, Species, Diameter at Breast Height(cm), Status, Latitude(dd), Longitude(dd))
D70,Pinus ponderosa,25,live,48.698510617,-120.097833743
D71,Pinus ponderosa,30,live,48.698528980,-120.097671302
K20,Pinus ponderosa,20,live,48.698736885,-120.097529049
P118,Pseudotsuga menziesii,35,snag,48.689094976,-120.074210630
P13,Pinus ponderosa,31,live,48.701860591,-120.110643078
P14,Pinus ponderosa,30,live,48.701737968,-120.109882291
P15,Pinus ponderosa,21,live,48.701023649,-120.107772165
P16,Pinus ponderosa,24,cut stump,48.699597513,-120.103476482
P210,Pinus ponderosa,32,cut stump,48.700639898,-120.105927396
P240,Pinus ponderosa,32,live,48.697505240,-120.091686556
P241,Pinus ponderosa,27,live,48.697601874,-120.091415993
P242,Pinus ponderosa,30,log,48.699161143,-120.079442217
P243,Pinus ponderosa,28,live,48.698586304,-120.078945515
P244,Pinus ponderosa,40,live,48.698673469,-120.078303160
P64,Pinus ponderosa,28,snag,48.699388879,-120.067163350
R127,Pinus ponderosa,24,live,48.693861153,-120.100421575

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.