Twenty Mile Aspect Polygon 8 - USTWM008
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 Each of the 13 subsites have been 
archived separately using the following filenames (with ".fhx" appended 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))
A15,Pinus ponderosa,32,cut stump,48.670139806,-120.107605041
A16,Pseudotsuga menziesii,12,log,48.668867629,-120.101030442
A17,Pinus ponderosa,30,cut stump,48.668377726,-120.099261393
D73,Pinus ponderosa,24,live,48.663072778,-120.102087760
D74,Pinus ponderosa,35,snag,48.662925327,-120.102481879
D75,Pinus ponderosa,34,log,48.662798695,-120.103886251
K23,Pseudotsuga menziesii,26,live,48.664033627,-120.094513731
K24,Pinus ponderosa,30,live,48.662814251,-120.100753397
K25,Pinus ponderosa,37,live,48.660607136,-120.106904169
P106,Pinus ponderosa,34,live,48.668457497,-120.110482785
P107,Pinus ponderosa,18,snag,48.667859444,-120.109058872
P108,Pinus ponderosa,27,snag,48.667800305,-120.108678702
P109,Pinus ponderosa,26,live,48.667730924,-120.105918432
P110,Pinus ponderosa,29,live,48.667889753,-120.105970474
P111,Pinus ponderosa,18,live,48.668345815,-120.108187254
P112,Pinus ponderosa,18,live,48.668515865,-120.108867098
P136,Pinus ponderosa,17,snag,48.669950807,-120.107604338
P137,Pinus ponderosa,34,live,48.667406140,-120.103020965
P138,Pinus ponderosa,22,live,48.667551144,-120.102706613
P139,Pinus ponderosa,24,live,48.669296769,-120.101454516
P140,Pinus ponderosa,26,snag,48.669485405,-120.100907005
P141,Pinus ponderosa,26,live,48.669756856,-120.101504767
P202,Pinus ponderosa,20,live,48.668594335,-120.101255001
P203,Pinus ponderosa,35,live,48.667325945,-120.100550239
P204,Pinus ponderosa,28,snag,48.667197622,-120.100812593
P251,Pinus ponderosa,19,live,48.663065624,-120.105558210
P54,Pinus ponderosa,30,snag,48.666750191,-120.091639324

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.