Twenty Mile Aspect Polygon 2 - USTWM002
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 Each of the 13 subsites have been 
archived separately using the following filenames (with ".fhx" appended 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))
A4,Pinus ponderosa,18,snag,48.687791439,-120.127482035
A5,Pinus ponderosa,18,live,48.687808705,-120.128173654
D37,Pinus ponderosa,28,cut stump,48.689206290,-120.127575342
D38,Pinus ponderosa,33,cut stump,48.688971428,-120.127357026
D39,Pinus ponderosa,30,live,48.688288622,-120.127396199
D40,Pinus ponderosa,17,cut stump,48.688091058,-120.127234247
D41,Pinus ponderosa,20,live,48.690346178,-120.127279399
P163,Pinus ponderosa,16,cut stump,48.681762280,-120.128535732
P164,Pinus ponderosa,23,cut stump,48.680439342,-120.128885903
P165,Pinus ponderosa,24,live,48.677516499,-120.129840391
P166,Pinus ponderosa,30,live,48.677356349,-120.129730569
P167,Pinus ponderosa,13,cut stump,48.677654159,-120.129044074
P174,Pinus ponderosa,32,live,48.686758677,-120.127925879
P48,Pinus ponderosa,22,cut stump,48.671601146,-120.134557281
P93,Pinus ponderosa,19,live,48.680480745,-120.127835386

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.