Corona Road - USCOR001 Additional Site Information Emily K. Heyerdahl, Penelope Morgan, James P. Riser II 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. Heyerdahl, Emily K.; Morgan, Penelope; Riser, James P., II. 2008. Crossdated fire histories (1650-1900) from ponderosa pine-dominated forests of Idaho and western Montana. Gen. Tech. Rep. RMRS-GTR-214WWW. Fort Collins, CO: US Department of Agriculture, Forest Service, Rocky Mountain Research Station. 83 p. Available from TreeSearch: http://www.treesearch.fs.fed.us/ Abstract: This site is part of 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. We needed a multicentury record of widespread fires across the region to meet the objectives of our broader study and therefore we targeted sites historically dominated or co-dominated by ponderosa pine that historically sustained frequent surface fires. 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 assigned ring-boundary scars to the preceeding calendar year at this site. Comments: Samples from west and north of county road 1025 were it crosses section 1 and east of unmarked logging road at hairpin turn. Samples COR10, COR13 and COR17 were Larix occidentalis, 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 11),UTM-N (NAD27, zone 11)) COR01,2,17,1,Pinus ponderosa,stump,660431,5273986 COR02,2,31,1,Pinus ponderosa,stump,660453,5273986 COR03,2,14,1,Pinus ponderosa,stump,660479,5273999 COR04,1,7,1,Pinus ponderosa,stump,660502,5274024 COR05,2,16,1,Pinus ponderosa,stump,660514,5274028 COR06,4,19,2,Pinus ponderosa,stump,660527,5274069 COR07,2,10,0,Pinus ponderosa,stump,660545,5274107 COR08,1,5,0,Pinus ponderosa,stump,660552,5274104 COR09,3,25,4,Pinus ponderosa,stump,660616,5274038 COR10,1,13,0,Larix occidentalis,stump,660616,5274038 COR11,2,17,1,Pinus ponderosa,stump,660541,5274000 COR12,2,22,1,Pinus ponderosa,stump,660539,5273994 COR13,3,15,11,Larix occidentalis,stump,660498,5273994 COR14,1,8,0,Pinus ponderosa,log,660559,5273889 COR15,4,50,5,Pinus ponderosa,stump,660563,5273886 COR16,3,33,0,Pinus ponderosa,stump,660585,5273876 COR17,1,16,2,Larix occidentalis,log,660585,5273875 COR18,1,7,1,Pinus ponderosa,stump,660585,5273875 COR19,1,7,1,Pinus ponderosa,log,660580,5273819 COR20,2,19,1,Pinus ponderosa,stump,660527,5273838 COR21,2,14,0,Pinus ponderosa,stump,660505,5273848 COR22,1,17,1,Pinus ponderosa,stump,660510,5273859 COR23,2,17,3,Pinus ponderosa,log,660488,5273906 COR24,1,6,1,Pinus ponderosa,stump,660486,5273911 COR25,1,5,2,Pinus ponderosa,stump,660484,5273909 COR26,1,7,0,Pinus ponderosa,stump,660466,5273905 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.