Sawmill Creek Research Natural Area - USSML001 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/ Gayton, D.V, M.H. Weber, M. Harrington, E.K. Heyerdahl, E.K. Sutherland, B. Brett, C. Hall, M. Hartman, L. Peterson, C. Merrel. 2006. Fire history of a western Montana ponderosa pine grassland: a pilot study. Pages 30-36 in: Experiential Learning and Exploratory Research: The 13th Annual North American Dendroecological Fieldweek (NADF). ed. J. Speer. Indiana State University Depoartment of Geography, Geology, and Anthropology Professional Paper Series No. 23. 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 collected north (above) and south (below) unmarked road branching north off forest road 710, on southern and northwestern slopes of ridge between Haacke and Sawmill Creeks. Collected during 13th Annual Dendroecological Fieldweek, held at Lubrecht Experimental Forest, Montana, July 2003. Sample SML27 was Pseudostuga menzeisii, 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)) SML01,1,4,0,Pinus ponderosa,live,277801,5147876 SML02,1,7,0,Pinus ponderosa,live,277896,5147905 SML03,1,4,0,Pinus ponderosa,live,277884,5147949 SML04,1,4,0,Pinus ponderosa,live,278088,5147900 SML05,1,4,0,Pinus ponderosa,snag,277308,5147874 SML13,1,9,0,Pinus ponderosa,live,277580,5148112 SML16,1,7,0,Pinus ponderosa,live,278001,5147799 SML17,1,3,0,Pinus ponderosa,snag,277799,5147914 SML19,1,7,0,Pinus ponderosa,snag,277279,5147861 SML20,1,6,3,Pinus ponderosa,snag,277797,5147861 SML22,2,15,2,Pinus ponderosa,log,277706,5148010 SML24,1,25,0,Pinus ponderosa,log,277271,5147929 SML25,1,3,1,Pinus ponderosa,log,278027,5147868 SML26,1,7,2,Pinus ponderosa,live,277811,5147906 SML27,1,7,0,Pseudotsuga menziesii,stump,277777,5148293 SML28,1,14,0,Pinus ponderosa,stump,277781,5148297 SML29,1,6,2,Pinus ponderosa,live,277427,5148328 SML30,1,6,0,Pinus ponderosa,stump,277626,5148133 SML31,0,0,0,Pinus ponderosa,snag,278376,5147804 SML32,1,6,0,Pinus ponderosa,live,277759,5148062 SML33,1,6,0,Pinus ponderosa,live,277710,5147822 SML34,1,5,2,Pinus ponderosa,snag,277720,5147807 SML35,1,6,2,Pinus ponderosa,stump,277212,5148446 SML36,1,6,1,Pinus ponderosa,log,277343,5148593 SML37,1,3,1,Pinus ponderosa,live,277440,5148559 SML38,0,0,0,Pinus ponderosa,snag,277125,5148205 SML39,1,6,0,Pinus ponderosa,log,277281,5147859 SML40,0,0,0,Pinus ponderosa,stump,277309,5147928 SML44,1,9,0,Pinus ponderosa,live,277530,5147820 SML45,1,7,0,Pinus ponderosa,stump,277943,5147953 SML46,1,13,0,Pinus ponderosa,stump,277943,5147953 SML47,1,5,0,Pinus ponderosa,stump,277943,5147953 SML49,1,2,0,Pinus ponderosa,stump,-999,-999 SMLUNK,1,4,0,Pinus ponderosa,live,-999,-999 SMLUNK1,1,4,2,Pinus ponderosa,live,-999,-999 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.