Gartner fire data from Coal Creek II, Colorado Front Range - IMPD USMG-015 Gartner, M.H.; Sherriff, R.L.; Veblen, T.T.; Schoennagel, T.L. Gartner, M.H. Sherriff, R.L. Veblen, T.T. Schoennagel, T.L. PIPO Pinus ponderosa Douglas ex C. Lawson ponderosa pine western yellow pine PSME Pseudotsuga menziesii (Mirb.) Franco Douglas-fir earth science/paleoclimate/fire history earth science/paleoclimate/fire history (Coal Creek II - IMPD USMG-015>LATITUDE 39.875456>LONGITUDE -105.288294) This study examines the influence of grasslands on fire frequency and occurrence in the ponderosa pine (Pinus ponderosa)-dominated forests of the central and northern Colorado Front Range. Fire frequency based on tree-ring firescar data was compared between 34 fire history sites adjacent to grasslands and 34 fire history sites not adjacent to grasslands for the time period 1675 - 1920. Relationships were examined between fire occurrence and values of the Palmer Drought Severity Index and sea-surface temperatures from the NINO3 region of the tropical Pacific Ocean (positive values indicating El Nino-like conditions and negative values La Nina-like conditions). Ponderosa pine stands adjacent to grasslands experienced more frequent fire than stands not adjacent to grasslands (P,0.05) owing to proximity to prevalent fine fuels able to support relatively frequent surface fires. Fire activity adjacent to grasslands showed a lagged positive relationship with moist years (positive Palmer Drought Severity Index and positive NINO3) antecedent to fire events whereas fire occurrence at sites not adjacent to grasslands showed no relationship to antecedent moist years. This study illustrates how the presence of grasslands in a ponderosa pine landscape results in increased fire frequency (a bottom-up influence) and also increases the sensitivity of fire activity to interannual climate variability (a top-down influence). STUDY NOTES: This dataset was contributed as part of the Fire data from the Colorado Front Range 2014 research project (https://www.ncei.noaa.gov/access/paleo-search/study/17194). Data were contributed to the project from the original data generators. Sample Storage Location: Dating Method: Crossdated Related ITRDB_Chronology: Not Applicable Fire scar data from this site are available in FHX2 format at: https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usmg-015.fhx along with associated metadata at: https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usmg-015-noaa.txt Establishment date data from this site are available in CSV format at: https://www.ncei.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usmg-015.dat along with associated metadata at: https://www.ncei.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usmg-015-estab-noaa.txt NCEI-Paleoclimatology https://www.ncei.noaa.gov/products/paleoclimatology - NOAA World Data Service for Paleoclimatology Investigator : Gartner, M.H. Investigator : Sherriff, R.L. Investigator : Veblen, T.T. Investigator : Schoennagel, T.L. 2014-09-24 ONLINE Files online, ASCII https://www.ncei.noaa.gov/access/paleo-search/study/37404 https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usmg-015.fhx https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usmg-015-fhx-noaa.txt https://www.ncei.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usmg-015.dat https://www.ncei.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usmg-015-estab-noaa.txt https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usmg-015.fhx https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usmg-015-fhx-noaa.txt https://www.ncei.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usmg-015.dat https://www.ncei.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usmg-015-estab-noaa.txt English https://www.ncei.noaa.gov/access/paleo-search/study/37404 https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usmg-015.fhx https://www.ncei.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usmg-015-fhx-noaa.txt https://www.ncei.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usmg-015.dat https://www.ncei.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usmg-015-estab-noaa.txt Meredith H. Gartner, Thomas T. Veblen, Rosemary L. Sherriff, and Tania L. Schoennagel2012Proximity to grasslands influences fire frequency and sensitivity to climate variability in Pinus ponderosa forests of the Colorado Front RangeInternational Journal of Wildland Fire21562-57110.1071/WF10103 Sherriff, R.L., R.V. Platt, T.T. Veblen, T.L. Schoennagel, and M.H. Gartner2014Historical, observed, and modeled wildfire severity in montane forests of the Colorado Front RangePLoS ONE99e10697110.1371/journal.pone.0106971 START YEAR: 1732 CE * END YEAR: 2005 CE -105.288294 39.875456 -105.288294 39.875456