Yocom fire data from Rancho Nuevo, Sierra Madre Oriental, Coahuila, Mexico - IMPD MXRN-001 Yocom, L.L.; Fulé, P.Z. Yocom, L.L. Fulé, P.Z. PISF Pinus strobiformis Engelm. southwestern white pine PIHR Pinus hartwegii Lindl. Mexican Mountain pine PSME Pseudotsuga menziesii (Mirb.) Franco Douglas-fir earth science/paleoclimate/fire history|tree ring (tree demographic and injury and fire event code,wood,null,null,null,fire history|tree ring,null,null,C,FHX2 data format; refer to IMPD documentation for description of codes) earth science/paleoclimate/fire history|tree ring (age,null,null,null,null,fire history|tree ring,null,null,N,null) earth science/paleoclimate/fire history (Rancho Nuevo, Coahuila>LATITUDE 25.43>LONGITUDE -100.53) We investigated the influence of broad- v. fine-scale factors on fire in an unusual landscape suitable for distinguishing the drivers of fire synchrony. Our study was conducted in the Sierra Madre Oriental mountain range, in north-eastern Mexico. We worked in nine sites on three parallel mountains that receive nearly identical broad-scale climatic influence, but between which fires are unlikely to spread. We collected and cross dated samples from 357 fire-scarred trees in nine sites in high-elevation mixed-conifer forests and identified fire dates. We used Jaccard similarity analysis to evaluate synchrony among sites and quantified relationships between climate and fire occurrence. Fires were historically frequent (mean fire interval ranged from 8 to 16 years in all sites) and dates of fire exclusion ranged from 1887 to 1962. We found low fire synchrony among the three mountains, indicating a strong influence of fine-scale factors on fire occurrence. Fire regime attributes were similar across mountains despite the independence of fire dates. La Niña events were associated with fire over time, although not significantly since the 1830s. Our results highlight the importance of scale in describing fire regimes and suggest that we can use fire history to understand controls on complex ecosystem processes and patterns. STUDY NOTES: This site was sampled as part of a project to reconstruct historical fire regimes in northeastern Mexico. Ring-boundary fire scars were assigned to the subsequent calendar year. 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://www.fhaes.org for more information. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Yocom, L.L. Investigator : Fulé, P.Z. 2017-03-03 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/21578 https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/mxrn-001.fhx https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/mxrn-001.txt https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/mxrn-001-fire-hist-graph.png https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/mxrn-001-fire-hist-graph.pdf https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/mxrn-001.fhx https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/mxrn-001.txt https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/mxrn-001-fire-hist-graph.png https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/mxrn-001-fire-hist-graph.pdf English https://www.ncdc.noaa.gov/paleo/study/21578 https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/mxrn-001.fhx https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/mxrn-001.txt https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/mxrn-001-fire-hist-graph.png https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/mxrn-001-fire-hist-graph.pdf Yocom, L.L., P.Z. Fulé, D.A. Falk, C. García-Domínguez, E. Cornejo-Oviedo, P.M. Brown, J. Villanueva-Díaz, J. Cerano, and C. Cortés Montaño2014Fine-scale factors influence fire regimes in mixed-conifer forests on three high mountains in MexicoInternational Journal of Wildland Fire23959-968 Yocom Kent, L.L., P.Z. Fulé, P.M. Brown, J. Cerano, E. Cornejo-Oviedo, C. Cortés Montaño, S.A. Drury, D.A. Falk, J. Meunier, H.M. Poulos, C.N. Skinner, S.L. Stephens, J. Villanueva-Díaz2017Climate drives fire synchrony but local factors control fire regime change in northern MexicoEcosphere38Article e01709 START YEAR: 1509 AD * END YEAR: 2007 AD -100.53 25.43 -100.53 25.43