noaa-fire-26010 Whitehair fire data from Lukachukai, northeast Arizona - IMPD USLUK001 Whitehair, L.; Fule, P.; Sánchez, M.; Azpeleta Tarancón, A.; Kim, Y.-S. Whitehair fire data from Lukachukai, northeast Arizona - IMPD USLUK001 2019-02-01 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/26010 Investigator L. Whitehair Investigator P. Fule Investigator M. Sánchez Investigator A. Azpeleta Tarancón Investigator Y.-S. Kim earth science paleoclimate fire history fire scar dates geoscientificInformation PIPO Pinus ponderosa Douglas ex C. Lawson ponderosa pine western yellow pine PSME Pseudotsuga menziesii (Mirb.) Franco Douglas-fir 1388 AD 2015 AD 562 cal yr BP -65 cal yr BP Complete 36.468006 36.468006 -109.154961 -109.154961 2596 2596 Continent North America United States Of America Arizona Lukachukai>LATITUDE 36.468006>LONGITUDE -109.154961 None Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. English DOC/NOAA/NESDIS/NCEI National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce https://www.ncdc.noaa.gov/data-access/paleoclimatology-data DATA Center Contact Bruce Bauer bruce.a.bauer@noaa.gov paleo@noaa.gov 303-497-6280 303-497-6513

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Boulder CO 80305-3328 USA online ASCII Whitehair, L., Fulé, P.Z., Sanchez Meador, A.J., Begay Jr, M.A. 2017 Proquest Whitehair, L., Fulé, P.Z., Sanchez Meador, A.J., Azpeleta Tarancón, A., Yeon-Su, K. 2018 Ecology and Evolution 8 9848-9858 10.1002/ece3.4470

Fire has played an important role in the evolutionary environment of global ecosystems and Indigenous peoples have long managed natural resources in these fire-prone environments. Increasing severity of large wildfires in the southwestern U.S. affects both tribal and non-tribal lands in the region, but tribal forests are substantially underrepresented in terms of fire regime studies. We worked with the Navajo Nation Forestry Department to evaluate the historic role of fire on a 50 km 2 landscape bisected by a natural mountain pass in the Lukachukai Mountains. We used fifty 5-ha circular plots in order to collect proxy fire history data on fire-scarred trees, stumps, logs, and snags in a coniferous forest. The fire history data were categorized into three groups: All (all 50 plots), Corridor (25 plots closest to Buffalo Pass drainage), and Outer (remaining 25 plots to the north and south, farther from pass).We assessed spatial and temporal patterns of fire recurrence and fire-climate relationships. The landscape experienced frequent fires from 1644, the earliest fire date with sufficient sample depth, to 1920, when the fire regime was completely interrupted. The mean fire interval (MFI) for fire dates scarring 10% or more of the samples was 6.25 years; there were also 13 large-scale fire events fires identified with the 25% filter with an MFI of 22.6 yrs. Fire regimes varied over the landscape, with an early reduction in fire occurrence after 1829, likely associated with pastoralism, in the outer uplands away from the pass. In contrast, the pass corridor had continuing fire occurrence until the early 20th century. Synthesis. Fires were synchronized by large-scale top-down climatic oscillations (drought and La Niña), but the spatially explicit landscape sampling design allowed us to detect bottom-up factors of topography, livestock grazing, and human movement patterns that interacted in complex ways to influence the fire regime at fine scales. Since the early 20th century, however, fires have been completely excluded. Fuel accumulation in the absence of fire and warming climate present challenges for future management. STUDY NOTES: This site was sampled to reconstruct historical fire regimes on the Chuska mountain range located in northeast Arizona.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/usluk001-fire-hist-graph.pdf Fire History Graph; usluk001-fire-hist-graph.pdf GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/usluk001-fire-hist-graph.png Fire History Graph; usluk001-fire-hist-graph.png GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usluk001.txt More Information; usluk001.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usluk001.fhx Fire Scar Data; usluk001.fhx USA/NOAA DIF Version 9.8.4 2019-02-20 2019-02-20