Johnson fire data from Rio Hondo, northern New Mexico - IMPD USRH-001 Johnson, L.B.; Margolis, E.Q. Johnson, L.B. Margolis, E.Q. PPTR Populus tremuloides Michx. quaking aspen PISF Pinus strobiformis Engelm. southwestern white pine ABLA Abies lasiocarpa (Hook.) Nutt. subalpine fir corkbark fir PSME Pseudotsuga menziesii (Mirb.) Franco Douglas-fir PCEN Picea engelmannii Parry ex Engelm. Engelmann spruce (Rio Hondo>LATITUDE 36.592275>LONGITUDE -105.450345) Tree-ring fire scars, tree ages, historical photographs, and historical surveys demonstrate that fire played different ecological roles for centuries across gradients of elevation, forest, and fire regime in the Taos Valley Watersheds. Fire regimes collapsed across these three adjoining watersheds by 1899, leaving all sites without fire for at least 119 years. Historical photographs and quaking aspen (Populus tremuloides Michx.) ages indicate that high-severity fire historically burned at multiple high-elevation subalpine sites in today’s Village of Taos Ski Valley, with large high-severity patches (> 640 ha). Low-severity, frequent (9 – 29 year median interval) surface fires burned in nearby mid-elevation dry conifer forests on south aspects in all watersheds. Fires were associated with drought during the fire year, preceded by wet years, with widespread fires commonly burning synchronously in multiple watersheds during more-severe drought years, including within all three watersheds in 1664, 1715, and 1842. In contrast, recent “large” wildfires have burned within single watersheds and therefore are likely not large in a historical context. Management to promote repeated low-severity fire and associated open forest stand structures is within the historical range of variability in the dry conifer forests of these watersheds, but in the high-elevation, subalpine forests different management approaches are required that balance ecological and socio-economic values while providing for public safety. STUDY NOTES: This site was sampled as part of a project to reconstruct the fire history of the Taos Valley Watersheds in northern New Mexico. These data contain tree ages from 11 plots collected for high-severity fire reconstruction, as well as two associated fire-scarred trees. The site coordinate is the average of all trees and the area is from the convex hull. The associated comma separate value format (CSV) file https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usrh-001.dat contains establishment information, individual tree locations and tree species. NCDC-Paleoclimatology https://www.ncdc.noaa.gov/data-access/paleoclimatology-data - Bauer Bruce Investigator : Johnson, L.B. Investigator : Margolis, E.Q. 2018-11-06 ONLINE Files online, ASCII https://www.ncdc.noaa.gov/paleo/study/25778 https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usrh-001.txt https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/usrh-001-fire-hist-graph.png https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usrh-001.dat https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usrh-001.fhx https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/usrh-001-fire-hist-graph.pdf https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usrh-001.txt https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/usrh-001-fire-hist-graph.png https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usrh-001.dat https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usrh-001.fhx https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/usrh-001-fire-hist-graph.pdf English https://www.ncdc.noaa.gov/paleo/study/25778 https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usrh-001.txt https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/usrh-001-fire-hist-graph.png https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/establishment/northamerica/usrh-001.dat https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/usrh-001.fhx https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/usrh-001-fire-hist-graph.pdf Johnson, L.B.; Margolis, E.Q.2018Surface fire to crown fire: fire history in the Taos Valley Watersheds, New Mexico, USAFire START YEAR: 1480 AD * END YEAR: 2016 AD -105.450345 36.592275 -105.450345 36.592275