noaa-fire-26331 Bakker fire data from Kellett Bluff, Northwest Washington - IMPD USWKB001 Bakker, J.D.; Jones, E.; Sprenger, C.B. Bakker fire data from Kellett Bluff, Northwest Washington - IMPD USWKB001 2019-02-25 NCDC-Paleoclimatology ONLINE Files Pending https://www.ncdc.noaa.gov/paleo/study/26331 Investigator J.D. Bakker Investigator E. Jones Investigator C.B. Sprenger earth science paleoclimate fire history fire scar dates geoscientificInformation PSME Pseudotsuga menziesii (Mirb.) Franco Douglas-fir 1502 AD 2011 AD 448 cal yr BP -61 cal yr BP Complete 48.588 48.588 -123.197 -123.197 35 35 Continent North America United States Of America Washington Kellett Bluff>LATITUDE 48.588>LONGITUDE -123.197 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 Jonathan D. Bakker, Ellen Jones, Carson B. Sprenger 2019 Canadian Journal of Forest Research 10.1139/cjfr-2018-0354 http://www.nrcresearchpress.com/doi/abs/10.1139/cjfr-2018-0354

Fire is a common disturbance in many forests. We conducted a fire history study on 40 Douglas-fir (Pseudotsuga menziesii) trees from two sites, Kellett Bluff and Turn Point, in the San Juan Islands of Washington state, USA. In total, 146 fire scars were identified and dated, representing 34-35 fires per site. Fires occurred between 1565 and 1964. Individual trees recorded up to 10 fires. The composite mean fire interval (MFI) was 11-13 years over the entire study period and 6 years in the historical period (1780-1895). These sites were structured by frequent, low-severity fires, yet supported a tree component for centuries - the oldest tree in this study was more than 500 years old. A program of frequent, low-severity fire may be critical for their long-term persistence. Comparisons of fire history data among these and five other local sites indicate frequent fires but little synchronicity; the MFI was 4 years but most fires were only recorded at single sites. Although forests west of the Cascade Mountains are often described as subject to infrequent, high-severity fires, these results highlight the need for a more refined understanding of historical fire regimes in this region. STUDY NOTES: This site was sampled as part of a project to reconstruct historical fire regimes at two sites in the San Juan Islands. Ring-boundary fire scars were assigned to the preceding calendar year.

GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/uswkb001-fire-hist-graph.png Fire History Graph; uswkb001-fire-hist-graph.png GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/uswkb001.txt More Information; uswkb001.txt GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/uswkb001.fhx Fire Scar Data; uswkb001.fhx GET DATA https://www1.ncdc.noaa.gov/pub/data/paleo/firehistory/firescar/northamerica/fire-hist-graphs/uswkb001-fire-hist-graph.pdf Fire History Graph; uswkb001-fire-hist-graph.pdf USA/NOAA DIF Version 9.8.4 2019-03-06 2019-03-06