2002
DOI: 10.1006/qres.2002.2378
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Fire and Vegetation History from the Coastal Rain Forest of the Western Oregon Coast Range

Abstract: High-resolution charcoal and pollen analyses were used to reconstruct a 4600-yr-long history of fire and vegetation near Taylor Lake in the wettest forests of coastal Oregon. Today, fires in these forests are rare because the season of ignition does not coincide with months of dry fuels. From ca. 4600 to 2700 cal yr B.P. fire episodes occurred at intervals of 140±30 yr while forest vegetation was dominated by disturbance-adapted taxa such as Alnus rubra. From ca. 2700 cal yr B.P. to the present, fire episodes … Show more

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Cited by 73 publications
(48 citation statements)
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“…Modern calibration studies and theory support the interpretation of large charcoal accumulation rate peaks with associated erosional events as a result of severe fire, and that the fire intensity signal is stronger than the influence from fire proximity or extent (Higuera et al, 2007;Whitlock and Larsen, 2001;Duffin et al, 2008), however the lack of correlation between charcoal peaks and terrigenous deposits has been noted for some Cascadia lake sediments (e.g. Long et al, 1998;Long and Whitlock, 2002). Relevant to this study is the investigation of the fire history recorded at Little Lake, Oregon (central Oregon Coast range), by Long et al (1998) who show that charcoal accumulation rate peaks do not correlate with the magnetic susceptibility records (r = 0.288) at that site.…”
Section: Forest Firesmentioning
confidence: 95%
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“…Modern calibration studies and theory support the interpretation of large charcoal accumulation rate peaks with associated erosional events as a result of severe fire, and that the fire intensity signal is stronger than the influence from fire proximity or extent (Higuera et al, 2007;Whitlock and Larsen, 2001;Duffin et al, 2008), however the lack of correlation between charcoal peaks and terrigenous deposits has been noted for some Cascadia lake sediments (e.g. Long et al, 1998;Long and Whitlock, 2002). Relevant to this study is the investigation of the fire history recorded at Little Lake, Oregon (central Oregon Coast range), by Long et al (1998) who show that charcoal accumulation rate peaks do not correlate with the magnetic susceptibility records (r = 0.288) at that site.…”
Section: Forest Firesmentioning
confidence: 95%
“…As a result, lakes west of the Cascade Range have been cored and used extensively for reconstructions of climate, vegetation and fire history (e.g. Dearing and Jones, 2003;Karlin et al, 2004;Long et al, 1998;Briles et al, 2008;Whitlock et al, 2008;Long et al, 2007;Walsh et al, 2010;Prichard et al, 2009;Long and Whitlock, 2002, and many others). Cascadia forearc lakes have not been considered good candidates for palaeoseismology because many are small with limited clastic input due to their heavily forested catchments and lack of large elevation gradients.…”
Section: Cascadia Inland Lakes As Recorders Of Great Earthquakesmentioning
confidence: 99%
“…At Taylor Lake on the northern Oregon coast (Fig. 3), fire frequency decreased after w2700 cal BP, possibly reflecting decreased summer drought and increased summer fog (Long and Whitlock, 2002). Fire frequency increased between w4200 and 3000 cal yr BP in Oregon coastal lakes, possibly due to an increase in summer droughts, which would be expected from increased persistence of positive PDO conditions in the North Pacific (Long et al, 2007).…”
Section: Oregon and Northern California Marginmentioning
confidence: 98%
“…In these forests, the main successional pathway is characterized by Douglas-fir colonization after fire, Douglas-fir dominance during the first 200 to 300 years, and then slow succession to a ''climax'' forest dominated by the shade tolerant (but fire intolerant) western red cedar (Thuja plicata), and western hemlock (Tsuga heterophylla) as the stand ages (Munger 1940). However, because the historic fire return interval in these forests averaged between 180-270 years (Agee 1993, Long andWhitlock 2002), many of these stands were continually dominated by Douglas-fir, since stands were often reset by fire prior to succeeding to western hemlock and western red cedar dominance. Such forests occupy a wide range of soil moisture conditions, from mesic sites in valley bottoms to more xeric sites on ridgetops, but generally are not found in the more hydric conditions typical of floodplains.…”
Section: Study Areamentioning
confidence: 99%