| ID |
2675 |
| Citation |
Sanborn, P. M. Geertsema, A.J.T. Jull, and B. Hawkes (2006) Soil and sedimentary charcoal evidence for Holocene forest řres in an inland temperate rainforest, east-central British Columbia, Canada, The Holocene 16,3:415-427. |
| Organization |
University of Northern British Columbia; Ministry of Forests and Range; University of Arizona; Canadian Forest Service |
| URL |
http://www.academia.edu/23286902/Soil_charcoal_evidence_for_Holocene_fire-related_sedimentation_in_an_inland_temparate_rain_forest_east_central_British_Columbia_Canada |
| Abstract/Description or Keywords |
Accelerator radiocarbon dating of 147 charcoal samples recovered from colluvial and alluvial fandeposits at 29 sites was used to reconstruct the Holocene fire history of an inland temperate rainforest watershed in east-central British Columbia (BC), Canada. Radiocarbon dates ranged from 182 to 9558cal. yr BP, with prominent peaks in the probability distribution of calibrated dates at c. 7100, 3900, 2300,1600 and 250/1000 cal. yr BP. The inferred median fire return interval (FRI) was 800/1200 cal. yr,depending on the extent of inbuilt age errors resulting from charring of wood pre-dating actual fire ages.This FRI is likely an overestimate, as less severe events may not have created sufficient erosion and slopeinstability to preserve a record of charcoal in buried soils and slope deposits. Median time since fire was467 cal. yr based on ages of the uppermost charcoal found at each site, but the severity of heart-rots in thedominant redcedars (Thuja plicata Donn ex D. Don) prevented independent confirmation of stand ages bydendrochronology. Sites with multiple charcoal-containing layers having similar radiocarbon ages can beexplained with reference to contemporary post-fire mass-wasting processes. Peaks in fire-relatedsedimentation probability coincided broadly with periods of higher fire frequency. 600/1000,1300/2400 and 3500/4500 cal. yr BP inferred from sedimentary charcoal records at subalpine sites insouthwestern BC. Correspondence with fire records from more distant sites in northwestern NorthAmerica was less clear. Fire; soil charcoal; radiocarbon dating; temperate rainforest; colluvium; alluvial fans; Holocene; British Columbia; Canada |
| Information Type |
Article |
| Regional Watershed |
Fraser River |
| Sub-watershed if known |
Morkill River |
| Aquifer # |
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| Comments |
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| Project status |
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