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    A history of recurrent, low-severity fire without fire exclusion in southeastern pine savannas, USA

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    Name:
    Rother et al. 2020_FEM_Red Hills ...
    Embargo:
    2022-08-19
    Size:
    2.080Mb
    Format:
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    Description:
    Final Accepted Manuscript
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    Author
    Rother, Monica T.
    Huffman, Jean M.
    Guiterman, Christopher H.
    Robertson, Kevin M.
    Jones, Neil
    Affiliation
    Univ Arizona, Lab Tree Ring Res
    Issue Date
    2020-08-19
    Keywords
    Longleaf pine (Pinus palustris)
    Prescribed fire
    Dendrochronology
    Fire history
    Reference sites
    Red Hills Region
    
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    Citation
    Rother, M. T., Huffman, J. M., Guiterman, C. H., Robertson, K. M., & Jones, N. (2020). A history of recurrent, low-severity fire without fire exclusion in southeastern pine savannas, USA. Forest Ecology and Management, 475, 118406.
    Journal
    FOREST ECOLOGY AND MANAGEMENT
    Rights
    © 2020 Elsevier B.V. All rights reserved.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    The reintroduction and maintenance of historical surface fire regimes are primary goals of ecological restoration across many open, pine-dominated ecosystems in North America. In the United States, most of these ecosystems experienced long periods of fire exclusion in the 20th century, leaving few locations to serve as reference sites for ecological conditions associated with a continuous history of recurrent, low-severity fire. Here, we present a tree-ring perspective of uninterrupted surface fire activity from three pine savanna sites in the Red Hills Region of northern Florida and southwestern Georgia, USA. Our sites include two old-growth stands of longleaf pine (Pinus palustris): the Wade Tract on Arcadia Plantation and the Larkin Tract on Millpond Plantation. We also sampled the largely second-growth mixed pine savannas of Tall Timbers Research Station. Documentary records for burning at these sites are limited to recent decades and are often incomplete, although regional land-use traditions and scattered historical records indicate frequent fire may have persisted through the 20th century to present day. Fire-scarred cross sections from externally-scarred stumps, dead trees, and live trees provided tree-ring evidence of frequent fires occurring from the beginning of our fire-scar record in the late 19th century onward. Both fire frequency and seasonality were relatively consistent throughout time and among sites. Biennial and annual fire intervals were the most common. Most fire scars occurred in the dormant and early-earlywood portions of the rings, indicating that these fires were human-set fires during the months of January to mid-April, before the main lightning-fire season. Our findings regarding post-settlement fire frequency are consistent with previous estimates of fire frequency during earlier centuries, resulting from lightning and Native American ignitions. We recommend that our sites be used as reference sites for restoration as they are among the relatively few areas in the United States with a continuous history of frequent low-severity fire without 20th century fire exclusion.
    Note
    24 month embargo; published 19 August 2020
    ISSN
    0378-1127
    DOI
    10.1016/j.foreco.2020.118406
    Version
    Final accepted manuscript
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.foreco.2020.118406
    Scopus Count
    Collections
    UA Faculty Publications

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