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    Author(s): Robert G. Hooper
    Date: 1988
    Source: The Journal of Wildlife Management
    Publication Series: Scientific Journal (JRNL)
    Station: Southern Research Station
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    Description

    I studied characteristics and availability of young (≤80 yr old) and old (≥100 yr old) longleaf pines (Pinus palustris) used and not used for cavities by red-cockaded woodpeckers (Picoides borealis), and the associated population densities of red-cockaded woodpeckers in Osceola and Ocala national forests (NF) in Florida, and in Francis Marion NF in South Carolina. In Francis Marion NF old noncavity trees were common (17/ha); 6% of the cavity trees were young; decayed heartwood was frequent in old (97%) and young (86%) cavity trees (P = 0.299), but rare in young noncavity trees (9%); and population density was high (8.3 colonies/1,000 ha). In Osceola and Ocala NF, respectively, old noncavity trees were rare (<1/ha); 65 and 76% of the cavity trees were young; decayed heartwood was frequent in old cavity trees (80 and 90%), but less so in young cavity trees (27 and 32%) (P ≤ 0.007); young cavity trees had faster growth rates than young noncavity trees (P ≤ 0.001); and population densities were low (1.7 and 1.4 colonies/1,000 ha). Red-cockaded woodpeckers may have been using the easiest trees to excavate. The order of preference appeared to be trees with decayed heartwood and then fast-growing trees with sound heartwood. Because decay increases with tree age and decayed trees are the most preferred, older trees apparently provide red-cockaded woodpeckers with more and better opportunities for cavity excavation than younger trees. Results support past recommendations of providing longleaf pines >95 years old to red-cockaded woodpeckers for cavity excavation.

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    Citation

    Hooper, Robert G. 1988. Longleaf pines used for cavities by red-cockaded woodpeckers. The Journal of Wildlife Management. 52(3): 392-. https://doi.org/10.2307/3801579.

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    Keywords

    Pine trees, Tree cavities, Heartwood, Woodpeckers, Tree age, Age structure, National forests, Excavations, Population density

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https://www.fs.usda.gov/treesearch/pubs/59590