Green-Tree Retention and Life after the Beetle: Stand Structure and Small Mammals 30 Years after Salvage Harvesting

作者: Thomas Sullivan , Druscilla Sullivan , Pontus Lindgren , Douglas Ransome

DOI: 10.14214/SF.451

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摘要: We report on a retrospective investigation of the impacts salvage harvesting lodgepole pine (Pinus contorta var. latifolia Engelm. ex S. Wats.), killed by an outbreak mountain beetle (Dendroctonus ponderosae Hopk.) in 1970s, with variable retention Douglas-fir (Pseudotsuga menziesii (Mirbel) Franco). Our inference to biodiversity was coniferous stand structure and four mammal species: southern red-backed vole (Myodes gapperi Vigors), common shrew (Sorex cinereus Kerr), red squirrel (Tamiasciurus hudsonicus Erxleben) northern flying (Glaucomys sabrinus Shaw). tested hypotheses that, at 30 years after harvest beetle-killed trees, (1) abundance diversity structure, (2) species, will increase higher levels green-tree (GTR). Stand attributes small mammals were sampled during 2005–2008 young stands, range GTR seed-trees (none, dispersed, aggregated Douglas-fir), uncut forest south-central British Columbia, Canada. Diameters heights basal area total conifers supported hypothesis (1). Mean consistently (2.3 6.4 times) than other stands. Overall mean patterns for shrews, squirrels, squirrels similar among treatment (2), but numbers three species did not. There is “life beetle” harvesting, this enhanced GTR.

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