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Evaluating the consistency of understorey vegetation response to forest thinning through synthetic analysis of operational-scale experimentsAuthor(s): Duncan S. Wilson; Paul D. Anderson; Klaus J. Puettmann
Source: Forestry. 82(5): 583-596
Publication Series: Scientific Journal (JRNL)
Station: Pacific Northwest Research Station
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DescriptionWe attempted to extend the inference scope of several detailed songbird habitat restoration studies in western Oregon to the broader region through a reanalysis and synthesis of five largescale management experiments. This previous work demonstrated the importance of understorey vegetation to songbird habitat. However, individual studies have shown conflicting results regarding how vegetation responds to restoration thinning. Understorey vegetation covers 4-6 years after thinning was strongly related to pre-treatment conditions (indexed by the unthinned control treatment). Baseline models that accounted for the pre-treatment conditions showed that herbaceous cover consistently, but only slightly, increased following thinning. Shrub cover, however, tended to decrease following thinning when the pre-treatment cover was >30 per cent. Each study had limited replication and most had limited geographic and environmental conditions, leading to the inconsistent findings when analysed separately. The reanalysis approach allowed us to test the repeatability of specific finding and demonstrated the applicability of restoration thinning for enhancing habitat in western Oregon.
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CitationWilson, Duncan S.; Anderson, Paul D.; Puettmann, Klaus J. 2009. Evaluating the consistency of understorey vegetation response to forest thinning through synthetic analysis of operational-scale experiments. Forestry. 82(5): 583-596.
Keywordsthinning, quantitative synthesis, vegetation response, songbird habitat, large-scale management experiments
- Understory vegetation response to thinning and burning restoration treatments in dry conifer forests of the eastern Cascades, USA
- Songbird response to alternative forest density management in young Douglas-fir stands
- Preliminary study of the effects of headwater riparian reserves with upslope thinning on stream habitats and amphibians in western Oregon.
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