The effects of three regeneration harvest methods on plant diversity and soil characteristics in the southern Appalachians
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Published source details
Elliott K.J. & Knoepp J.D. (2005) The effects of three regeneration harvest methods on plant diversity and soil characteristics in the southern Appalachians. Forest Ecology and Management, 211, 296-317.
Published source details Elliott K.J. & Knoepp J.D. (2005) The effects of three regeneration harvest methods on plant diversity and soil characteristics in the southern Appalachians. Forest Ecology and Management, 211, 296-317.
Actions
This study is summarised as evidence for the following.
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Use group-selection harvesting Action Link |
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Use shelterwood harvesting Action Link |
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Use group-selection harvesting
A replicated, controlled study in 1994-2000 in mixed hardwood forest in North Carolina USA (Elliott & Knoepp 2005) found that group-selection harvesting increased the diversity of shrubs and herbaceous plants, but not the density of shrubs and trees. Numbers of shrub species/plot (group-selection: 10; uncut: 4) and diversity (Shannon index) of herbaceous plants (group-selection: 2.2; uncut: 1.8) were higher in group-selection than uncut plots. The density (individuals/ha) of shrubs (group-selection: 28,347; uncut: 21,789) and of trees (group-selection: 742; uncut: 771) was similar between treatments. Three group-selection (0.1–0.2 ha openings, 25% tree-cover removed) and two uncut sites (4.0-6.6 ha) were established in 1994. Monitoring was in 2000 in four plots (20 × 40 m) in each treatment site.
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Use shelterwood harvesting
A replicated, controlled study in 1994-2000 in mixed hardwood forest in North Carolina USA (Elliott & Knoepp 2005) found that shelterwood harvest increased the density and the diversity of plants. The density (individuals/ha) of trees (shelterwood: 1,009-1,094; uncut: 771), density of shrubs (shelterwood: 38,269-49,117; uncut: 21,789), number of shrub species/plot (shelterwood: 10; uncut: 4) and diversity (Shannon index) of herbaceous plants (shelterwood: 2.2-2.4; uncut: 1.8) were higher in shelterwood harvest treatments. In 1994, eight sites (4.0-6.6 ha) were each assigned to one of three treatments: three sites of two shelterwood treatments (5 m2/ha and 9 m2/ha residual basal area), and two uncut sites. Monitoring was in 2000 in four plots (20 × 40 m) in each treatment site.
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