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Virginia Tech

1. Beasley, Christen Marie. Impacts of oak-focused silvicultural treatments on the regeneration layer nine years post-treatment in the southern Appalachian Mountains of North Carolina.

Degree: MS, Forestry, 2021, Virginia Tech

Oak-hickory (Quercus and Carya spp.) and oak-pine (Quercus and Pinus spp.) forest types occupy approximately 57 million and 11 million hectares of forestland in the eastern United States, respectively. Oaks are considered ecological and economic keystone species throughout the eastern U.S and maintenance of this genus in eastern U.S. forests has been a primary regional focus for decades. Historic disturbance regimes are estimated to have been much different than they are today. Fire was a common disturbance mechanism prior to fire suppression in the early 20th century. Frequent fires maintained much of the oak component historically. In the absence of fire, the species found in the understories of mature oak stands are commonly mesophytic species, such as yellow-poplar (Liriodendron tulipifera L.) and red maple (Acer rubrum L.). Over the last several decades, research has been conducted to investigate the impacts of treatments targeting the promotion of oak regeneration, but results have been varied and valuable long-term studies are rare. To determine the effects of treatments on the regeneration dynamics of oak and its competitors, four treatments were compared in the southern Appalachian Mountains. Treatments included a control, shelterwood harvest (SW), prescribed fire (RXF), and a shelterwood and burn (SWB). Stand structure and composition were monitored over a 9-year period post-treatment. Overall, results indicate the shelterwood and burn treatment has the greatest potential to improve the competitiveness of the red oak group in the regeneration layer, but yellow-poplar competition in the shelterwood and burn will need be addressed, considering its large increases in this treatment. Although increases in the red oak group were not as great as increases in the RXF treatment compared with the SWB, fire does show promise as a method to increase oak regeneration success. Changes in red oak group importance value varied with elevation, emphasizing results of treatments can be affected by site characteristics. Treatments were not successful at enhancing the competitive status of white oak (Quercus alba L.). Silvicultural treatments can be used to improve the competitive status of oak on sites in the southern Appalachian Mountains, but close monitoring of species dynamics throughout the rotation are needed to ensure long-term oak success. Advisors/Committee Members: Coates, Thomas Adam (committeechair), Carter, David Robert James (committeechair), Keyser, Tara (committee member).

Subjects/Keywords: Silvicultural Treatments; Ecosystem Restoration; Harvesting; Shelterwood

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Beasley, C. M. (2021). Impacts of oak-focused silvicultural treatments on the regeneration layer nine years post-treatment in the southern Appalachian Mountains of North Carolina. (Masters Thesis). Virginia Tech. Retrieved from http://hdl.handle.net/10919/101814

Chicago Manual of Style (16th Edition):

Beasley, Christen Marie. “Impacts of oak-focused silvicultural treatments on the regeneration layer nine years post-treatment in the southern Appalachian Mountains of North Carolina.” 2021. Masters Thesis, Virginia Tech. Accessed March 01, 2021. http://hdl.handle.net/10919/101814.

MLA Handbook (7th Edition):

Beasley, Christen Marie. “Impacts of oak-focused silvicultural treatments on the regeneration layer nine years post-treatment in the southern Appalachian Mountains of North Carolina.” 2021. Web. 01 Mar 2021.

Vancouver:

Beasley CM. Impacts of oak-focused silvicultural treatments on the regeneration layer nine years post-treatment in the southern Appalachian Mountains of North Carolina. [Internet] [Masters thesis]. Virginia Tech; 2021. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10919/101814.

Council of Science Editors:

Beasley CM. Impacts of oak-focused silvicultural treatments on the regeneration layer nine years post-treatment in the southern Appalachian Mountains of North Carolina. [Masters Thesis]. Virginia Tech; 2021. Available from: http://hdl.handle.net/10919/101814

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