Committee Chair

Boyd, Jennifer N.

Committee Member

Shaw, Joey; Guadin, Timothy

Department

Dept. of Biological and Environmental Sciences

College

College of Arts and Sciences

Publisher

University of Tennessee at Chattanooga

Place of Publication

Chattanooga (Tenn.)

Abstract

Scutellaria montana Chapm. (Large-flowered skullcap) is a federally listed species endemic to a few counties in northwestern Georgia and southeastern Tennessee. A large population of this species is housed within the Tennessee Army National Guard Volunteer Training Site (VTS) in Catoosa County, GA. To investigate the impacts of large mammal herbivores on this species at the VTS, an exclosure experiment was conducted in the field during 2011 and 2012. Results indicate that deer are not negatively impacting S. montana at the individual or population levels, but and after the second season, it was apparent that the white PVC pipe used to construct the exclosure frames attracted deer to plants that were accessible within one of the treatments. Results indicated that deer may also play a positive, indirect role through thinning by reducing resource competition between S. montana and other understory vegetation. During 2012, I investigated the effects of disturbances associated with prescribed burning and canopy thinning on impacts of herbivory to S. montana. Results did not indicate a significant effect of these disturbances, either singularly or combined, on the impacts of herbivory to S. montana. Results are considered preliminary because this research was conducted only during one study season and there were no replicates of treatments. Regarding management of S. montana populations at the VTS, it was concluded that current herbivory levels are not threatening the continued existence of S. montana there.

Degree

M. S.; A thesis submitted to the faculty of the University of Tennessee at Chattanooga in partial fulfillment of the requirements of the degree of Master of Science.

Date

12-2012

Subject

Botany; Environmental management; Scutellaria

Location

Georgia; Tennessee

Keyword

Environmental impact; Tennessee; Georgia; Large-flowered skullcap

Discipline

Environmental Sciences

Document Type

Masters theses

Extent

xv, 90 leaves

Language

English

Rights

Under copyright.

License

http://creativecommons.org/licenses/by-nc-nd/3.0/

Share

COinS