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Botany

University of Tennessee, Knoxville

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A Study Of Epixylic Bryophyte Ecology On Fraser Fir Logs In The Great Smoky Mountains National Park, Erica Choberka Dec 1998

A Study Of Epixylic Bryophyte Ecology On Fraser Fir Logs In The Great Smoky Mountains National Park, Erica Choberka

Masters Theses

The Southern Appalachian spruce-fir forest is experiencing the chaotic conditions of ecosystem destruction resulting from the balsam woolly adelgid (Adelges piceae (Ratz)) infestation. In the present study, I have examined the community structure of bryophytes on fir logs in the high elevation spruce-fir forest of the Great Smoky Mountains National Park (GSMNP) to learn about the responses of bryophytes to the sudden change in forest structure.

This study has four primary objectives: 1) to provide an updated list of the epixylic bryophytes on fir logs in the spruce-fir forest of the GS MNP; 2) to compare results with previous …


The Bryophyte Flora Of Savage Gulf, Grundy County, Tennessee, Yvonne M. Mescall Mar 1979

The Bryophyte Flora Of Savage Gulf, Grundy County, Tennessee, Yvonne M. Mescall

Masters Theses

Savage Gulf is a broad, deep gorge located on the western edge of the Cumberland Plateau in Grundy County, Tennessee. Prior to this study, no comprehensive lists of the bryophytes of this area existed, and no attempts had been made to describe the bryophyte flora of the gorge or adjacent plateau. The present study was initiated after discovering several-interesting bryophytes on a trip to the gorge in April 1977.

One hundred and eighty-two species of bryophytes from 107 genera in 74 families have been identified for the Savage Gulf area. Of this total, five species are recognized as disjunct Coastal …


Patterns Of Species Segregation As Related To Topographic Form And Aspect, Homero Cabrera Aug 1969

Patterns Of Species Segregation As Related To Topographic Form And Aspect, Homero Cabrera

Masters Theses

The purpose of this study is twofold. The first aim is to provide a quantitative description of the natural vegetation of a portion of Ash Log Mountain, Campbell County, Tennessee. The second aim is to test the hypothesis of homogenisty of the Mixed Mesophytic forest community, as proposed by Braun, with respect to minor topographic and aspectual variation of the landscape. The study area lies in Campbell County, Tennessee, in the Cumberland Mountains.

As a whole, the Southern Appalachian Region contains greater than twice the proportion of commercial forest lands than does the remainder of the nation. These forest lands …


Bryoecology Of The Appalachian Spruce-Fir Zone, Daniel Howard Norris Aug 1964

Bryoecology Of The Appalachian Spruce-Fir Zone, Daniel Howard Norris

Doctoral Dissertations

Introduction: Ecological investigation of an area ordinarily follows a certain course. First explorations attempt to discover the nature of the flora, and ecological information is incidental to the habitat notes of collected species. Later, general qualitative observations appear regarding he vegetation of particular habitats. Only after this is a quantitative study using quadrats or other sampling techniques begun, and this quantitative work lays the foundation for future autecological, ecosystem and productivity work. Traditionally the above course is followed first by workers in vascular plant ecology, and studies of cryptograms are seldom as far advanced as that of the spermatophytes.

The …


Vegetational Succession On Three Grassy Balds Of The Great Smoky Mountains, Mary Ellen Bruhn Jun 1964

Vegetational Succession On Three Grassy Balds Of The Great Smoky Mountains, Mary Ellen Bruhn

Masters Theses

Introduction: The Great Smoky Mountains Conservation Association recently requested that the National Park Service take steps to preserve three grassy balds (Andrews Bald, Spence Field, and Gregory Bald) of the Great Smoky Mountains by preventing the invasion of woody vegetation on these balds. The National Park Service requested that the University of Tennessee Department of Botany look into the problem and thus the problem was brought to the attention of the author by Dr. E. E. C. Clebsch.

This is a study of vegetation change on these three grassy balds. Special interest is given to the rate of encroachment of …


Ground Vegetation Patterns Of The Spruce-Fir Area Of The Great Smoky Mountains National Park, Dorothy Louise Crandall Dec 1957

Ground Vegetation Patterns Of The Spruce-Fir Area Of The Great Smoky Mountains National Park, Dorothy Louise Crandall

Doctoral Dissertations

Introduction: Although the spruce-fir area of the Southern Appalachians has interested several investigators, there have been few studies of the herbaceous plants in relation to the canopy and none with this relationship as the primary objective. Ecological surveys have been made by Cain (1931, 1935), Oosting and Billings (1951), and Whittaker (1956), but their papers do not report details in reference to site types and include rather limited material on the ground cover. Possible site types were mentioned by Whittaker but were not described and few supporting data of an objective nature were included.

Cain in his 1935 paper on …