Ecological factors associated with bark thickness in Pinus taeda L. / by Coleman A. Doggett.
| Author/creator | Doggett, Coleman author. |
| Other author | Davis, Graham J., degree supervisor. |
| Other author | East Carolina University. Department of Biology. |
| Format | Theses and dissertations |
| Production | 1969. |
| Description | 38 leaves : illustrations ; 29 cm |
| Supplemental Content | Access via ScholarShip |
| Subjects |
| Summary | Data taken from two hundred loblolly pines (Pinus taeda L.) in the ten-inch diameter class were analyzed in regard to possible correlations between single bark thickness at diameter at breast height and a number of other factors. Sample trees used in the study were chosen from a wide variety of ecological habitats in the Coastal Plain and the Piedmont of North Carolina. The relationship of age, aspect, radial growth rate, stand position, crown shape, site quality, tree lean, and exposure to both total and minimum single bark thickness was studied. From this study the following conclusions were drawn; 1) There was a statistically significant relationship between age and minimum single bark thickness, but there was no significant relationship between age and total single bark thickness. 2) There was a statistically significant relationship between stand density and minimum single bark thickness, but there was no significant relationship between stand density and total bark thickness. 3) There was no significant variation in bark thickness on the north, east, south, and west sides of the sample trees. 4) There was a significant relationship between radial growth rate and minimum bark thickness, but no significant relationship occurred between radial growth rate and total single bark thickness. 5) There was no significant relationship between expression of dominance and either total single bark thickness or minimum bark thickness. 6) There was no significant correlation between crown shape and either total or minimum single bark thickness. 7) An inverse relationship existed between site quality and both total and minimum single bark thickness. As site quality increased, bark thickness decreased. 8) When sample trees were located on the edge of a stand of trees, the opening had no correlation with bark thickness. Bark thickness in the direction of the opening was not significantly different from bark thickness in other directions. 9) There was no significant correlation between tree lean and bark thickness. Bark thickness was statistically the same on the leaning side of the tree as on the other three sides. |
| General note | Submitted to the faculty of the Department of Biology. |
| General note | Advisor: Graham J. Davis |
| Dissertation note | M.A. East Carolina University 1969 |
| Bibliography note | Includes bibliographical references (leaf 19). |
| Genre/form | dissertations. |
| Genre/form | Academic theses. |
| Genre/form | Academic theses. |
| Genre/form | Thèses et écrits académiques. |
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