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The Impact of Historic Logging on Woody Debris Distribution and Stream Morphology in the Great Smoky Mountains National Park, North Carolina-Tennessee
| Content Provider | Semantic Scholar |
|---|---|
| Author | Morris, Christopher M. |
| Copyright Year | 2008 |
| Abstract | In the early 1900s, large sections of the Great Smoky Mountains were intensively logged. Since then, most locations have been allowed to naturally become forest-covered again, resulting in areas of secondary growth and old growth forest. To determine whether differences in large woody debris (LWD) loading and channel morphology persist today, I measured LWD, channel widths and depths, and channel bed sediments of streams in old and secondary growth forest in the Great Smoky Mountains National Park. LWD pieces in streams in old growth had larger mean diameters and lengths compared to LWD in streams in secondary growth forest. Streams in old growth had 5.6 times more LWD volume than those in secondary growth. More LWD pieces were in debris dams in old growth than in secondary growth forest. Channel bed sediment size did not differ significantly between streams in old and secondary growth forest. Channel widths and depths were significantly larger in streams in old growth forest. LWD pieces affected channel depth primarily by creating pools and causing deposition of sediment. LWD affected width by directing stream flow toward banks and by protecting banks from erosion. I observed that the orientation of LWD was important in determining its geomorphic role. Although I found no relationship between LWD loading and watershed |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://etd.utk.edu/2008/MorrisChris.pdf |
| Alternate Webpage(s) | https://trace.tennessee.edu/cgi/viewcontent.cgi?article=1444&context=utk_gradthes |
| Alternate Webpage(s) | https://trace.tennessee.edu/cgi/viewcontent.cgi?article=1444&context=utk_gradthes&httpsredir=1&referer= |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
