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035 a| (Sirsi) o174121203;

035 a| (OCoLC)174121203;

043 a| n-us-nc;

049 a| EREE;

050 4 a| QK178b| .C45 2004;

100 1 a| Chester, Rebecca E.,e| author.?| UNAUTHORIZED;

245 10 a| Floristic assessment of a wet mineral flat at the East Carolina University West Research Campus and investigation of influential, human-mediated factors on the plant community /c| by Rebecca E. Chester.;

264 0 c| 2004.;

300 a| vi, 121 leaves :b| illustrations, map ;c| 28 cm;

336 a| textb| txt2| rdacontent;

337 a| unmediatedb| n2| rdamedia;

338 a| volumeb| nc2| rdacarrier;

502 b| M.S.c| East Carolina Universityd| 2004;

500 a| Presented to the faculty of the Department of Biology.;

500 a| Advisor: Carol Goodwillie;

520 3 a| The plant community at a former Voice of America (VoA) site in Pitt County, North Carolina was characterized. A floristic survey yielded a list of 242 species. Using this list, similarity values between the site and local reference communities were determined. The highest similarity value, 0.31, was with Lanier Quarry Savanna in Pender County, NC. Topographic qualities at the site and comparison to reference communities indicates the historical community for a considerable portion was a wet pine flat, pine savanna, or a mosaic of the types. While the site operated as the VoA, human-mediated alterations were introduced including a network of ditches and a yearly vegetation control regime. Data from near ditch monitoring wells showed that the water table was significantly lower compared to wells > 45 m from a ditch. Results of multivariate analyses including cluster analysis, DCA, and ANOVA indicate that altered hydrologic regime has affected the plant community composition. In particular, importance values (IV) of species shared with four of five reference sites differ significantly with distance to a ditch. Although IV of wetland species did not differ significantly, they declined as much as 50% at the highest and driest distance atop the ditch berm. Analyses further revealed that heterogeneity may be partially related to variable microtopography at the site. Annual vegetation control regimes were part of the site's history from the 1960's until the mid-1990's. Timing of the regimes has recently differed, providing an opportunity to investigate the effects of disturbance on the plant community. Results show that an area left undisturbed since 2000 had a significantly lower diversity compared to an area disturbed most recently in 2002. Thus, human-mediated disturbance may have served to promote a higher diversity at the site by mimicking the effects of fire, once a naturally-occurring disturbance throughout the coastal plain. Importance values of reference community species and fire-adapted species were also significantly lower in the area last disturbed in 2000. The importance values of woody species were significantly highest in this area, 50% higher than the area most recently disturbed in 2003, indicating that succession is proceeding. Continued disturbance, preferably by prescribed bums will be necessary if the site is to be managed, and possibly restored, as a natural area to maintain some uncommon, native plant species and their associated community. Restoration of a more natural hydrologic regime at the site may be accomplished by disabling the ditches. This could benefit the community by restoring conditions more conducive to the species found in reference savannas and wet pine flats. With management guided toward restoration of likely natural and historic conditions, the site could become an example of the successful return of a threatened community type.;

504 a| Includes bibliographical references (leaves 105-109).;

650 0 a| Plant species diversityz| North Carolina.=| ^A853601;

650 0 a| Naturex| Effect of human beings onz| North Carolina.=| ^A5558;

650 0 a| Forest restorationz| North Carolina.=| ^A879637;

650 0 a| Longleaf pinez| North Carolina.=| ^A159338;

650 7 a| Forest restoration.2| fast0| (OCoLC)fst01739325;

650 7 a| Longleaf pine.2| fast0| (OCoLC)fst01002411;

650 7 a| Naturex| Effect of human beings on.2| fast0| (OCoLC)fst01034564;

650 7 a| Plant species diversity.2| fast0| (OCoLC)fst01065705;

655 7 a| Academic theses.2| fast0| (OCoLC)fst01726453;

655 7 a| Academic theses.2| lcgft;

655 7 a| Thèses et écrits académiques.2| rvmgf0| (CaQQLa)RVMGF-000001173;

655 2 a| Academic Dissertation.0| (DNLM)D019478?| UNAUTHORIZED;

700 1 a| Goodwillie, Carol,e| degree supervisor.=| ^A1170785;

710 2 a| East Carolina University.b| Department of Biology.=| ^A637467;

856 40 z| Access via ScholarShipu| http://hdl.handle.net/10342/11909;

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Floristic assessment of a wet mineral flat at the East Carolina University West Research Campus and investigation of influential, human-mediated factors on the plant community / by Rebecca E. Chester.

Author/creator	Chester, Rebecca E. author.
Other author	Goodwillie, Carol, degree supervisor.
Other author	East Carolina University. Department of Biology.
Format	Theses and dissertations
Production	2004.
Description	vi, 121 leaves : illustrations, map ; 28 cm
Supplemental Content	Access via ScholarShip
Subjects	Plant species diversity--North Carolina. Nature--Effect of human beings on. --North Carolina. Forest restoration--North Carolina. Longleaf pine--North Carolina.

Summary	The plant community at a former Voice of America (VoA) site in Pitt County, North Carolina was characterized. A floristic survey yielded a list of 242 species. Using this list, similarity values between the site and local reference communities were determined. The highest similarity value, 0.31, was with Lanier Quarry Savanna in Pender County, NC. Topographic qualities at the site and comparison to reference communities indicates the historical community for a considerable portion was a wet pine flat, pine savanna, or a mosaic of the types. While the site operated as the VoA, human-mediated alterations were introduced including a network of ditches and a yearly vegetation control regime. Data from near ditch monitoring wells showed that the water table was significantly lower compared to wells > 45 m from a ditch. Results of multivariate analyses including cluster analysis, DCA, and ANOVA indicate that altered hydrologic regime has affected the plant community composition. In particular, importance values (IV) of species shared with four of five reference sites differ significantly with distance to a ditch. Although IV of wetland species did not differ significantly, they declined as much as 50% at the highest and driest distance atop the ditch berm. Analyses further revealed that heterogeneity may be partially related to variable microtopography at the site. Annual vegetation control regimes were part of the site's history from the 1960's until the mid-1990's. Timing of the regimes has recently differed, providing an opportunity to investigate the effects of disturbance on the plant community. Results show that an area left undisturbed since 2000 had a significantly lower diversity compared to an area disturbed most recently in 2002. Thus, human-mediated disturbance may have served to promote a higher diversity at the site by mimicking the effects of fire, once a naturally-occurring disturbance throughout the coastal plain. Importance values of reference community species and fire-adapted species were also significantly lower in the area last disturbed in 2000. The importance values of woody species were significantly highest in this area, 50% higher than the area most recently disturbed in 2003, indicating that succession is proceeding. Continued disturbance, preferably by prescribed bums will be necessary if the site is to be managed, and possibly restored, as a natural area to maintain some uncommon, native plant species and their associated community. Restoration of a more natural hydrologic regime at the site may be accomplished by disabling the ditches. This could benefit the community by restoring conditions more conducive to the species found in reference savannas and wet pine flats. With management guided toward restoration of likely natural and historic conditions, the site could become an example of the successful return of a threatened community type.
General note	Presented to the faculty of the Department of Biology.
General note	Advisor: Carol Goodwillie
Dissertation note	M.S. East Carolina University 2004
Bibliography note	Includes bibliographical references (leaves 105-109).
Genre/form	Academic theses.
Genre/form	Academic theses.
Genre/form	Thèses et écrits académiques.

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Floristic assessment of a wet mineral flat at the East Carolina University West Research Campus and investigation of influential, human-mediated factors on the plant community / by Rebecca E. Chester.

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