NOTES 



1 These scenarios were originally used by Kana et al. (1984). They are based on local subsidence 



and the Hoffman et al. (1983) mid-low and mid-high scenarios. See Titus et al. (1984) for 

 further explanation. 



2 Plots of the profile of each transect, showing the modal elevations of the substrate and zonation 



of plant species, can be found in Appendix A of an earlier publication of this study: T. Kana, 

 B. Baca, M. Williams, 1986, Potential Impacts of Sea Level Rise on Wetlands Around 

 Charleston, North Carolina, U.S. Environmental Protection Agency, Washington, D.C. 



3 Kurz and Wagner (1957) and Stalter (1968) found lower elevation limits for 5. altemiflora 



growth in the Charleston area. However, we found these marshes to be highly variable and 

 often terminated in oyster reef or steep dropoffs which precluded the growth of vegetation. 

 The lack of vegetation in these areas and the inherent variability of area marshes may explain 

 these discrepancies with earlier works. 



4 For budgetary reasons, we could not rigorously calculate areas using a computerized 



planimeter. This level of precision would be questionable anyway, in light of the imprecision 

 of USGS topographic maps in delineating marshes and tidal flats near mean water levels. 



5 Because the standard error of a sum is less than the sum of individual standard errors, the 



errors are likely to be less. Unfortunately, we had no way of rigorously testing these results 

 within the time and budget constraints of the project. 



6 The scenario referred to as "medium" in Barth and Titus is called "high" in this report. 



REFERENCES 



Barth, M.C., and J.G. Titus (Eds.), 1984. Greenhouse Effect and Sea Level Rise. Van 

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Boesch, D.F., D. Levin, D. Nummedal, and K. Bowles, 1983. Subsidence in Coastal 

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DeLaune, R.D., C.J. Smith, and WH. Patrick, Jr., 1983. "Relationship of marsh elevation, 

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Due, A.W., 1981. "Back barrier stratigraphy of Kiawah Island, South Carolina." Ph.D. 

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Gibbs, M.J., 1984. "Economic analysis of sea level rise: methods and results." In M.C. Barth 

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