HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Figures Only Full Text Free Full Text (PDF) Free Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in ISI Web of Science Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via ISI Web of Science (5) Citing Articles via Google Scholar Google Scholar Articles by Hussein, A.H. Articles by Rabenhorst, M.C. Search for Related Content PubMed Articles by Hussein, A.H. Articles by Rabenhorst, M.C. GeoRef GeoRef Citation Agricola Articles by Hussein, A.H. Articles by Rabenhorst, M.C.

DIVISION S-10-WETLAND SOILS

Modeling of Sulfur Sequestration in Coastal Marsh Soils

^a Dep. of Natural Resource Sci. and Landscape Architecture, Univ. of Maryland, College Park, MD 20742 USA

pedon{at}dnamail.com

In transgressive coastal areas, marshes form in response to sea-level rise and they generally represent an ideal environment for the sequestration of S species. Various predictions in rates of sea-level rise associated with global warming and concern for potential environmental problems from acid-sulfate weathering have prompted interest in modeling rates of S sequestration during coastal marsh pedogenesis. In this study, predictive models were derived for organic and pyrite S using data from pedons along two marsh transects in Dorchester County, MD. Organic S accumulates mainly in the organic horizons, and the rate is mainly driven by sea-level rise. Rates of organic S accumulation for the last 150 yr averaged 4.3 ± 1.19 g m^-2 yr^-1; before this, long-term rates ranged between 0.95 and 2.05 g m^-2 yr^-1. Pyrite S sequestration reflects accumulations both in organic horizons and in the submerged mineral soil. The rate of pyrite sequestration in organic horizons is generally driven by sea-level rise and the availability of reactive Fe. During the last 150 yr, the rates of pyrite accumulation averaged 7.2 ± 1.6 g m^-2 yr^-1; before this, long-term rates ranged between 0.53 and 1.14 g m^-2 yr^-1. Modeled predictions of pyrite and organic S accumulations in newly forming marshes during the next century were 15 ± 4.3 g m^-2 yr^-1 and 19 ± 8.2 g m^-2 yr^-1, respectively.

This article has been cited by other articles:

				R. E. Vaughan, B. A. Needelman, P. J. A. Kleinman, and M. C. Rabenhorst Morphology and Characterization of Ditch Soils at an Atlantic Coastal Plain Farm Soil Sci. Soc. Am. J., May 1, 2008; 72(3): 660 - 669. [Abstract] [Full Text] [PDF]

				A. H. Hussein, M. C. Rabenhorst, and M. L. Tucker Modeling of Carbon Sequestration in Coastal Marsh Soils Soil Sci. Soc. Am. J., September 1, 2004; 68(5): 1786 - 1795. [Abstract] [Full Text] [PDF]

				A. H. Hussein and M. C. Rabenhorst Modeling of Nitrogen Sequestration in Coastal Marsh Soils Soil Sci. Soc. Am. J., January 1, 2002; 66(1): 324 - 330. [Abstract] [Full Text] [PDF]

				A.H. Hussein and M.C. Rabenhorst Modeling the Impact of Tidal Inundation on Submerging Coastal Landscapes of the Chesapeake Bay Soil Sci. Soc. Am. J., May 1, 2001; 65(3): 932 - 941. [Abstract] [Full Text] [PDF]

				A.H. Hussein and M.C. Rabenhorst Tidal Inundation of Transgressive Coastal Areas: Pedogenesis of Salinization and Alkalinization Soil Sci. Soc. Am. J., March 1, 2001; 65(2): 536 - 544. [Abstract] [Full Text] [PDF]