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The release of reducing sugars and dissolved organic carbon from Spartina alterniflora Loisel in a Georgia salt marsh

Author(s): Pakulski JD

Abstract

Eight monosaccharides were found to be released from both tall and short forms of Spartina alterniflora during tidal submergence including: 2-d ribose, rhamnose, ribose, mannose, arabinose, fructose, galactose and xylose. Glucose was not detected in the leachate of either growth form. Two additional monosaccharides were found but were not identified. Losses of total reducing sugars (TRS) and total dissolved organic carbon (TDOC) ranged from 14–54 μgCg−1 dry wth−1 and 42 to 850 μgCg−1 dry wth−1, respectively. Losses of individual monosaccharides were generally <5μgCg−1 dry wth−1 and varied from 0·5–17 μgCg−1 dry wth−1. Differences were observed in seasonal patterns of losses between tall and short Spartina. Tall Spartina TRS losses peaked in midsummer, while in short Spartina TRS losses peaked in the spring and fall.

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