Sulphur uptake by salt grasses,mangroves, and seagrasses in anaerobic sediments |
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| Authors: | Brian Fry Richard S Scalan JKenneth Winters Patrick L Parker |
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| Institution: | 1. Harbor Branch Foundation, Rt. 1, Box 196, Fort Pierce, Florida 33450 USA;2. University of Texas Marine Laboratory, Port Aransas, Texas 78373 USA;3. Coastal Science Laboratories, P.O. Box 1478, Port Aransas, Texas 78373 USA |
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| Abstract: | Stable sulfur isotope analyses show that rooted estuarine plants growing in anoxic sediments incorporate substantial amounts of 34S-depleted sulfides, or oxidation products thereof. In roots, this incorporation predominates over sulfate uptake from interstitial porewater. Either the plants incorporate normally toxic sulfides, or they are creating and using a specialized nutrient pool of oxidized sulfides at the root-sediment interface. |
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