Export of lead from salt marshes |
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Authors: | M Banus I Valiela JM Teal |
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Institution: | Boston University Marine Program, Marine Biological Laboratory, Woods Hole, Mass. 02543, USA;Woods Hole Oceanographic Institution, Woods Hole, Mass. 02543, USA |
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Abstract: | Lead accumulates in shallow salt marsh sediments and is taken up by grasses. Since about half of the annual grass crop is transported to the sea after the grass dies, this may contribute to the movement of lead to deeper waters. Where nitrogen additions increase the biomass of grasses, or where very heavy lead contamination takes place, substantial amounts of lead may be removed by tides from the marsh surfaces. |
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