Acknowldgments

The authors' research in the Hudson River Estuary has been generously supported by the Hudson River Foundation. We are grateful to our colleagues R. Aller, H. Bokuniewicz, R. Flood, R. Wilson, R. Geyer, and G. Kineke for discussions and to M. Wiggins, K. Roberts, and E. Goldsmith for their support in the field and laboratory.

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