Acknowledgments

The authors wish to gratefully acknowledge the staff of the Rockefeller Wildlife Refuge and Coastal Protection and Restoration Authority of Louisiana for granting access to the refuge and providing sampling assistance. In particular, we wish to thank Leigh Ann Sharp, George Melancon, and Mark Mouledous for assistance in the field. We appreciate the assistance of several USGS staff members and student interns for laboratory set-up and sample processing, most notably Molly McLaughlin, Meghan Maraia, Tom Harmon, Carl Taylor and Chandra Dreher. We wish to thank Marci Marot for the radioisotope analyses.

We are indebted to the thoughtful comments from U.S. Geological Survey reviewers Arnell Forde, Nancy DeWitt, and Stokely Klasovsky.