Drought, Snails, and Large-Scale Die-Off of Southern U.S. Salt Marshes Brian R. Silliman, Johan van de Koppel, Mark D. Bertness, Lee E. Stanton, and Irving A. Mendelssohn Science 16 December 2005: 1803-1806. http://www.sciencemag.org/cgi/content/abstract/310/5755/1803