Ancient Clam Gardens Increased Shellfish Production: Adaptive Strategies from the Past Can Inform Food Security Today Groesbeck, Amy S. ; Rowell, Kirsten ; Lepofsky, Dana ; Salomon, Anne K. Abstract Publication: PLoS ONE Pub Date: March 2014 DOI: 10.1371/journal.pone.0091235 Bibcode: 2014PLoSO...991235G