Frequency, Magnitude, and Possible Causes of Stranding and Mass-Mortality Events of the Beach Clam Tivela mactroides (Bivalvia: Veneridae - Turra, Alexander; Pombo, Maíra; Petracco, Marcelo; Siegle, Eduardo; Denadai, Márcia Regina; Fonseca, Mariana (PLOS one, San Francisco, 2016)