Rapid Environmental Change over the Past Decade Revealed by Isotopic Analysis of the California Mussel in the Northeast Pacific
Figure 2
The δ18O for inner shell material of the same M. californianus from Tatoosh Island.
a. The δ18O (‰, PDB scale) for inner shell material from 663 to 2009 AD with shells as shown in Fig 1. Figure key is identical to Fig 1. b. An expanded scale for archival and modern shells. The slope of δ18O with year for modern shells is not significant (0.006 ‰ yr−1, se = 0.008, df = 85, p = 0.469).