Fig. 2 Result of analysis (IMAGE) Research Institute for Humanity and Nature Caption Fig. 2 Four modes of variability for carbon and nitrogen stable isotope ratios (δ¹³C and δ<sub>15</sub>N) of vertebral sectional collagen of Japanese flounder in Sendai Bay, Japan, obtained by nonlinear time-series analysis. Vertebral section numbers start at the center of the vertebral centrum and increase toward the margin. Vertical lines show estimated breakpoints between years one, two, and three of individuals (i.e., vertebral section numbers 6,12, and 18). For example, individuals in N55 showed lower δ<sub>15</sub>N values than those in other sampling sites throughout most of their lifetimes in the mode 1, indicating that the mode 1 shows individual differences among sites. Credit Yoshikazu Kato Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.