Figure 3

The area of convex hulls (TA) ofδ¹³C and δ¹⁵N values plotted by dashed lines according to the four size groups of black amur bream. The area of standard ellipse (SEA_c) is drawn by solid line, and contains 40% of the data. This figure created using R software version 3.6.1 (https://www.r-project.org/).