marginally significantp = .04
There was a marginally significant positive relationship between δ 15 N and length for A. nigricans ( F 1,13 = 5.10, R 2 = .28, p = .04) and a significant negative relationship between δ 34 S and length for C. viridis ( F 1,16 = 10.38, R 2 = .39, p = .005) (Figure S1 ).