Test | Parameter | Estimate ± se | Df | F | P |
---|---|---|---|---|---|
Stable isotopic values of nitrogen (δ15N) | Intercept | 9.380 ± 0.772 | – | – | < 0.001 |
R2 = 0.21 | Sampling area | 0.238 ± 0.077 | 1 | 9.50 | 0.002 |
N = 236 | Sampling date | −0.210 ± 0.078 | 1 | 7.31 | 0.007 |
P < 0.001 | Sex | −0.086 ± 0.077 | 1 | 1.25 | 0.265 |
Df = 6 | Lateral plate morph - CPM* | 0.258 ± 0.135 | 1 | 2.37* | 0.095* |
 | Lateral plate morph - LPM* | −0.313 ± 0.149 | 1 | – | – |
 | Body length | 0.470 ± 0.164 | 1 | 8.21 | 0.005 |
Stable isotopic values of carbon (δ13C) | Intercept | −20.86 ± 0.943 | – | – | < 0.001 |
R2 = 0.20 | Sampling area | 0.193 ± 0.095 | 1 | 4.16 | 0.043 |
N = 236 | Sampling date | −0.474 ± 0.095 | 1 | 24.97 | < 0.001 |
P < 0.001 | Sex | 0.001 ± 0.094 | 1 | 0.00 | 0.988 |
Df = 6 | Lateral plate morph - CPM# | −0.117 ± 0.165 | 1 | 1.45# | 0.237# |
 | Lateral plate morph - LPM# | − 0.105 ± 0.182 | 1 | – | – |
 | Body length | 0.762 ± 0.201 | 1 | 14.45 | < 0.001 |