Table 5
Stable isotope niche metrics for allopatric and sympatric populations of Atlantic salmon and brown trout in the Teign where length: mean fork length (± 95 % CI), TA: the total area of the convex hull encompassing the data points, SEA: the Standard Ellipse Area containing 40% of the data, SEAC: Correction applied to SEA to account for small sample sizes, and the Bayesian estimate for SEA (SEAB) expressed as their 95% credible intervals.
| Context | Species | N | Length (mm) | δ13Ccorr | Trophic position | TA | SEA | SEAC | SEAB (95%CI) |
|---|---|---|---|---|---|---|---|---|---|
| Sympatric | Salmon | 45 | 99 (4) | 0.56 (0.1) | 3.78 (0.1) | 2.39 | 0.63 | 0.64 | 0.46 − 0.84 |
| Trout | 45 | 135 (8) | 1.51 (0.1) | 3.41 (0) | 2.09 | 0.62 | 0.63 | 0.45 − 0.82 | |
| Allopatric | Salmon | 33 | 82 (5) | 0.43 (0.1) | 3.82 (0) | 1.31 | 0.39 | 0.40 | 0.27 − 0.54 |
| Trout | 57 | 122 (6) | 1.37 (0.1) | 3.42 (0.1) | 2.32 | 0.44 | 0.44 | 0.33 − 0.57 | |
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