Table 2.
Assignment conditions adopted for stable isotope-based location of puffins and razorbills against isoscapes derived from jellyfish tissue [58]
| Variable | Isoscape Jellyfish | Seabird Assignment | |||
|---|---|---|---|---|---|
| Puffin | Razorbill | ||||
| 2007/08 | 2014/15 | 2007/08 | 2014/15 | ||
| Measurement error (σ) | δ13C & δ15N: 0.2 | δ13C & δ15N: 0.2 | |||
| Between-individual variance (measured) | δ13C: 0.78, δ15N: 1.02 |
δ13C: 0.60, δ15N: 2.74 |
δ13C: 0.52, δ15N: 0.91 |
δ13C: 0.63, δ15N: 2.10 |
δ13C: 0.51, δ15N: 0.58 |
| Calibration-Offset and variance values | NA | Derived – see Results Table 3 below. | |||
| Threshold odds ratio | NA | 1.42 | |||