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Table III.
Estimate of the mean monthly cost of AI surveillance in wild waterbirds on Lake Constance from September 2006 to August 2007 (€). The cost is shown for the different Surveillance System Components (SSC) used.
| SSC | September–April | May–August |
|---|---|---|
| Bycatch | 96 | 9 |
| Trap | 7 047 | 7 255 |
| Swan Catch | 3 079 | 4 070 |
| Found dead | 243 | 356 |
| Hunt | 874 | 0 |
| Sentinel | 7 981 | 7 981 |