Table 2 Summary of tag detections at key locations and output of rule-based (RB) and pattern-recognition (PR) predator filters for 2016 San Joaquin Chinook salmon case study
From: Diagnosing predated tags in telemetry survival studies of migratory fishes in river systems
Statistic | No filter | Simple RB filter | Complex RB filter | Smolt-only PR filter | Multispecies PR filter |
|---|---|---|---|---|---|
Number of tags released (A0) | 648 | 648 | 648 | 648 | 648 |
Total number of tags classified in predator | 0 | 93 (14%) | 139 (21%) | 66 (10%) | 89 (14%) |
Total number of detection events classified in predator | Â | 314 (8%) | 396 (10%) | 324 (8%) | 386 (9%) |
Number of first-time predator classifications | Â | Â | Â | Â | Â |
 Upstream of Mossdale (A1–A5) |  | 12 | 17 | 5 | 19 |
 Mossdale through head of Old River (A6–A8/B1) |  | 39 | 67 | 15 | 20 |
 Undine Road to Howard Road (A9–A13) |  | 30 | 37 | 25 | 28 |
 Weston Ranch to Navy Bridge/Rough and Ready Island (A14–A17/R1) |  | 5 | 9 | 19 | 20 |
 Calaveras River to Turner Cut Junction (A18–A20/T1) |  | 7 | 8 | 2 | 2 |
 Head of Middle River (B2, C1) |  | 0 | 1 | 0 | 0 |
Number of total tag detectionsa: | Â | Â | Â | Â | Â |
 Banta Carbona (A5) | 470 | 467 | 467 | 470 | 465 |
 Mossdale (A6) | 416 | 415 | 415 | 416 | 415 |
 Lathrop (A8) | 250 | 249 | 246 | 249 | 247 |
 Old River East (B1) | 32 | 32 | 32 | 32 | 32 |
 Brandt Bridge (A12) | 108 | 106 | 105 | 104 | 99 |
 Garwood Bridge (A16) | 79 | 78 | 77 | 63 | 63 |
 Turner Cut Junction (A20/T1) | 26 | 24 | 26 | 20 | 20 |