Table 2. Mean biomass values (CPUEW) with standard errors and confidence intervals, in brackets, of the landed catch and of discards for the three gears.
| Site | GTR CPUEW |
LP CPUEW | SP CPUEW | |
|---|---|---|---|---|
| Landed catch |
M. di Ravenna | 5.41 ± 0.76 (3.92–6.89) | 7.27 ± 1.77 (3.81–10.73) | 3.72 ± 0.64 (2.48–4.97) |
| Senigallia | 4.34 ± 0.14 (2.16–6.52) | 2.41 ± 0.35 (0.23–4.59) | 3.08 ± 0.17 (2.20–3.97) | |
| Portonovo | 2.90 ± 0.70 (1.53–4.27) | – | 2.48 ± 0.59 (1.33–3.62) | |
| Discards | M. di Ravenna | 0.77 ± 0.20 (0.38–1.17) | 0.14 ± 0.04 (0.07–0.21) | 0.07 ± 0.05 (0.02–0.17) |
| Senigallia | 0.95 ± 0.57 (0.17–2.07) | – | 0.04 ± 0.0 (NA) | |
| Portonovo | 1.52 ± 0.79 (0.02–3.06) | – | 0.06 ± 0.0 (NA) | |
| Gear | CPUEW | |||
| Landed catch |
GTR | 4.35 ± 0.51 (3.35–5.34) | ||
| LP | 6.01 ± 1.39 (3.28–8.74) | |||
| SP | 3.21 ± 0.36 (2.49–3.93) | |||
| GTR | 0.95 ± 0.23 (0.51–1.40) | |||
| Discards | LP | 0.14 ± 0.04 (0.06–0.21) | ||
| SP | 0.06 ± 0.03 (0.01–0.12) |
Note:
GTR (trammel net), LP (large pot) and SP (small pot), at each site (top) and as a whole (bottom). NA (not available).