Table 3 Length (Li), width (Wi), mussel densities (di) and abundance (Ni) of dead empty shells of Mytilus edulis found as mono- and multi-layered bands accumulated nearly continuously along high-tide marks I found along the two stretches of beaches identified as I and II in Fig. 2, and estimated from ni quadrats of 25 cm × 25 cm, shown together with the percentage (%), number (Nc) and mass (Mc) of mussels of commercial size. The related minimum and maximum financial losses, respectively based on a market value of 4.5€ per kilogram of mussels of commercial size are also provided.
i | Beach | Li | Wi | ni | di(ind m−2) | Ni | %(>4 cm) | Nc(> 4 cm) | Mc(ton) (>4 cm) | Loss (€) | |||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Min | Max | Min | Max | Min | Max | Min | Max | Min | Max | ||||||
1 | II | 70 | 4 | 8 | 5600 | 6400 | 1.6 106 | 1.8 106 | 29 | 4.5 105 | 5.2 105 | 4.5 | 5.2 | 20,462 | 23,386 |
2 | II | 250 | 1 | 20 | 992 | 3200 | 2.5 105 | 8.0 105 | 28 | 6.9 104 | 2.2 105 | 0.7 | 2.2 | 3,125 | 10,080 |
3 | II | 250 | 2 | 18 | 544 | 3056 | 2.7 105 | 1.5 106 | 32 | 8.7 104 | 4.9 105 | 0.9 | 4.9 | 3,917 | 22,003 |
4 | II | 150 | 6.5 | 12 | 432 | 2400 | 4.2 105 | 2.3 106 | 34 | 1.4 105 | 8.0 105 | 1.4 | 8.0 | 6,444 | 35,802 |
5 | I | 800 | 0.5 | 30 | 1125 | 1749 | 4.5 105 | 7.0 105 | 28 | 1.3 105 | 2.0 105 | 1.3 | 2.0 | 5,672 | 8,817 |
6 | I | 975 | 1 | 30 | 1360 | 2133 | 1.3 106 | 2.1 106 | 30 | 4.0 105 | 6.2 105 | 4.0 | 6.2 | 17,901 | 28,080 |
4.3 106 | 9.2 106 | 1.3 106 | 2.8 106 | 12.8 | 28.5 | 57,521 | 128,167 | ||||||||
