Table 1.

Areas for shellfish farming in the Gulf of La Spezia: they are divided into 7 monitoring stations (zone). Sampling points are identified by the geographical coordinates.

Area	Zone	Geographical coordinates
Portovenere Bay	PORT 1	Lat 44.057892 N Long 9.843861 E
	PALM 3	Lat 44.050794 N Long 9.850206 E
Outer Dam	DFPI 5	Lat 44.072528 N Long 9.858883 E
	DFCI 6	Lat 44.075725 N Long 9.865947 E
	DFLI 7	Lat 44.078431 N Long 9.871744 E
	DFLE 8	Lat 44.077233 N Long 9.880128 E
	DFPE 9	Lat 44.070111 N Long 9.862522 E