Striped venus clam (Chamelea gallina) abundance, size, and biomass off Bevano River mouth (2019)

This dataset provides the abundance (ind. m-2) of the striped venus clams, Chamelea gallina (Linnaeus, 1758), at 71 random sampling points (Fig. 3) from 0.5 to 8 m depth along the coast (5 km) off the NATURA 2000 site IT4070009 "Ortazzo, Ortazzino e Foce del Torrente Bevano", sampled from 22 May to 4 July, 2019. Where available, the mean and standard deviation of shell length (i.e. the maximum distance between anterior and posterior margins) of Chamelea gallina determined to the nearest 0.01 mm using a manual calliper, and the wet biomass per square metre (g m-2), estimated on the basis of the mean shell length, by length–weight relationship (according to Petetta et al., 2019), were provided. Depth, sediment grain size, and organic matter at each point are also provided.