Bivalve abundances in shallow coastal bays in Northern Bohuslän

Abundance of bivalves in shallow soft-bottom in the area around Tjärnö, Rossö and Öddö in the Northern part of Bohuslän (Data_bivalves). Data from 25 sites that have been sampled by 5 replicate each. Data for individual replicates are given in number of individuals per square meter. Coordinates of sites and date of sampling in separate file (Data_sites). Sampling by pushing a plastic core (31cm diameter) 20 cm into the sediment and all material dug out and sieved through a 4mm mesh. Species names updated to current valid names on March 25th, 2025 . Data collected as part of degree project.