The data set include the phytoplankton cell abundance (cell/ml) and size distribution of cells ranging from 0.5 µm to 158 µm in equivalent spherical diameter. The data were obtained from surface samples collected in a central station (42°14.09'N, 8°47.18'W) of Ría de Vigo (NW Iberian peninsula) during weekly/monthly samplings in two time series: July 2001 - July 2002 and April 2021 - May 2022.

This dataset has been carefully reviewed and curated in accordance with PANGAEA's exceptionally high quality standards. However, due to discontinued communication from the authors' side, it did not receive the usual formal approval by the authors and therefore lacks final scientific validation.