This dataset includes the survey data that were commissioned and collected by Countryside Council for Wales.

The monitoring at station SOMLIT-Astan (north of Roscoff - France, Western English Channel) was designed to study long term changes in phytoplankton communities in a global change context (diversity, phenology).

These inventories list marine species observations performed in the Roscoff area since 1830. Observations result from a review of historical literature and observations made by voluntary contributors and the scientific teams of the Roscoff Marine Station. Taxonomic groups documented in the inventories are macroalgae, marine benthic macroinvertebrates and fish. Inventories provide information (when known) about: location, collection date, collection type, collector, and species biology (habitat, reproduction period).