Long time series are of great interest in the study of climatic variability and its impacts on marine ecosystems.
Systematic observations, with a fixed temporal resolution, provide an average reference state, which allows us to determine the presence of natural or anthropogenic forcing, and any evolving trends, in the marine system.
For a number of years, scientists at the Biological Station have been monitoring core hydrological parameters, such as, temperature and salinity. The first data collected was in 1952, fromseveral sampling points offshore from Roscoff and around the Ile de Batz. More comprehensivestudies, integrating various biogeochemical parameters, started in 1985 and ran until 1992, under the direction of A Sournia.
Finally, in1997, the SOMLIT (low frequency data) network was launched, continuing on from the previous series. As such, for more than 60 years the marine ecosystem around Roscoff, typical of the Western English Channel, has been studied without interruption.
The next stage of these biogeochemical observations, which has already started in the SBR, is the deployment of various instruments to obtain autonomous and high frequency measurements.