Les mortalites d'huitres en 1970

From the studies conducted in 1968 and 1969, it becomes clear that there was a relationship between the flat oyster mortalities that occurred during the summer in the Belon and Merrien rivers and the appearance of a hydrological phenomenon primarily characterised by an overhang of abnormally cold water. Because the events recorded in July 1970 confirm the data already acquired, we will summarise the observations made on that occasion by MARIN, PAULMIER OR GRAS.