90th percentile of turbidity calculated during the productive period of the WFD (March-October) from 2015 to 2020, from the MODIS algorithm processed by OC5 IFREMER/ARGANS (Gohin et al 2002, Gohin 2011).

Average monthly turbidity maps made during the period 2003-2010. Turbidity is estimated from the concentrations of inorganic suspended materials and chlorophyll-a.

90th percentile of non-algal suspended matter calculated during the productive period of the WFD (March-October) from 2015 to 2020, from the MODIS algorithm processed by OC5 IFREMER/ARGANS (Gohin et al 2002, Gohin 2011).

90th percentile calculated during the productive period of the WFD (March-October) from 2015 to 2020, from the MODIS Chl-a algorithm processed by OC5 IFREMER/ARGANS (Gohin et al 2002, Gohin 2011).

Map of average monthly non-algal suspended matter carried out in the period 2003-2010. TSS are estimated from the water reflectance using a specific algorithm developed at Ifremer.

Monthly mean of Suspended Particulate Matter (2002-2012) using Han (2016) algorithm for coastal areas, at global scale, for MERIS sensor, with POLYMER atmospheric corrections. Ref: Bing Han, Hubert Loisel, Vincent Vantrepotte, Xavier Mériaux, Philippe Bryère,Sylvain Ouillon, David Dessailly, Qianguo Xing and Jianhua Zhu. Development of a Semi-Analytical Algorithm for the Retrieval of Suspended Particulate Matter rom Remote Sensing over Clear to Very Turbid Waters Remote Sens. 8, 211; doi:10.3390/rs8030211 2016

Monthly mean of chlorophyll-a (2002-2012) from Gohin (2002), for coastal areas, at global scale, for MERIS sensor, with POLYMER atmospheric corrections. Ref: F. Gohin , J. N. Druon & L. Lampert, A five channel chlorophyll concentration algorithm applied to SeaWiFS data processed by SeaDAS in coastal waters. IJRS Volume 23, 2002 - Issue 8 http://dx.doi.org/10.1080/01431160110071879 2002

Monthly maps of mean chlorophyll-a achieved over the period 2003-2010. Chlorophyll-a is calculated using the OC5 algorithm developed by Ifremer.

REPHY is a national network covering the coast of the French mainland along with that of three of its overseas departments: Martinique, Guadeloupe and Reunion Island. The aims are as follows: - to observe all phytoplankton species in the coastal waters and to monitor events such as coloured water, exceptional blooms, and the proliferation of species which are toxic or disruptive to marine fauna, - Particularly to monitor species producing toxins which are dangerous to shellfish consumers . These objectives are complementary, as the regular monitoring of all phytoplankton species makes it possible to detect known toxic and invasive species, but also to detect potentially toxic species. It is the presence of these toxic species in the water which triggers the monitoring of toxins in shellfish. The mission of REPHY is to monitor shellfish in their natural environment (such as parks and deposits). For shellfish removed from marine environments (that is to say in shellfish logistics establishments or on markets prior to export), national monitoring and control plans are organised by the General Food Directive at the French Ministry of Agriculture. Analyses are performed by the accredited departmental veterinary laboratories as organised by the National Reference Laboratory from the French Food Safety Agency.