Data/hora: 14/06/2024 15:55:01

Provedor de dados: | 5
País: | France
Título: | Réseau Hydrologique Littoral Normand (RHLN) : Rapport 2006 : Cycles hydrobiologiques annuels 2001-2005, évaluation des niveaux trophiques et proposition de réseau hydrologique de suivi de la qualité des masses d'eau DCE pour l'année 2007
Autores: | Le Goff, Ronan; Riou, Philippe.
Data: | 2006-12
Ano: | 2006
Palavras-chave: | RHLN; Réseau hydrologique; DCE; Grille d évaluation de l'eutrophisation; Eutrophisation; Baie de Seine; Normandie; Hydrobiologie; Hydrologie; Ecosystème côtier.
Resumo: | The Hydrological Network of the Normandy Shoreline (RHLN) was created in September/October 2000 with the dual objective of (1) making it possible to assess the trophic level of the Normandy shoreline's water masses and (2) to define the long-term hydrological monitoring network that can meet the requirements of the Water Framework Directive (WFD) starting in 2007/2008. This report summarises the results obtained between 2000/2001 and 2005.  The first part of the report describes and compares seasonal and inter-year variations of hydrobiological cycles in assorted water masses in Normandy.  The second part of the report assesses the trophic level of Norman water masses by means of indicators proposed by RHLN 2001/2003 (Daniel 2004), and taken up among the proposals of the "phytoplankton" group of French experts in mid-2005, as well as those proposed by the European group at the end of 2006. This new year of monitoring confirms the official report already established in the preceding years of the existence of a gradient of eutrophication all along the Norman coasts, from the water masses of the west Cotentin ranked as being in good or very good condition, up to the area of the Seine's estuary, ranked in mediocre to bad condition. On the other hand, the phenomena of dystrophy are less pronounced in 2005, a new year with little rainfall after those of 2003 and 2004.  Finally, the third part introduces a format proposal from the RHLN to be conducted over the period 2007 (with what we knew at the end of December 2006 about the MEDD's circular project that will set the parameters to follow, the frequency of monitoring, and the indicators to be used), in order to respond to the requirements of the WFD in Normandy and contribute to the assessment of the efficiency of clean-up policies and of nutrient flow reduction conducted in the catchment basins of the Seine-Normandy district.
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/2006/rapport-2399.pdf
Relação: | http://archimer.ifremer.fr/doc/00000/2399/
Formato: | application/pdf