Fighting tools against water pollution (PART II) Examples of actions implemented in Brittany Bertrand Guizard DRAAF de Bretagne 28/01/2015 DRAAF Bretagne 1 Example 5 «Breizh-bocage» program The bocage as vector of reconquest of water quality 28/01/2015 DRAAF Bretagne 2 1
An endangered bocage (1) Constat alarmant de dépérissement du bocage Érosion de 1,1 % par an constatée entre les deux enquêtes successives de 1996 (207.398 km) et 2008 (182.530 km) X1000 km 250 200 150 100 Bretagne 50 0 1970 1980 1998 2008 28/01/2015 DRAAF Bretagne 3 An endangered bocage (1) A still important hedge linear, but aging, with many senescent trees 28/01/2015 DRAAF Bretagne 4 2
A regional program for the restauration of the breton bocage Breizh-bocage (1) recognition of the multifunctionality of the bocage Limitation of surface transfers of polluting substances : phosphorus, organic matters, pesticides; slowdown of floods Stops the soils erosion; biological corridors, physical connection between «biological reservoirs» Places of biodiversity Windbreakers and livestock shelters Production of energy and lumber beautiful countryside and natural scenery 28/01/2015 DRAAF Bretagne 5 Restauration of the bocage as a tool of protection of the soils and of waters 28/01/2015 DRAAF Bretagne 6 3
A regional program for the restauration of the breton bocage Breizh-bocage (2) 2007-2013 22 M FEADER, French State, Water Agency, Regional and Departmental concils Holders often similar to those of the GP5 (watersheds reprentatives) or groupings of communes About 55 facilitators 28/01/2015 DRAAF Bretagne 7 A three phased program Source DRAAF Saint Marc sur Couesnon Phase 1 : territorial study Phase 2 : Diagnostic-Action Phase 3 : works 28/01/2015 DRAAF Bretagne 8 4
Phase 2 : Diagnostic-Action Analysis of the situation and evaluation of the bocage evolution dynamic; Program of improvement Source : communauté de communes du pays de Bécherel réalisation Cyril Mainguy et Thierry Guéhenneuc 28/01/2015 DRAAF Bretagne 9 Phase 3 : works New hedges with or without banks Ancient Hedges restauration Travaux à Langouet Source DRAAF Restauration de talus à Irodouer Source DRAAF 28/01/2015 DRAAF Bretagne 10 5
Restauration of the bocage as a tool of protection of the soils and of waters Embankments perpendicular to the slope Création de haie-talus dans le cadre de Breizh-bocage Source Cœur-Émeraude 28/01/2015 DRAAF Bretagne 11 Restauration of the bocage as a tool of protection of the soils and of waters Planted embankments perpendicular to the slope Création de haie-talus dans le cadre de Breizh-bocage Source DRAAF-Romillé 28/01/2015 DRAAF Bretagne 12 6
Restauration of the bocage as a tool of protection of the soils and of waters Planted embankments perpendicular to the slope Progressive evolution of the lanscape Visible restauration of the bocage network 28/01/2015 DRAAF Bretagne 13 Restauration of the bocage as a tool of protection of the soils and of waters Coupling of hedgerows (low-laying grouds belts) with grass strips along the waterway Réalisation Breizh-bocage à Langouet Source DRAAF 28/01/2015 DRAAF Bretagne 14 7
Result of Breizh-bocage (march 2014) an important lineary of new hedgerows + 4000 km at the end of the program 28/01/2015 DRAAF Bretagne 15 Positive developments 28/01/2015 DRAAF Bretagne 16 8
Evolution of the nitrates concentrations Surface waters Evolution du nombre de stations par classe de qualité (Q90) 100% 90% 80% 70% 60% 50% 40% 30% > 50 mg/l > 25 mg/l et <= 50 mg/l > 10 mg/l et <= 25 mg/l > 2 mg/l et <= 10 mg/l <= 2 mg/l 20% 10% 0% 1989-1990 1990-1991 1991-1992 1992-1993 1993-1994 1994-1995 1995-1996 1996-1997 1997-1998 1998-1999 1999-2000 2000-2001 2001-2002 2002-2003 2003-2004 2004-2005 2005-2006 2006-2007 2007-2008 2008-2009 2009-2010 2010-2011 2011-2012 2012-2013 28/01/2015 DRAAF Bretagne 17 Evolution of the nitrates concentrations Distributed waters The community procedure C505/03 (about- quality of drinking waters) was closed in april 2006 28/01/2015 DRAAF Bretagne 18 9
Evolution of the phosphorus concentrations Surface waters 28/01/2015 DRAAF Bretagne 19 Evolution of the nitrates concentrations Surface waters 28/01/2015 DRAAF Bretagne 20 10
Thank you for your attention! 28/01/2015 DRAAF Bretagne 21 11