Sed si ille hac tam eximia fortuna propter utilitatem rei publicae frui non properat, ut omnia illa conficiat, quid ego, senator, facere debeo, quem, etiamsi ille aliud vellet, rei publicae consulere oporteret?

Illud tamen clausos vehementer angebat quod captis navigiis, quae frumenta vehebant per flumen, Isauri quidem alimentorum copiis adfluebant, ipsi vero solitarum rerum cibos iam consumendo inediae propinquantis aerumnas exitialis horrebant.

For additional information

View or download the complete PDF of the case study.

Date: 2012/2015

The work presented here has been developed in six case studies of the VALMER Interreg 4A Channel project (2012-2015).

Coordination by M. Philippe, J. Ballé-Béganton and D. Bailly based on written contributions from J. Herry and M. Philippe

Site description

The Golfe du Morbihan is located in south Brittany, in the Morbihan Department. The boundary of the case study site is the Parc Naturel Régional du Golfe du Morbihan. The area includes 30 municipalities and an associated marine area of 125 km2. This marine area is connected to the Atlantic Ocean by a narrow channel. The Golfe du Morbihan is famous for its large richness of biodiversity, natural and cultural heritage, with various habitats (mudflats, rocky foreshores, seagrass beds, etc.) and landscape. The population is about 166 000 inhabitants and it has multiplied by a factor of eight in the last forty years. Many professional and leisure activities coexist and include shellfish farming, fishing, tourism, sailing etc. The pressure for living-space for people and space for commercial activity impacts on the natural environment, both terrestrial and marine.

Focus of study

Seagrass beds are sensitive to pressures impacting environment quality (e.g. lack of light, herbicides, trampling, grubbing, etc.). Due to their high ability to regenerate in a healthy environment, they are used as a water quality indicator for the European Water Framework Directive. In order to reconcile the environmental conservation with activity development of activities, the Regional Natural Park decided to experiment the Ecosystem Services Approach put forward in the VALMER project. The Ecosystem Services Approach was designed to:

  1. raise awareness on seagrass issues
  2. improve the management of seagrass beds through an integrated assessment
  3. identify management options to facilitate trade-offs.

Key stakeholders and their involvement

The Parc Naturel Régional du Golfe du Morbihan has developed a broad and participative approach to gather all the stakeholders concerned by the conservation of seagrass beds: elected members, professional representatives, NGOs, recreational activities, citizens, scientists, managers, etc.

Seagrass event, 4th Dec 2014, Golfe du Morbihan

Approach for Ecosystem Services Assessment

Combination of assessment methods: interviews, workshops, focus groups, conceptual modelling, development of knowledge integration and sharing platform and choice experiments surveys.

Photo: © D. Lédan / SIAGM PNRGM  | Air Papillon | Ji-Elle / Wikimedia Commons