Drawing lessons from a pluridisciplinary approach associating stakeholders for a better management of a bivalve population (French Atlantic coast)?
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Article de revue
Ce document a été publié dans
Estuarine, Coastal and Shelf Science. 2021-01-01p. 107194
Résumé en anglais
Initially introduced for aquaculture purposes in the 70's on French territory, Manila clam (Ruditapes
philippinarum) is now a neonatural resource within Arcachon Bay (SW of France). Its exploitation by
professional ...Lire la suite >
Initially introduced for aquaculture purposes in the 70's on French territory, Manila clam (Ruditapes
philippinarum) is now a neonatural resource within Arcachon Bay (SW of France). Its exploitation by
professional fishermen represents around 300–450 tons per year and involves around 60–70 licenses
depending on the year. The management of this species relies on both European and regional scale
decision. In 2000, a partnership between professionals and scientists was established in order to
implement a sustainable management of this resource. Since then, a co-organized biannual survey has
been performed to assess clam stock. Working groups and research programs were concomitantly
developed.
Initially stakeholders requested this survey only to assess clam stock in the bay. Nowadays, an integrative
approach of the population functioning is privileged. Such approach is particularly relevant for population
with high spatial and temporal distribution variations.
The main considered drivers are diseases including constant infection by Perkinsus but also the discovery
of a recently described pathology - BMD (Brown Muscle Disease), other environmental factors (i.e. trophic
resources, hydrodynamic conditions, temperature …) and professional fisheries. Alternatively to classical
stratified random sampling, the survey method is currently improved to optimize the sustainable
management of this resource. New spatially balanced sampling design showed promising results
increasing the efficiency of this survey. Knowledge is mobilized not only to meet the needs for expertise
expressed locally but also at the national level.
This paper aims to introduce how the different disciplines are combined to understand the dynamics of
Manila clam population within its environment and how stakeholders are involved to ensure her
sustainability and to improve management between users. Successes and failures are identified, as well
as the points of improvement for future actions.< Réduire
Mots clés en anglais
Co-management
Collaborative process
Manila clam fisheries
Ruditapes philippinarum
Arcachon bay
Integrative approach