ECASA.org.uk

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ECASA.org.uk

• Ecosystem approach for a sustainable aquaculture
• STREP (FP6, Priority 8)

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Les objectifs dECASA

• Identifier des indicateurs quantitatifs et
  qualitatifs des effets de laquaculture sur
  lenvironnement et réciproquement. Évaluer leur
  applicabilité.
• Développer des outils opérationnels, y compris
  des modèles, pour déterminer et décrire les
  interactions entre les conditions
  environnementales et les activités aquacoles, à
  travers différents écosystèmes et systèmes de
  production aquacoles.
• Développer une méthodologie pour les études
  dimpact environnemental et la sélection de
  sites, dans le cadre dune gestion de la bande
  côtière

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Interactions entre les Workpackages
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ECASA Methodology for selecting indicators
The use of frameworks
1. DPSIR framework
2. Framework of European marine Aquaculture
3. ECASA framework
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ECASA framework for an ecosystem approach
Sediment biogeochemistry Benthic flora and
fauna Biomarkers Escapes Water quality and
pelagic ecosystem Coastal zone management Socio
economy
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The processus for selecting indicators
1- Proposals from partners experience and
expertise
The main questions
Frameworks belonging? Species and
environments? Indicators computations? Significanc
e of indicators? Interpreting the results values
and thresholds? Criteria for a Quality Assesment
of indicators?
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The processus for selecting indicators
2- Subgroup evaluation, From ECASA partners
Each subgroup has selected the most pertinent
indicators, based on a processus of consensus
among the partners members of the subgroup
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The processus for selecting indicators
3- Field testing in aquaculture sites
Ten sites were chosen in European waters
The main species of fishes and shelfish were
covered
The main aquacultural techniques used in Europe
were studied
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The processus for selecting indicators
4- Stakeholders comments on the list of
indicators for an ecosystem approach of
aquaculture impact
The Heraklion meeting
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Results
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Results
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Results
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Examples of indicators
From a site of mussels long lines
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Examples of indicators
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Consequence assessment indicator of growth
effect as a function of density and lease size
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0.5
0.75
4.5
0.6
0.55
0.7
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0.65
0.8
0.85
3.5
0.6
0.75
Multiplication factor of lease size
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0.7
0.65
0.8
2.5
0.7
0.75
0.85
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0.9
0.8
0.75
1.5
0.85
0.8
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Multiplication factor of mussel density
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Indicators are good communication tools, easy to
understand and to appropriate
In the view of an ecosytem approach There is
need for a set of indicators covering the main
sustainability issues
Indicators only indicate, describe, testify, but
they cannot predict.
gt Together with the modelling process, They
are an essential part of the ECSASA toolbox
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Thank You