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Valuation of Ecosystem Services and Social Choice: The Impact of Deliberation in the context of two different Aggregation Rules

Author

Listed:
  • Mariam Sy

    (MARBEC)

  • Charles Figuières

    (Axi-Marseille Université, AMSE)

  • Hélène Rey-Valette

    (Université de Montpellier, CEE-M)

  • Richard Howarth

    (Dartmouth College, Environmental Program)

  • Rutger De Wit

    (CNRS, MARBEC)

Abstract

This paper describes an empiric study of aggregation and deliberation – used during citizens' workshops – for the elicitation of collective preferences over 20 different ecosystem services (ESs) delivered by the Palavas coastal lagoons located on the shore of the Mediterranean Sea close to Montpellier (S. France). The impact of deliberation is apprehended by comparing the collectives preferences constructed with and without deliberation. The same aggregation rules were used before and after deliberation. We compared two different aggregation methods, i.e. Rapid Ecosystem Services Participatory Appraisal (RESPA) and Majority Judgement (MJ). RESPA had been specifically tested for ESs, while MJ evaluates the merit of each item, an ES in our case, in a predefined ordinal scale of judgment. The impact of deliberation was strongest for the RESPA method. This new information acquired from application of social choice theory is particularly useful for ecological economics studying ES, and more practically for the development of deliberative approaches for public policies.

Suggested Citation

  • Mariam Sy & Charles Figuières & Hélène Rey-Valette & Richard Howarth & Rutger De Wit, 2022. "Valuation of Ecosystem Services and Social Choice: The Impact of Deliberation in the context of two different Aggregation Rules," Working Papers 2022.05, FAERE - French Association of Environmental and Resource Economists.
    • Handle: RePEc:fae:wpaper:2022.05
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    References listed on IDEAS

    as
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    5. Sy, Mariam Maki & Rey-Valette, Hélène & Simier, Monique & Pasqualini, Vanina & Figuières, Charles & De Wit, Rutger, 2018. "Identifying Consensus on Coastal Lagoons Ecosystem Services and Conservation Priorities for an Effective Decision Making: A Q Approach," Ecological Economics, Elsevier, vol. 154(C), pages 1-13.
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    More about this item

    Keywords

    Services écosytémiques; Délibération; Agrégation;
    All these keywords.

    JEL classification:

    • Q57 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Environmental Economics - - - Ecological Economics

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