Modelling with stakeholders to integrate biodiversity into land-use planning - Lessons learned in Réunion Island (Western Indian Ocean)

  • Authors:

  • Erwann Lagabrielle;Aurélie Botta;Williams Daré;Daniel David;Sigrid Aubert;Christo Fabricius

  • Affiliations:

  • Nelson Mandela Metropolitan University, Saasveld Campus, Private Bag X6531, George 6530, South Africa and CIRAD, Université de la Réunion, UMR PVBMT, 7 chemin de l'IRAT, Ligne Paradis, 9 ...;CIRAD, UPR GREEN, Campus International de Baillarguet, TA C-47/F-34398 Montpellier, Cedex 5, France;CIRAD, UPR GREEN, Pôle REAGIR, Station de La Bretagne, BP 20, 97408 Saint-Denis Messagerie, Cedex 9, France;Université de la Réunion, EA2525 LIM IREMIA, 2 rue Joseph Wetzel, 97490, Sainte-Clotilde, La Réunion, France;CIRAD, UPR GREEN, Ampandrianomby, B.P. 853-99 Antananarivo, Madagascar;Nelson Mandela Metropolitan University, Saasveld Campus, Private Bag X6531, George 6530, South Africa

  • Venue:
  • Environmental Modelling & Software
  • Year:
  • 2010

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Abstract

This paper considers participatory modelling to integrate biodiversity conservation into land use planning and to facilitate the incorporation of ecological knowledge into public decision making for spatial planning. Reunion Island has experienced rapid urban and agricultural expansion, which threaten its unique biodiversity. In this context, we designed three participatory modelling sequences, involving overall 24 multidisciplinary researchers and stakeholders. The sequences aimed: (1) to map land-use and biodiversity, (2) to develop a conservation plan following systematic conservation planning principles using a spatial optimization tool (MARXAN) and (3) to simulate coupled land-use/conservation scenarios using a multi-agent system (MAS). The conservation plan confirms that priority areas for biodiversity protection are located on the coast where rapid land-use changes occur. Nevertheless, stakeholders from the urban and agricultural sector did not participate to this sequence. Indeed, conservation planning tools are useful to locate conservation priorities but they have to be designed with stakeholders to be accepted as negotiation tool. Besides, the researchers engaged in this second sequence were perceived as conservation stakeholders rather than holders of scientific knowledge. In the third sequence, the researchers involved adopted the stance of facilitating the elicitation of each stake and gathered trust from stakeholders. Overall, we conclude that the participatory development of land-use simulation models should be promoted to explore alternative scenarios for biodiversity conservation with stakeholders. In a situation of land-use conflict, a gradual and sequential participatory modelling approach should be implemented to fit into public decision-making processes.