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A co-modelling process of social and natural dynamics on the isle of Ouessant: Sheep, turf and bikes ArchiMer
Rouan, Mathias; Kerbiriou, Christian; Levrel, Harold; Etienne, M.
An interdisciplinary team has applied the multi-agent system formalism to study shrub encroachment in the Biosphere Reserve on the isle of Ouessant. The main goals were (1) to understand vegetation dynamics, and (2) to represent how main agents, or actors view the dynamics of natural resources in relation to their own living practices. The management strategies established for each type of stakeholders were formalised and the impact of these strategies on biodiversity was analyzed at various temporal and spatial scales. Following a short description of the model, three aspects of the modelling process are discussed in more detail: the use of the chough (Pyrrhocorax pyrrhocorax) population as a representative variable for the interactions between...
Tipo: Text Palavras-chave: Companion modelling; Agent-based model; Biodiversity; Social dynamics; Shrub encroachment; Biosphere Reserve.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00009/11992/9059.pdf
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Balancing state and volunteer investment in biodiversity monitoring for the implementation of CBD indicators: A French example ArchiMer
Levrel, Harold; Fontaine, B.; Henry, Pierre-yves; Jiguet, Frederic; Julliard, Romain; Kerbiriou, Christian; Couvet, Denis.
According to the Convention on Biological Diversity (CBD), states have to provide indicators in order to assess the performance of their initiatives for halting the loss of biodiversity. Sixteen headline indicators have been identified for monitoring the CBD targets. Of these indicators only one, "Trends in the abundance and distribution of selected species," is a direct headline indicator of "non-exploited" biodiversity. In France, the implementation of this indicator is completely dependent on data collected by volunteers. Since this investment of volunteer time is equivalent to savings in administrative costs, we attempt in this paper to assign it a monetary value. This enables us to estimate how much the French administration saves thanks to volunteer...
Tipo: Text Palavras-chave: Biodiversity monitoring; CBD indicators; Citizen science; Replacement cost.
Ano: 2010 URL: http://archimer.ifremer.fr/doc/00006/11694/8614.pdf
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Co-Modeling Process, Negotiations, and Power Relationships: Some Outputs From a MAB Project on the Island of Ouessant ArchiMer
Levrel, Harold; Etienne, Monique; Kerbiriou, Christian; Le Page, Christophe; Rouan, Mathias.
For many conservation scientists, interdisciplinarity and participation can be efficient in the management of biodiversity. For both methods, new tools and new participative processes such as the so-called co-modeling process are required. The key questions addressed in this article are how group dynamics shape the model and why certain perspectives dominate in a process designed to be democratic. It is necessary, therefore, in order to appreciate the design and the legitimacy of the model that has been co-constructed, to address the questions of both the stakeholders' interests and their status in the process. Our case study is a co-modeling program based in a French biosphere reserve. It enabled us to highlight the key role of the mediator who had to...
Tipo: Text Palavras-chave: Power relationships; Participation; Multi agent system; Co modeling; Co adaptive management.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6153.pdf
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OECD pressure-state-response indicators for managing biodiversity: a realistic perspective for a French biosphere reserve ArchiMer
Levrel, Harold; Kerbiriou, Christian; Couvet, Denis; Weber, Jacques.
Sustainability is said to be the science of integration, be it integration of scale, discipline or of stakeholders' interests. One way to integrate such diverse elements is to develop sustainable development indicators. Numerous national and international organizations have attempted to develop such indicators, among which interaction indicators are of critical importance because they enable us to link up human activities, ecological dynamics, and social goals. Among the various ways to develop such indicators, the most common ones are the pressure-state-response (PSR) indicators, as well as others coming from this framework. With realistic methodology one shall observe how PSR indicators might appear as an operational tool to face rapid social and...
Tipo: Text Palavras-chave: Biodiversity; Adaptive management; PSR indicators; Interaction indicators.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6545.pdf
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