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Artigas, Uruguay

Grosskopf H.M.,Instituto Plan Agropecuario | Arbeletche P.,University of the Republic of Uruguay | Bommel P.,CIRAD - Agricultural Research for Development | Bommel P.,University of Brasilia | And 4 more authors.
Cahiers Agricultures | Year: 2010

The global change transforms the Uruguayan rural society with effects on rangeland management. Based on companion modeling and ABM, the authors present the global change drivers identified by the local actors: increasing price of commodities due to global economy, globalization of decision making process, rural exodus and attractive urban life conditions, network companies as a new actor in rural productive process, biotechnical and climatic changes. Modeling is a tool to share information and for local actor capacity building, at the same time. It helps to identify some key-elements of policy for sustainability. Source


Leclerc G.,CIRAD - Agricultural Research for Development | Bomme P.,University of Brasilia | Gibon A.,French National Institute for Agricultural Research | Lasseur J.,French National Institute for Agricultural Research | Morales H.,Instituto Plan Agropecuario
Cahiers Agricultures | Year: 2010

Participatory modelling has to deal with strong constraints related to the expression and sharing of viewpoints and to the intelligibility of models, which implies that simplifications and trade-offs must be made. Our hypothesis is that the mediation that takes place during the foresight process helped by simulation is effective in highlighting the main issues at the local/regional scale, as well as the more probable adaptation strategies, thus making it possible to validate issues found for other scales of analysis. We analyze the foresight processes in five companion modelling (ComMod) projects on the co-evolution of extensive husbandry systems (EHS) and territories scale in France, Senegal, Brazil, Uruguay and Argentina. The processes are broken down according to the scenario study objectives, to the method of construction and to the parameters associated with models and simulations. Comparative analysis contributes to improving the design of future ComMod experiments on EHS and reveals a more operational definition of local, regional and global issues which the EES of these regions will face in the next decade. Source


Picasso V.D.,University of the Republic of Uruguay | Modernel P.D.,University of the Republic of Uruguay | Modernel P.D.,Wageningen University | Becona G.,Instituto Plan Agropecuario | And 3 more authors.
Meat Science | Year: 2014

Livestock production has been challenged as a large contributor to climate change, and carbon footprint has become a widely used measure of cattle environmental impact. This analysis of fifteen beef grazing systems in Uruguay quantifies the range of variation of carbon footprint, and the trade-offs with other relevant environmental variables, using a partial life cycle assessment (LCA) methodology. Using carbon footprint as the primary environmental indicator has several limitations: different metrics (GWP vs. GTP) may lead to different conclusions, carbon sequestration from soils may drastically affect the results, and systems with lower carbon footprint may have higher energy use, soil erosion, nutrient imbalance, pesticide ecotoxicity, and impact on biodiversity. A multidimensional assessment of sustainability of meat production is therefore needed to inform decision makers. There is great potential to improve grazing livestock systems productivity while reducing carbon footprint and other environmental impacts, and conserving biodiversity. © 2014 Elsevier Ltd. Source


Dieguez Cameroni F.J.,Instituto Plan Agropecuario | Terra R.,University of the Republic of Uruguay | Tabarez S.,University of the Republic of Uruguay | Bommel P.,CIRAD - Agricultural Research for Development | And 6 more authors.
Agricultural Systems | Year: 2014

Agricultural production in "open-sky systems" such as extensive cattle ranching on natural grasslands is subject to inter-annual climatic variability and other market fluctuations. To tackle the dependency of livestock breeding on these factors, we conducted participatory modeling with cattle producers in Uruguay. The methodology consists of simulating possible scenarios to collectively evaluate the different herd management practice alternatives. In this paper, we present an Agent-Based Model built with stakeholders and designed to represent a breeding system on a typical extensive grazing area in the basaltic soils region (BR) of Uruguay. This model has three main modules: environment, biophysical and decisional sub-models. This modularity allows the conducting of virtual experiments to reveal how some herd management decisions (such as seasonal stocking rate adjustments) combined with a climatic series can result in resilience against drought periods and market movements. Long-term simulations were implemented to analyze the sensitivity of the model to key management parameters with varying climate conditions. The inter-annual climatic variability can seriously affect cattle production, even with conservative stocking rates. Rigid strategies are bound to fail and cause systems to break. Adaptive management emerged as a critical option for the sustainability of livestock breeding. The inter-annual climatic variability can seriously affect cattle production, even with conservative stocking rates. This result highlights the importance of adaptive management, one that can react to a changing environment, for the sustainability of livestock breeding. © 2014 Elsevier Ltd. Source


Bommel P.,CIRAD - Agricultural Research for Development | Bartaburu D.,Instituto Plan Agropecuario | Duarte E.,Instituto Plan Agropecuario | Montes E.,Instituto Plan Agropecuario | And 4 more authors.
JASSS | Year: 2014

This paper focuses on the collective design and immediate execution of an agent-based model (ABM) by dynamically interpreting the activity diagrams of agent behaviours. To reach this objective, we have implemented an ABM of livestock producers facing drought conditions in Uruguay. The first step consists in implementing a standard ABM with pasture growth, herd dynamics and simple agents roughly imitating farmers' strategies. The second step is more participative since it consists in assessing the model with the real cattle farmers. As with most modelling processes, this evaluation phase requires feedback on model design. In order to make this assessment more lively and efficient, we have conceived a tool for drawing diagrams that can be immediately interpreted by the agents. Thanks to this new editor, the actors have quickly understood how the model worked and were able to criticize and modify it. Thus, this innovative modelling tool enables the involvement of stakeholders in co-designing ABM for participatory foresight studies. We hope it will facilitate the emergence of new and more efficient practices for farm management that can account for climate changes. © JASSS. Source

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