Biocomplexity of deforestation in the Caparo tropical forest reserve in Venezuela: An integrated multi-agent and cellular automata model

  • Authors:

  • Niandry Moreno;Raquel Quintero;Magdiel Ablan;Rodrigo Barros;Jacinto Dávila;Hirma Ramírez;Giorgio Tonella;Miguel F. Acevedo

  • Affiliations:

  • Centro de Simulación y Modelos (CESIMO), Facultad de Ingeniería, Universidad de los Andes, 5101 Mérida, Venezuela;Centro de Simulación y Modelos (CESIMO), Facultad de Ingeniería, Universidad de los Andes, 5101 Mérida, Venezuela;Centro de Simulación y Modelos (CESIMO), Facultad de Ingeniería, Universidad de los Andes, 5101 Mérida, Venezuela;BIODESUS, Facultad de Ciencias Ambientales y Forestales, Universidad de Los Andes, 5101 Mérida, Venezuela;Centro de Simulación y Modelos (CESIMO), Facultad de Ingeniería, Universidad de los Andes, 5101 Mérida, Venezuela;Centro de Simulación y Modelos (CESIMO), Facultad de Ingeniería, Universidad de los Andes, 5101 Mérida, Venezuela and BIODESUS, Facultad de Ciencias Ambientales y Forestales, Univer ...;Centro de Simulación y Modelos (CESIMO), Facultad de Ingeniería, Universidad de los Andes, 5101 Mérida, Venezuela and University of Lugano, 6900 Lugano, Switzerland;Department of Geography and Institute of Applies Sciences, University of North Texas, Denton, TX 76203, USA and Centro de Simulación y Modelos (CESIMO), Facultad de Ingeniería, Universid ...

  • Venue:
  • Environmental Modelling & Software
  • Year:
  • 2007

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Abstract

A multi-agent model of social and environmental complexity of deforestation was developed for the Caparo Forest Reserve, Venezuela. It includes three types of agents: settlers, government, and lumber concessionaires. Settlers represent people of limited economic resources that deforest and occupy reserve land to grow crops and eventually claim property rights of this land. Their agricultural practices generate unintended environmental problems. The concessionaires extract lumber using management plans approved and monitored by the government. The agent model links to a cellular automata simulation of the natural system. Representational tools include Galatea (multi-agents), Actilog (rule description), and SpaSim (cellular automata). Three scenarios were explored for government policies: hands-off, pro-forestry and agro-forestry. Results agree qualitatively well with history of land-use change in the area. Old-growth forest is replaced by logged and secondary forest but the rate at which this transformation occurs varies by scenario. These results suggest that some of the agent's behaviours and forest management plans should change to promote sustainability of the forest reserve; e.g., broadening government's role to improve management plans and monitoring, and to prevent invasion of reserve land by improving living conditions of potential settlers outside the reserve. These and other alternatives will be modelled in future work.