Modeling multi-scale spatial ecological processes under the discrete event systems paradigm |
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| Authors: | Maria J Perestrello de Vasconcelos Bernard P Zeigler Lee A Graham |
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| Institution: | (1) Centro Nacional de Informaçäo Geográfica, Rua Braancamp 82, 1D, 1200 Lisboa, Portugal;(2) Advanced Resource Technology Program, Biosciences East, room 203, The University of Arizona, 85721 Tucson, AZ, USA;(3) Department of Electrical and Computer Engineering, The University of Arizona, 85721 Tucson, AZ, USA;(4) School of Renewable Natural Resources, Room 203, Biosciences East, The University of Arizona, 83721 Tucson, ZA, USA |
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| Abstract: | A multi-scale spatial ecological model of a wet sclerophyllous forest subject to recurrent fires is presented. The model is specified in a Discrete Event Systems framework (DEVS) (Zeigler, 1990) interfaced with a Geographic Information System (GIS), and includes the ability to simulate landscape dynamics at several levels of resolution simultaneously. This is achieved by encoding a modular hierarchical representation of the forest landscape components into a set of nested, interconnected, and spatially referenced dynamic models. The results of the landscape dynamics simulations are displayed as sequences of maps through time, illustrating the potential of this modeling methodology for dealing with complex hierarchical structures that operate at several spatial and temporal resolutions.Research work supported by Junta Nacional de Investigaçäo Científica e Tecnológica, Portugal, and the Advanced Resource Technology Program, University of Arizona, USA. |
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