Computational Science Technical Note CSTN-231

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Species Survivability and Altitude Dependence in a Lotka-Volterra Predator-Prey Spatial-Agent Based System

D. Q. Quach and J. M. Willemse and V. Du Preez and K. A. Hawick

Archived: 2013

Abstract

Predator-Prey food chains in real biological systems can be modelled using a differential system such as the Lotka-Volterra equations and many-agent effects added through a spatial mesh of interacting cells. Real systems in nature however do not exist in perfect gridded environments with uniform feeding and other environmental factors and we investigate effects of environment by perturbing the spatial Lotka-Volterra system in a realistic fractal landscape based on a digital elevation map. We investigate how this supports coupling of individual species survivability parameters to spatially varying altitude and report on this effect on species mean, carrying-capacity and predator-prey boom-bust periodicity. We present simulation results and discuss this approach as a basis for other even more realistic multi-species ecological models based on landscape or terrain map data.

Keywords: Lotka-Volterra model; multi-agent system; altitude; digital elevation map

Full Document Text: PDF version.

Citation Information: BiBTeX database for CSTN Notes.

BiBTeX reference:

@INPROCEEDINGS{CSTN-231,
        author = {D. Q. Quach and J. M. Willemse and V. Du Preez and K. A. Hawick},
        title = {Species Survivability and Altitude Dependence in a Lotka-Volterra
                Predator-Prey Spatial-Agent Based System},
        booktitle = {Proc. 14th Int. Conf. on Bioinformatics and Computational Biology},
        year = {2013},
        number = {CSTN-231},
        pages = {BIC7290},
        address = {Las Vegas, USA},
        month = {22-25 July},
        organization = {WorldComp},
        institution = {Computer Science, Massey University, Auckland, New Zealand},
        keywords = {Lotka-Volterra model; multi-agent system; altitude; digital elevation
                map},
        owner = {kahawick},
        timestamp = {2013.06.03},
        url = {http://www.massey.ac.nz/~kahawick/cstn/231/cstn-231.html}
}


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