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Please use this identifier to cite or link to this item: http://hdl.handle.net/10373/778

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Title: Biological invasion in soil: complex network analysis
Authors: Perez-Reche, Francisco J.
Taraskin, S. N.
Neri, F. M.
Gilligan, C. A.
da F. Costa, L.
Viana, M. P.
Otten, Wilfred
Grinev, D.
Affiliation: University of Abertay Dundee. Scottish Informatics, Mathematics, Biology and Statistics Centre
Keywords: Soil image analysis
Biological invasion
Complex network
Percolation
Issue Date: Jul-2009
Publisher: Institute of Electrical and Electronics Engineers
Type: Conference Paper
Refereed: peer-reviewed
Rights: Published version (c)Institute of Electrical and Electronics Engineers, available from DOI: 10.1109/ICDSP.2009.5201098
Citation: Perez-Reche, F., et al. 2009. Biological invasion in soil: complex network analysis. In: 2009 16th International Conference on Digital Signal Processing, Santorini-Hellas 5-7 July 2009. pp.1-8. Available from http://dx.doi.org/10.1109/ICDSP.2009.5201098
Abstract: A network model for soil pore space is developed and applied to the analysis of biological invasion of microorganisms in soil. The model was parameterized for two soil samples with different compaction (loosely and densely packed) from images derived from an X-ray micro-tomography system. The data were then processed using 3-D imaging techniques, to construct the networks of pore structures with in the soil samples. The network structure is characterized by the measurement of features that are relevant for biological colonization through soil. These include the distribution of channel lengths, node coordination numbers, location and size of channel bottlenecks, and the topology of the largest connected cluster. The pore-space networks are then used to investigate the spread of a microorganism through soil, in which the transmissibility between pores is defined as a function of the channel characteristics. The same spreading process is investigated in artificially constructed homogeneous networks with the same average properties as the original ones. The comparison shows that the extent of invasion is lower in the original networks than in the homogeneous ones: this proves that inherent heterogeneity and correlations contribute to the resilience of the system to biological invasion.
URI: http://hdl.handle.net/10373/778
ISBN: 9781424432974
Appears in Collections:SIMBIOS Collection
Science Engineering & Technology Collection

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