A spatio-temporal Bayesian network approach for revealing functional ecological networks in fisheries

Neda Trifonova, Daniel Duplisea, Andrew Kenny, Allan Tucker

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)

Abstract

Ecosystems consist of complex dynamic interactions among species and the environment, the understanding of which has implications for predicting the environmental response to changes in climate and biodiversity. Machine learning techniques can allow such complex, spatially varying interactions to be recovered from collected field data. In this study, we apply structure learning techniques to identify functional relationships between trophic groups of species that vary across space and time. Specifically, Bayesian networks are created on a window of data for each of the 20 geographically different and temporally varied sub-regions within an oceanic area. In addition, we explored the spatial and temporal variation of pre-defined functions (like predation, competition) that are generalisable by experts’ knowledge. We were able to discover meaningful ecological networks that were more precisely spatially-specific rather than temporally, as previously suggested for this region. To validate the discovered networks, we predict the biomass of the trophic groups by using dynamic Bayesian networks, and correcting for spatial autocorrelation by including a spatial node in our models
Original languageEnglish
Title of host publicationAdvances in Intelligent Data Analysis XIII
Subtitle of host publicationInternational Symposium on Intelligent Data Analysis (IDA 2014)
PublisherSpringer
Pages298-308
DOIs
Publication statusPublished - 2014

Publication series

NameLecture Notes in Computer Science
Volume8819

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