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A Spatio-temporal Bayesian Network Approach for Revealing Functional Ecological Networks in Fisheries

  • Neda Trifonova
  • Daniel Duplisea
  • Andrew Kenny
  • Allan Tucker
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8819)

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.

Keywords

Bayesian Network Functional Relationship Directed Acyclic Graph Spatial Cluster Trophic Group 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Neda Trifonova
    • 1
  • Daniel Duplisea
    • 2
  • Andrew Kenny
    • 3
  • Allan Tucker
    • 1
  1. 1.Department of Computer ScienceBrunel UniversityLondonUK
  2. 2.Fisheries and OceansCanada
  3. 3.Centre for EnvironmentFisheries and Aquaculture ScienceLowestoftUK

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