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Modelling Coral Bleaching Events Using a Fuzzy Logic Technique

  • Conference paper
Fuzzy Logic

Part of the book series: Studies in Fuzziness and Soft Computing ((STUDFUZZ,volume 81))

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Abstract

A fuzzy logic algorithm was used to model coral bleaching events around Magnetic Island, North Queensland, Australia. Most events during the 80’s and 90’s did not coincide with the strong ENSO (El-Niño Southern Oscillation) phenomenon. The model uses monthly Air Temperature (AT) data obtained from the Townsville Bureau of Meteorology and monthly IGOSS-NMC and Geoffrey Bay Sea Surface Temperature (SST) data sets. Four separate model inputs were considered. They were: (a) raw temperature, (b) a temperature for a particular year is taken by subtracting the value of one year before from the value of that year, (c) a temperature for a particular year is taken by subtracting the 2-year running average from the value of that year, and (d) a temperature for a particular year is taken by subtracting the 3-year running average from the value of that year. Using the difference in seawater temperature with that of the previous year as a model input (case b) gave a better fit to bleaching events than using seawater temperature alone. This indicates that some form of acclimatisation may influence the response of corals to some form of bleaching event. It was also found that when the maximum sea temperature in a particular year exceeds 0.37 °C of the previous one year, coral bleaching occurs.

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Authors and Affiliations

  1. School of Mathematical and Physical Sciences, James Cook University, Townsville, QLD, 4811, Australia

    Halmar Halide & Peter Ridd

Authors
  1. Halmar Halide
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  2. Peter Ridd
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Editor information

Editors and Affiliations

  1. School of Social Ecology and Lifelong Learning College of Arts, Education and Social Sciences, University of Western Sydney, Hawkesburg Campus, Locked Bag 1797, 1797, South Penrith DC, NSW, Australia

    Vladimir Dimitrov

  2. School of Mathematical and Decision Sciences Faculty of Informatics and Communication, Central Queensland University, Mackay Campus, PO BOX 5606, 4741, Mackay Mail Centre, QLD, Australia

    Victor Korotkich

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© 2002 Springer-Verlag Berlin Heidelberg

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Halide, H., Ridd, P. (2002). Modelling Coral Bleaching Events Using a Fuzzy Logic Technique. In: Dimitrov, V., Korotkich, V. (eds) Fuzzy Logic. Studies in Fuzziness and Soft Computing, vol 81. Physica, Heidelberg. https://doi.org/10.1007/978-3-7908-1806-2_26

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  • DOI: https://doi.org/10.1007/978-3-7908-1806-2_26

  • Publisher Name: Physica, Heidelberg

  • Print ISBN: 978-3-7908-2496-4

  • Online ISBN: 978-3-7908-1806-2

  • eBook Packages: Springer Book Archive

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