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January 1, 2005ICES Journal of Marine Science354 citationsOpen Access

Application of a sequential regime shift detection method to the Bering Sea ecosystem

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SRSergei N. RodionovJOJames E. Overland

Key Points

  • The aim is to improve detection of regime shifts in ecosystems, particularly at the ends of time series data.
  • Applied the sequential t-test analysis of regime shifts (STARS) in real-time data monitoring.
  • Compared biotic and abiotic indices across different time periods including 1977, 1989, and 1998.
  • Evaluated the method’s efficiency in signaling regime shifts promptly.
  • Detected significant regime shifts in biotic and abiotic indices corresponding to the years 1989 and 1998.
  • Shifts were identified earlier than traditional methods would allow, suggesting improved response time for ecological management.
  • Highlighted differences between shifts in the eastern Bering Sea ecosystem over time.

Abstract

Abstract A common problem of existing methods for regime shift detection is their poor performance at the ends of time-series. Consequently, shifts in environmental and biological indices are usually detected long after their actual appearance. A recently introduced method based on sequential t-test analysis of regime shifts (STARS) treats all incoming data in real time, signals the possibility of a regime shift as soon as possible, then monitors how perception of the magnitude of the shift changes over time. Results of a STARS application to the eastern Bering Sea ecosystem show how the 1989 and 1998 regime shifts manifest themselves in biotic and abiotic indices in comparison with the 1977 shift.

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Cite This Study

Rodionov et al. (2005) studied this question.

synapsesocial.com/papers/6a00a70e581c6e761e77cf38https://doi.org/10.1016/j.icesjms.2005.01.013
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