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Bringing It All Together: Multi-species Integrated Population Modelling of a Breeding Community.

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  • 11School of BioSciences, The University of Melbourne, Parkville, VIC 3010 Australia.

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This study introduces a novel multi-species Integrated Population Model (IPM) to analyze demographic synchrony in wildlife populations. The model simultaneously estimates population parameters and interspecies synchrony, crucial for understanding environmental change impacts.

Keywords:
Bayesian inferenceLong-term monitoringMark-resight-recoveryState-space modelSurvivalSynchrony

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Area of Science:

  • Ecology
  • Population Biology
  • Conservation Science

Background:

  • Integrated Population Models (IPMs) are valuable for wildlife demography but typically focus on single species.
  • Sympatric species share environments, potentially leading to synchronized demographic fluctuations.
  • Rapid environmental changes necessitate understanding interspecific responses and ecological interactions.

Purpose of the Study:

  • To develop and apply a multi-species Integrated Population Model (IPM) to quantify demographic synchrony.
  • To simultaneously estimate demographic parameters, abundance, and synchrony in survival and productivity for multiple species.
  • To assess species' differential sensitivity to environmental changes and identify at-risk ecological interactions.

Main Methods:

  • Combined demographic data with time-series population abundance data.
  • Utilized a framework for quantifying multi-species demographic synchrony.
  • Constructed the first multi-species IPM incorporating synchrony analysis.
  • Applied the model to three seabird species at a long-term monitoring site.

Main Results:

  • Successfully developed a robust statistical framework for multi-species IPMs.
  • Enabled simultaneous estimation of demographic parameters, adult abundance, and multi-species synchrony in survival and productivity.
  • Demonstrated the model's capability to analyze demographic synchrony across species.

Conclusions:

  • The developed multi-species IPM is a significant advancement for population ecology.
  • This approach allows for a more comprehensive understanding of community-level responses to environmental change.
  • The methodology is adaptable to various taxa and habitats, offering broad applicability in ecological research and conservation.