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Modeling the microbial loop: An estuarine modeler's perspective.

R L Wetzel1

  • 1Virginia Institute of Marine Science, School of Marine Science, College of William & Mary, 23061, Gloucester Point, Virginia, USA.

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Current microbial loop models need evaluation for their structure and ocean physics representation. New models should incorporate autotrophic components, mixotrophy, and stochastic processes for better accuracy.

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Area of Science:

  • Marine microbial ecology
  • Oceanographic modeling

Background:

  • Existing models of the microbial loop require critical assessment.
  • Current models often lack detailed representation of upper ocean physics and biological interactions.

Purpose of the Study:

  • To evaluate contemporary microbial loop models.
  • To propose improvements for future model development.

Main Methods:

  • Critical analysis of existing model structures and flow networks.
  • Review of upper ocean physics integration in models.
  • Assessment of mathematical frameworks and biological process representation.

Main Results:

  • Contemporary models need refinement in compartmentalization and flow dynamics.
  • Inadequate representation of autotrophic components and mixotrophy is identified.
  • Lack of integration of multiple resource limitation and stochastic processes is a key limitation.

Conclusions:

  • Future microbial loop models require enhanced biological realism, including autotrophy and mixotrophy.
  • Models must incorporate contemporary knowledge of resource limitation and testable assumptions.
  • Inclusion of stochastic processes is essential for capturing spatial and temporal variability.