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Coastal connectivity and spatial subsidy from a microbial perspective.

Christin Säwström1, Glenn A Hyndes1, Bradley D Eyre2

  • 1School of Science Centre for Marine Ecosystems Research Edith Cowan University Joondalup WA Australia.

Ecology and Evolution
|October 26, 2016
PubMed
Summary

Microorganisms are key to understanding how organic material moves between coastal areas, a process called spatial subsidy. Their assimilation and respiration, not just production, control this vital material flow.

Keywords:
coastal connectivityconceptual modelmicrobial activityorganic matterremineralizationrespirationspatial subsidy

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Area of Science:

  • Marine Ecology
  • Microbial Ecology
  • Coastal Science

Background:

  • Spatial subsidies, the transfer of organic material between coastal habitats, enhance recipient ecosystem productivity.
  • Microorganisms are central to organic matter cycling but their role in connecting coastal habitats via spatial subsidies is understudied.

Purpose of the Study:

  • To develop a conceptual model of coastal connectivity emphasizing microbially mediated organic material flow.
  • To highlight the significance of microbial processes in the transfer of organic matter between coastal environments.

Main Methods:

  • Conceptual modeling of organic material flow in coastal ecosystems.
  • Focus on microbial assimilation and respiration as key drivers of export.

Main Results:

  • The amount of organic material exported between coastal habitats is determined by microbial assimilation and respiration, not solely by differing generation rates.
  • Microbial remineralization and respiration rates are sensitive to environmental changes, impacting cross-habitat organic material flow.

Conclusions:

  • Microorganisms are integral to coastal connectivity and spatial subsidies.
  • A microbial perspective is crucial for comprehensive studies of coastal connectivity and ecosystem functioning.