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Self-generated morphology in lagoon reefs.

David Blakeway1, Michael G Hamblin2

  • 1School of Earth and Environment, University of Western Australia , Crawley , Western Australia, Australia.

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|July 16, 2015
PubMed
Summary
This summary is machine-generated.

Coral reef shape is determined by the mechanical behavior of reef-building organisms, not just external factors. This discovery helps identify coral habitats and understand reef ecology.

Keywords:
AcroporaAutomatonCellularCoralGeomorphologyHoloceneHoutman AbrolhosReticulateSelf-organisedSpace-for-time

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Area of Science:

  • Marine Biology
  • Geology
  • Ecology

Background:

  • Coral reef morphology is shaped by organism-environment interactions.
  • Traditional views emphasize external controls like topography and hydrodynamics.
  • The role of inherent reef-building organism behavior in morphology is understudied.

Purpose of the Study:

  • To investigate the inherent factors determining reef morphology.
  • To understand how the mechanical behavior of reef builders influences reef structure.
  • To explore the potential of using reef morphology to infer coral types and habitats.

Main Methods:

  • Utilized reef growth simulations based on field observations.
  • Analyzed data from cellular reefs in Western Australia's Houtman Abrolhos Islands.
  • Modeled the mechanical behaviors of reef-building organisms (staying in place vs. collapsing).

Main Results:

  • Reef morphology is fundamentally driven by the mechanical properties of reef-building organisms.
  • Organisms that remain in place (e.g., massive corals) form nodular reefs.
  • Organisms prone to collapse (e.g., branching Acropora) form cellular reefs.

Conclusions:

  • Reef morphology can serve as a phenotype of the predominant reef-building organism.
  • This understanding can aid in identifying and mapping coral habitats using remote sensing.
  • Investigating self-generated reef morphology enhances insights into present-day reef ecology.