Biogeosciences
Biogeosciences
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Articles | Volume 20, issue 20
Articles | Volume 20, issue 20
https://doi.org/10.5194/bg-20-4339-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-20-4339-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 20, issue 20
Research article
 | 
24 Oct 2023
Research article |  | 24 Oct 2023

Mobilisation thresholds for coral rubble and consequences for windows of reef recovery

Tania M. Kenyon, Daniel Harris, Tom Baldock, David Callaghan, Christopher Doropoulos, Gregory Webb, Steven P. Newman, and Peter J. Mumby

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Short summary
The movement of rubble on coral reefs can lead to persistent unstable rubble beds that hinder reef recovery. To identify where such rubble beds are, we need to know the minimum velocity that will move rubble. We found that loose rubble had a 50 % chance of being moved when near-bed wave orbital velocities reached ~0.3 m s−1; rubble moved more if pieces were small and had no branches. Rubble beds that experience frequent movement would be good candidates for rubble stabilisation interventions.
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