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Original research — experimental, observational, or case-control study. Direct primary evidence.
Environmental Sources
Marine & Wildlife
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Benthic biology influences sedimentation in submarine channel bends: Coupling of biology, sedimentation and flow
The Depositional Record2024
4 citations
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Score: 45
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J. R. Johnson,
Michael Clare,
J. R. Johnson,
J. R. Johnson,
Maria Azpiroz–Zabala,
Matthieu Cartigny,
Maria Azpiroz–Zabala,
Jeff Peakall,
E. J. Sumner,
Michael Clare,
Michael Clare,
R. M. Dorrell,
R. M. Dorrell,
Michael Clare,
Michael Clare,
R. M. Dorrell,
Michael Clare,
Michael Clare,
Daniel R. Parsons,
Michael Clare,
Michael Clare,
Jeff Peakall,
Daniel R. Parsons,
R. M. Dorrell,
Michael Clare,
Daniel R. Parsons,
Michael Clare,
Daniel R. Parsons,
Daniel R. Parsons,
Michael Clare,
Michael Clare,
Michael Clare,
Daniel R. Parsons,
R. M. Dorrell,
Daniel R. Parsons,
Michael Clare,
E. J. Sumner,
Matthieu Cartigny,
Matthieu Cartigny,
Matthieu Cartigny,
Matthieu Cartigny,
Matthieu Cartigny,
Michael Clare,
Michael Clare,
Jeff Peakall,
Daniel R. Parsons,
Michael Clare,
Daniel R. Parsons,
Michael Clare,
Michael Clare,
Daniel R. Parsons,
Michael Clare,
Michael Clare,
Daniel R. Parsons,
Daniel R. Parsons,
Daniel R. Parsons,
Daniel R. Parsons,
R. M. Dorrell,
Daniel R. Parsons,
Daniel R. Parsons,
Daniel R. Parsons,
R. M. Dorrell,
R. M. Dorrell,
R. M. Dorrell,
Daniel R. Parsons,
R. M. Dorrell,
Daniel R. Parsons,
R. M. Dorrell,
R. M. Dorrell,
Daniel R. Parsons,
E. J. Sumner,
E. J. Sumner,
Stephen E. Darby,
Jeff Peakall,
Jeff Peakall,
Daniel R. Parsons,
Daniel R. Parsons,
Daniel R. Parsons,
Daniel R. Parsons,
R. M. Dorrell,
E. J. Sumner,
Emi̇n Özsoy,
Daniel R. Parsons,
Devrim Tezcan
R. B. Wynn,
R. B. Wynn,
Daniel R. Parsons,
Michael Clare,
Michael Clare,
E. J. Sumner,
J. R. Johnson,
Maria Azpiroz–Zabala,
J. R. Johnson,
Matthieu Cartigny,
Michael Clare,
Michael Clare,
Daniel R. Parsons,
Daniel R. Parsons,
Devrim Tezcan
Summary
This study examined how benthic biology influences sedimentation patterns in submarine channel bends, coupling biological, sedimentological, and morphodynamic processes that are typically treated separately. The research found that benthic organisms significantly modify sediment transport and channel morphology in ways that cannot be explained by physical processes alone.
Study Type
Environmental
Abstract Submarine channels are key features for the transport of flow and nutrients into deep water. Previous studies of their morphology and channel evolution have treated these systems as abiotic, and therefore assume that physical processes are solely responsible for morphological development. Here, a unique dataset is utilised that includes spatial measurements around a channel bend that hosts active sediment gravity flows. The data include flow velocity and density, alongside bed grain size and channel‐floor benthic macrofauna. Analysis of these parameters demonstrate that while physical processes control the broadest scale variations in sedimentation around and across the channel, benthic biology plays a critical role in stabilising sediment and trapping fines. This leads to much broader mixed grain sizes than would be expected from purely abiotic sedimentation, and the maintenance of sediment beds in positions where all the sediment should be actively migrating. Given that previous work has also shown that submarine channels can be biological hotspots, then the present study suggests that benthic biology probably plays a key role in channel morphology and evolution, and that these need to be considered both in the modern and when considering examples preserved in the rock record.