Articles | Volume 18, issue 8
Biogeosciences, 18, 2539–2557, 2021
https://doi.org/10.5194/bg-18-2539-2021
Biogeosciences, 18, 2539–2557, 2021
https://doi.org/10.5194/bg-18-2539-2021

Research article 22 Apr 2021

Research article | 22 Apr 2021

Impact of bottom trawling on sediment biogeochemistry: a modelling approach

Emil De Borger et al.

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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
ED: Reconsider after major revisions (11 Dec 2020) by Aninda Mazumdar
AR by Emil De Borger on behalf of the Authors (16 Dec 2020)  Author's response    Author's tracked changes    Manuscript
ED: Referee Nomination & Report Request started (12 Jan 2021) by Aninda Mazumdar
RR by Sarah Paradis (20 Jan 2021)
ED: Publish subject to minor revisions (review by editor) (23 Jan 2021) by Aninda Mazumdar
AR by Sarah Buchmann on behalf of the Authors (23 Feb 2021)  Author's response
ED: Publish as is (02 Mar 2021) by Aninda Mazumdar
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Short summary
Bottom trawling alters benthic mineralization: the recycling of organic material (OM) to free nutrients. To better understand how this occurs, trawling events were added to a model of seafloor OM recycling. Results show that bottom trawling reduces OM and free nutrients in sediments through direct removal thereof and of fauna which transport OM to deeper sediment layers protected from fishing. Our results support temporospatial trawl restrictions to allow key sediment functions to recover.
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