Articles | Volume 14, issue 5
https://doi.org/10.5194/os-14-1185-2018
https://doi.org/10.5194/os-14-1185-2018
Research article
 | 
09 Oct 2018
Research article |  | 09 Oct 2018

Turbulence and hypoxia contribute to dense biological scattering layers in a Patagonian fjord system

Iván Pérez-Santos, Leonardo Castro, Lauren Ross, Edwin Niklitschek, Nicolás Mayorga, Luis Cubillos, Mariano Gutierrez, Eduardo Escalona, Manuel Castillo, Nicolás Alegría, and Giovanni Daneri

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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
AR by Iván Pérez-Santos on behalf of the Authors (15 Mar 2018)  Author's response 
ED: Referee Nomination & Report Request started (08 Apr 2018) by Markus Meier
RR by Anonymous Referee #2 (23 Apr 2018)
RR by Anonymous Referee #3 (28 Apr 2018)
RR by Anonymous Referee #1 (28 Apr 2018)
ED: Reconsider after major revisions (04 May 2018) by Markus Meier
AR by Iván Pérez-Santos on behalf of the Authors (15 Jun 2018)  Manuscript 
ED: Referee Nomination & Report Request started (22 Jun 2018) by Markus Meier
RR by Anonymous Referee #5 (13 Sep 2018)
ED: Publish subject to minor revisions (review by editor) (13 Sep 2018) by Markus Meier
AR by Iván Pérez-Santos on behalf of the Authors (14 Sep 2018)  Author's response   Manuscript 
ED: Publish as is (19 Sep 2018) by Markus Meier
AR by Iván Pérez-Santos on behalf of the Authors (19 Sep 2018)
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Short summary
Fjord systems play an important role in primary production and carbon export. Acoustic, hydrographic and in situ abundance measurements were used to study macrozooplankton assemblages at 44.7° S. Diel vertical migration of zooplankton stopped at the hypoxic boundary layer and apparently did not tolerate the hypoxic conditions. Turbulence appears to be the oceanographic process that contributes to vertical mixing around the sill, helping the interchange of nutrients, feeding and carbon export.