Articles | Volume 14, issue 5
https://doi.org/10.5194/os-14-1185-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-14-1185-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
09 Oct 2018
Research article |
| 09 Oct 2018
| 09 Oct 2018
Turbulence and hypoxia contribute to dense biological scattering layers in a Patagonian fjord system
Centro i-mar, Universidad de Los Lagos, Camino a
Chinquihue km 6, Puerto Montt, Chile
Centro COPAS Sur-Austral, Universidad de Concepción, Campus
Concepción, Víctor Lamas 1290, Casilla 160-C, código postal:
4070043, Concepción, Chile
Leonardo Castro
Centro COPAS Sur-Austral, Universidad de Concepción, Campus
Concepción, Víctor Lamas 1290, Casilla 160-C, código postal:
4070043, Concepción, Chile
Departamento de Oceanografía, Universidad de Concepción,
Campus Concepción, Víctor Lamas 1290, Casilla 160-C, código
postal: 4070043, Concepción, Chile
Centro de Investigaciones de Altas Latitudes (IDEAL), Universidad
Austral de Chile, Valdivia, Chile
Lauren Ross
Department of Civil and Environmental Engineering, University of
Maine, 5711 Boardman Hall, Orono, ME 04469-5711, USA
Edwin Niklitschek
Centro i-mar, Universidad de Los Lagos, Camino a
Chinquihue km 6, Puerto Montt, Chile
Nicolás Mayorga
Centro i-mar, Universidad de Los Lagos, Camino a
Chinquihue km 6, Puerto Montt, Chile
Luis Cubillos
Centro COPAS Sur-Austral, Universidad de Concepción, Campus
Concepción, Víctor Lamas 1290, Casilla 160-C, código postal:
4070043, Concepción, Chile
Departamento de Oceanografía, Universidad de Concepción,
Campus Concepción, Víctor Lamas 1290, Casilla 160-C, código
postal: 4070043, Concepción, Chile
Mariano Gutierrez
Universidad Nacional Federico Villareal, Facultad de
Oceanografía, Pesquerías y Ciencias Alimentarias, Calle Francia
726, Miraflores, Lima, Peru
Eduardo Escalona
Centro COPAS Sur-Austral, Universidad de Concepción, Campus
Concepción, Víctor Lamas 1290, Casilla 160-C, código postal:
4070043, Concepción, Chile
Departamento de Oceanografía, Universidad de Concepción,
Campus Concepción, Víctor Lamas 1290, Casilla 160-C, código
postal: 4070043, Concepción, Chile
Manuel Castillo
Centro COPAS Sur-Austral, Universidad de Concepción, Campus
Concepción, Víctor Lamas 1290, Casilla 160-C, código postal:
4070043, Concepción, Chile
Centro de Observación Marino para Estudios de Riesgo en Ambientes
Costeros, Facultad de Ciencias del Mar y de Recursos Naturales, Universidad
de Valparaíso, Valparaiso, Chile
Nicolás Alegría
Instituto de Investigaciones Pesqueras, Talcahuano, Chile
Giovanni Daneri
Centro COPAS Sur-Austral, Universidad de Concepción, Campus
Concepción, Víctor Lamas 1290, Casilla 160-C, código postal:
4070043, Concepción, Chile
Centro de Investigaciones en Ecosistemas de la Patagonia (CIEP),
Coyhaique, Chile
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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.
Fjord systems play an important role in primary production and carbon export. Acoustic,...
