Articles | Volume 17, issue 22
https://doi.org/10.5194/bg-17-5763-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-17-5763-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
24 Nov 2020
Research article |
| 24 Nov 2020
| 24 Nov 2020
Reconstructing past variations in environmental conditions and paleoproductivity over the last ∼ 8000 years off north-central Chile (30° S)
Departamento de Biología Marina, Universidad Católica del
Norte, Larrondo 1281, Coquimbo, Chile
Centro de Estudios Avanzados en Zonas Áridas (CEAZA), La Serena, Coquimbo, Chile
Lorena Rebolledo
Departamento Científico, Instituto Antártico Chileno, Punta Arenas, Chile
Centro FONDAP de Investigación Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Universidad Austral de Chile, Campus Isla Teja, Valdivia, Chile
Laurent Dezileau
Normandy University, UNICAEN, UNIROUEN, CNRS, M2C, 14000 Caen,
France
Antonio Maldonado
Centro de Estudios Avanzados en Zonas Áridas (CEAZA), La Serena, Coquimbo, Chile
Instituto de Investigación Multidisciplinario en Ciencia y
Tecnología, Universidad de La Serena, La Serena, Chile
Christoph Mayr
Institut für Geographie, FAU Erlangen-Nürnberg, 91058
Erlangen, Germany
Department of Earth and Environmental Sciences and GeoBio-Center, LMU Munich, 80333 Munich, Germany
Paola Cárdenas
Centro FONDAP de Investigación Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Universidad Austral de Chile, Campus Isla Teja, Valdivia, Chile
Carina B. Lange
Centro FONDAP de Investigación Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Universidad Austral de Chile, Campus Isla Teja, Valdivia, Chile
Departamento de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160C, Concepción, Chile
Centro de Investigación Oceanográfica COPAS Sur-Austral,
Universidad de Concepción, Casilla 160C, Concepción, Chile
Katherine Lalangui
Planta de Alimentos Pargua, AquaChile, Puerto Montt, Chile
Gloria Sanchez
Departamento de Ciencias y Recursos Naturales, Universidad de Magallanes, Punta Arenas, Chile
Marco Salamanca
Departamento de Oceanografía, Facultad de Ciencias Naturales y Oceanográficas, Universidad de Concepción, Casilla 160C, Concepción, Chile
Karen Araya
Departamento de Biología Marina, Universidad Católica del
Norte, Larrondo 1281, Coquimbo, Chile
Laboratoire Géosciences Montpellier (GM), Université de
Montpellier, 34095 Montpellier CEDEX 05, France
Ignacio Jara
Centro de Estudios Avanzados en Zonas Áridas (CEAZA), La Serena, Coquimbo, Chile
Gabriel Easton
Departamento de Geología, Universidad de Chile, Santiago, Chile
Marcel Ramos
Departamento de Biología Marina, Universidad Católica del
Norte, Larrondo 1281, Coquimbo, Chile
Centro de Estudios Avanzados en Zonas Áridas (CEAZA), La Serena, Coquimbo, Chile
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Short summary
We analyze marine sedimentary records to study temporal changes in oxygen and productivity in marine waters of central Chile. We observed increasing oxygenation and decreasing productivity from 6000 kyr ago to the modern era that seem to respond to El Niño–Southern Oscillation activity. In the past centuries, deoxygenation and higher productivity are re-established, mainly in the northern zones of Chile and Peru. Meanwhile, in north-central Chile the deoxygenation trend is maintained.
We analyze marine sedimentary records to study temporal changes in oxygen and productivity in...
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