Variability of marine biological productivity in the northeastern pacific over the past millennium

Miryam Juárez; Alberto Sánchez; Oscar González-Yajimovich

doi:10.7773/cm.v40i4.2477

Variability of marine biological productivity in the northeastern pacific over the past millennium

Translated title of the contribution: Variability of marine biological productivity in the northeastern pacific over the past millennium

Miryam Juárez, Alberto Sánchez, Oscar González-Yajimovich

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

In this study we present new data of biogenic opal (BO), organic carbon (OC), and calcium carbonate (CaCO₃) in a highresolution record from the western coast of Baja California Sur, Mexico. The variability of marine biological productivity in this area is dominated by El Niño and La Niña events on different time scales. The BO and OC contents showed a decrease between AD 1100 and 1400. From AD 1400 to the present, BO and OC showed a significant increase, indicating permanent upwelling conditions. The CaCO3 content showed an inverse correlation with OC, which suggests that the exported OC fluxes are a significant factor controlling CaCO₃ dissolution in the sediment. The increase in BO and OC was synchronic with a decline in the number of El Niño events (6 ± 4 every 100 years) over the last 600 years of the millennium.

Translated title of the contribution	Variability of marine biological productivity in the northeastern pacific over the past millennium
Original language	English
Pages (from-to)	211-220
Number of pages	10
Journal	Ciencias Marinas
Volume	40
Issue number	4
DOIs	https://doi.org/10.7773/cm.v40i4.2477
State	Published - 2014
Externally published	Yes

Keywords

Biogenic opal
El Niño
La Niña
Organic carbon
Upwelling

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.7773/cm.v40i4.2477

Cite this

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title = "Variability of marine biological productivity in the northeastern pacific over the past millennium",

abstract = "In this study we present new data of biogenic opal (BO), organic carbon (OC), and calcium carbonate (CaCO3) in a highresolution record from the western coast of Baja California Sur, Mexico. The variability of marine biological productivity in this area is dominated by El Ni{\~n}o and La Ni{\~n}a events on different time scales. The BO and OC contents showed a decrease between AD 1100 and 1400. From AD 1400 to the present, BO and OC showed a significant increase, indicating permanent upwelling conditions. The CaCO3 content showed an inverse correlation with OC, which suggests that the exported OC fluxes are a significant factor controlling CaCO3 dissolution in the sediment. The increase in BO and OC was synchronic with a decline in the number of El Ni{\~n}o events (6 ± 4 every 100 years) over the last 600 years of the millennium.",

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year = "2014",

doi = "10.7773/cm.v40i4.2477",

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journal = "Ciencias Marinas",

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T1 - Variability of marine biological productivity in the northeastern pacific over the past millennium

AU - Juárez, Miryam

AU - Sánchez, Alberto

AU - González-Yajimovich, Oscar

PY - 2014

Y1 - 2014

N2 - In this study we present new data of biogenic opal (BO), organic carbon (OC), and calcium carbonate (CaCO3) in a highresolution record from the western coast of Baja California Sur, Mexico. The variability of marine biological productivity in this area is dominated by El Niño and La Niña events on different time scales. The BO and OC contents showed a decrease between AD 1100 and 1400. From AD 1400 to the present, BO and OC showed a significant increase, indicating permanent upwelling conditions. The CaCO3 content showed an inverse correlation with OC, which suggests that the exported OC fluxes are a significant factor controlling CaCO3 dissolution in the sediment. The increase in BO and OC was synchronic with a decline in the number of El Niño events (6 ± 4 every 100 years) over the last 600 years of the millennium.

AB - In this study we present new data of biogenic opal (BO), organic carbon (OC), and calcium carbonate (CaCO3) in a highresolution record from the western coast of Baja California Sur, Mexico. The variability of marine biological productivity in this area is dominated by El Niño and La Niña events on different time scales. The BO and OC contents showed a decrease between AD 1100 and 1400. From AD 1400 to the present, BO and OC showed a significant increase, indicating permanent upwelling conditions. The CaCO3 content showed an inverse correlation with OC, which suggests that the exported OC fluxes are a significant factor controlling CaCO3 dissolution in the sediment. The increase in BO and OC was synchronic with a decline in the number of El Niño events (6 ± 4 every 100 years) over the last 600 years of the millennium.

KW - Biogenic opal

KW - El Niño

KW - La Niña

KW - Organic carbon

KW - Upwelling

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DO - 10.7773/cm.v40i4.2477

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EP - 220

JO - Ciencias Marinas

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Variability of marine biological productivity in the northeastern pacific over the past millennium

Abstract

Keywords

UN SDGs

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