Holocene atmospheric dust deposition in NW Spain
Atmospheric dust plays an important role in terrestrial and marine ecosystems, particularly those that are nutrient limited. Despite that most dust originates from arid and semi-arid regions, recent research has shown that past dust events may have been involved in boosting productivity in nutrient-...
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ftdatacite:10.25384/sage.c.4671635 2023-05-15T17:35:24+02:00 Holocene atmospheric dust deposition in NW Spain Cortizas, Antonio Martínez López-Costas, Olalla Orme, Lisa Mighall, Tim Kylander, Malin E Bindler, Richard Sala, Ángela Gallego 2019 https://dx.doi.org/10.25384/sage.c.4671635 https://sage.figshare.com/collections/Holocene_atmospheric_dust_deposition_in_NW_Spain/4671635 unknown SAGE Journals https://dx.doi.org/10.1177/0959683619875193 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Geography History Collection article 2019 ftdatacite https://doi.org/10.25384/sage.c.4671635 https://doi.org/10.1177/0959683619875193 2021-11-05T12:55:41Z Atmospheric dust plays an important role in terrestrial and marine ecosystems, particularly those that are nutrient limited. Despite that most dust originates from arid and semi-arid regions, recent research has shown that past dust events may have been involved in boosting productivity in nutrient-poor peatlands. We investigated dust deposition in a mid-latitude, raised bog, which is surrounded by a complex geology (paragneiss/schist, granite, quartzite and granodiorite). As proxies for dust fluxes, we used accumulation rates of trace (Ti, Zr, Rb, Sr and Y) as well as major (K and Ca) lithogenic elements. The oldest, largest dust deposition event occurred between ~8.6 and ~7.4 ka BP, peaking at ~8.1 ka BP (most probably the 8.2 ka BP event). The event had a large impact on the evolution of the mire, which subsequently transitioned from a fen into a raised bog in ~1500 years. From ~6.7 to ~4.0 ka BP, fluxes were very low, coeval with mid-Holocene forest stability and maximum extent. In the late Holocene, after ~4.0 ka BP, dust events became more prevalent with relatively major deposition at ~3.2–2.5, ~1.4 ka BP and ~0.35–0.05 ka BP, and minor peaks at ~4.0–3.7, ~1.7, ~1.10–0.95 ka BP and ~0.74–0.58 ka BP. Strontium fluxes display a similar pattern between ~11 and ~6.7 ka BP but then became decoupled from the other elements from the mid Holocene onwards. This seems to be a specific signal of the granodiorite batholith, which has an Sr anomaly. The reconstructed variations in dust fluxes bear a strong climatic imprint, probably related to storminess controlled by North Atlantic Oscillation conditions. Complex interactions also arise because of increased pressure from human activities. Article in Journal/Newspaper North Atlantic North Atlantic oscillation DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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unknown |
topic |
Geography History |
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Geography History Cortizas, Antonio Martínez López-Costas, Olalla Orme, Lisa Mighall, Tim Kylander, Malin E Bindler, Richard Sala, Ángela Gallego Holocene atmospheric dust deposition in NW Spain |
topic_facet |
Geography History |
description |
Atmospheric dust plays an important role in terrestrial and marine ecosystems, particularly those that are nutrient limited. Despite that most dust originates from arid and semi-arid regions, recent research has shown that past dust events may have been involved in boosting productivity in nutrient-poor peatlands. We investigated dust deposition in a mid-latitude, raised bog, which is surrounded by a complex geology (paragneiss/schist, granite, quartzite and granodiorite). As proxies for dust fluxes, we used accumulation rates of trace (Ti, Zr, Rb, Sr and Y) as well as major (K and Ca) lithogenic elements. The oldest, largest dust deposition event occurred between ~8.6 and ~7.4 ka BP, peaking at ~8.1 ka BP (most probably the 8.2 ka BP event). The event had a large impact on the evolution of the mire, which subsequently transitioned from a fen into a raised bog in ~1500 years. From ~6.7 to ~4.0 ka BP, fluxes were very low, coeval with mid-Holocene forest stability and maximum extent. In the late Holocene, after ~4.0 ka BP, dust events became more prevalent with relatively major deposition at ~3.2–2.5, ~1.4 ka BP and ~0.35–0.05 ka BP, and minor peaks at ~4.0–3.7, ~1.7, ~1.10–0.95 ka BP and ~0.74–0.58 ka BP. Strontium fluxes display a similar pattern between ~11 and ~6.7 ka BP but then became decoupled from the other elements from the mid Holocene onwards. This seems to be a specific signal of the granodiorite batholith, which has an Sr anomaly. The reconstructed variations in dust fluxes bear a strong climatic imprint, probably related to storminess controlled by North Atlantic Oscillation conditions. Complex interactions also arise because of increased pressure from human activities. |
format |
Article in Journal/Newspaper |
author |
Cortizas, Antonio Martínez López-Costas, Olalla Orme, Lisa Mighall, Tim Kylander, Malin E Bindler, Richard Sala, Ángela Gallego |
author_facet |
Cortizas, Antonio Martínez López-Costas, Olalla Orme, Lisa Mighall, Tim Kylander, Malin E Bindler, Richard Sala, Ángela Gallego |
author_sort |
Cortizas, Antonio Martínez |
title |
Holocene atmospheric dust deposition in NW Spain |
title_short |
Holocene atmospheric dust deposition in NW Spain |
title_full |
Holocene atmospheric dust deposition in NW Spain |
title_fullStr |
Holocene atmospheric dust deposition in NW Spain |
title_full_unstemmed |
Holocene atmospheric dust deposition in NW Spain |
title_sort |
holocene atmospheric dust deposition in nw spain |
publisher |
SAGE Journals |
publishDate |
2019 |
url |
https://dx.doi.org/10.25384/sage.c.4671635 https://sage.figshare.com/collections/Holocene_atmospheric_dust_deposition_in_NW_Spain/4671635 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_relation |
https://dx.doi.org/10.1177/0959683619875193 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.25384/sage.c.4671635 https://doi.org/10.1177/0959683619875193 |
_version_ |
1766134548953825280 |