New insights into Holocene hydrology and temperature from lipid biomarkers in western Mediterranean alpine wetlands

Alpine regions of the Mediterranean realm are among the most climatically sensitive areas in the world. Thus, alpine wetlands from the southern Iberian Peninsula, in the westernmost part of the Mediterranean region, are highly sensitive sensors of environmental changes. Difficulties have surfaced in...

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Published in:Quaternary Science Reviews
Main Authors: Toney, Jaime L., García-Alix, Antonio, Jiménez-Moreno, Gonzalo, Anderson, R. Scott, Moossen, Heiko, Seki, Osamu
Other Authors: Junta de Andalucía, Ministerio de Economía y Competitividad (España), European Commission
Format: Article in Journal/Newspaper
Language:unknown
Published: Elsevier BV 2020
Subjects:
Online Access:http://hdl.handle.net/10261/225051
https://doi.org/10.1016/j.quascirev.2020.106395
https://doi.org/10.13039/501100000780
https://doi.org/10.13039/501100003329
https://doi.org/10.13039/501100011011
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spelling ftcsic:oai:digital.csic.es:10261/225051 2024-02-11T10:06:45+01:00 New insights into Holocene hydrology and temperature from lipid biomarkers in western Mediterranean alpine wetlands Toney, Jaime L. García-Alix, Antonio Jiménez-Moreno, Gonzalo Anderson, R. Scott Moossen, Heiko Seki, Osamu Junta de Andalucía Ministerio de Economía y Competitividad (España) European Commission 2020-06-15 http://hdl.handle.net/10261/225051 https://doi.org/10.1016/j.quascirev.2020.106395 https://doi.org/10.13039/501100000780 https://doi.org/10.13039/501100003329 https://doi.org/10.13039/501100011011 unknown Elsevier BV #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2013-47038-R info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/CGL-2017-85415-R info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RYC-2015-1896 http://dx.doi.org/10.1016/j.quascirev.2020.106395 Sí doi:10.1016/j.quascirev.2020.106395 issn: 0277-3791 Quaternary Science Reviews 240: 106395 (2020) http://hdl.handle.net/10261/225051 http://dx.doi.org/10.13039/501100000780 http://dx.doi.org/10.13039/501100003329 http://dx.doi.org/10.13039/501100011011 none artículo http://purl.org/coar/resource_type/c_6501 2020 ftcsic https://doi.org/10.1016/j.quascirev.2020.10639510.13039/50110000078010.13039/50110000332910.13039/501100011011 2024-01-16T11:00:32Z Alpine regions of the Mediterranean realm are among the most climatically sensitive areas in the world. Thus, alpine wetlands from the southern Iberian Peninsula, in the westernmost part of the Mediterranean region, are highly sensitive sensors of environmental changes. Difficulties have surfaced in separating controls by temperature and/or precipitation in previous paleoenvironmental studies from alpine environments in this area. We present a Holocene biomarker record (n-alkanes and long-chain diols) from a high elevation lake, Laguna de Río Seco (LdRS), in the south of the Iberian Peninsula, which contributes to the identification of these forcing mechanisms. The hydrological history of the area, primarily water availability and evapotranspiration, is reconstructed by means of the n-alkane record, including the indices of average chain length, portion aquatic, and carbon preference index, as well as hydrogen isotopes (δD) of aquatic (δD) and terrestrial (δD) n-alkanes. Temperatures are also estimated using the algae derived long-chain diols. We interpret δD and δD fluctuations as showing changes in the source and amount of precipitation throughout the LdRS record. An Atlantic precipitation source appears to have predominated during the early-middle Holocene, but an occasional Mediterranean influence with an isotopic enrichment in precipitation is detected in the middle-late Holocene that is likely related to the setting of the current atmospheric pattern in southeastern Iberia under the joint control of the North Atlantic Oscillation (NAO) and the Western Mediterranean dynamics, such as the Western Mediterranean Oscillation (WeMO). Our new record from LdRS is consistent with a generalized trend of a humid early-middle Holocene with low temperature variability, evolving towards an arid middle-late Holocene with abrupt temperature changes. In addition to these long-term trends during the last ∼10,500 years, two phases of climate instability, evidenced by abrupt depletions in δD, have been identified at the end ... Article in Journal/Newspaper North Atlantic North Atlantic oscillation Digital.CSIC (Spanish National Research Council) Quaternary Science Reviews 240 106395
institution Open Polar
collection Digital.CSIC (Spanish National Research Council)
op_collection_id ftcsic
language unknown
description Alpine regions of the Mediterranean realm are among the most climatically sensitive areas in the world. Thus, alpine wetlands from the southern Iberian Peninsula, in the westernmost part of the Mediterranean region, are highly sensitive sensors of environmental changes. Difficulties have surfaced in separating controls by temperature and/or precipitation in previous paleoenvironmental studies from alpine environments in this area. We present a Holocene biomarker record (n-alkanes and long-chain diols) from a high elevation lake, Laguna de Río Seco (LdRS), in the south of the Iberian Peninsula, which contributes to the identification of these forcing mechanisms. The hydrological history of the area, primarily water availability and evapotranspiration, is reconstructed by means of the n-alkane record, including the indices of average chain length, portion aquatic, and carbon preference index, as well as hydrogen isotopes (δD) of aquatic (δD) and terrestrial (δD) n-alkanes. Temperatures are also estimated using the algae derived long-chain diols. We interpret δD and δD fluctuations as showing changes in the source and amount of precipitation throughout the LdRS record. An Atlantic precipitation source appears to have predominated during the early-middle Holocene, but an occasional Mediterranean influence with an isotopic enrichment in precipitation is detected in the middle-late Holocene that is likely related to the setting of the current atmospheric pattern in southeastern Iberia under the joint control of the North Atlantic Oscillation (NAO) and the Western Mediterranean dynamics, such as the Western Mediterranean Oscillation (WeMO). Our new record from LdRS is consistent with a generalized trend of a humid early-middle Holocene with low temperature variability, evolving towards an arid middle-late Holocene with abrupt temperature changes. In addition to these long-term trends during the last ∼10,500 years, two phases of climate instability, evidenced by abrupt depletions in δD, have been identified at the end ...
author2 Junta de Andalucía
Ministerio de Economía y Competitividad (España)
European Commission
format Article in Journal/Newspaper
author Toney, Jaime L.
García-Alix, Antonio
Jiménez-Moreno, Gonzalo
Anderson, R. Scott
Moossen, Heiko
Seki, Osamu
spellingShingle Toney, Jaime L.
García-Alix, Antonio
Jiménez-Moreno, Gonzalo
Anderson, R. Scott
Moossen, Heiko
Seki, Osamu
New insights into Holocene hydrology and temperature from lipid biomarkers in western Mediterranean alpine wetlands
author_facet Toney, Jaime L.
García-Alix, Antonio
Jiménez-Moreno, Gonzalo
Anderson, R. Scott
Moossen, Heiko
Seki, Osamu
author_sort Toney, Jaime L.
title New insights into Holocene hydrology and temperature from lipid biomarkers in western Mediterranean alpine wetlands
title_short New insights into Holocene hydrology and temperature from lipid biomarkers in western Mediterranean alpine wetlands
title_full New insights into Holocene hydrology and temperature from lipid biomarkers in western Mediterranean alpine wetlands
title_fullStr New insights into Holocene hydrology and temperature from lipid biomarkers in western Mediterranean alpine wetlands
title_full_unstemmed New insights into Holocene hydrology and temperature from lipid biomarkers in western Mediterranean alpine wetlands
title_sort new insights into holocene hydrology and temperature from lipid biomarkers in western mediterranean alpine wetlands
publisher Elsevier BV
publishDate 2020
url http://hdl.handle.net/10261/225051
https://doi.org/10.1016/j.quascirev.2020.106395
https://doi.org/10.13039/501100000780
https://doi.org/10.13039/501100003329
https://doi.org/10.13039/501100011011
genre North Atlantic
North Atlantic oscillation
genre_facet North Atlantic
North Atlantic oscillation
op_relation #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CGL2013-47038-R
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/CGL-2017-85415-R
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RYC-2015-1896
http://dx.doi.org/10.1016/j.quascirev.2020.106395

doi:10.1016/j.quascirev.2020.106395
issn: 0277-3791
Quaternary Science Reviews 240: 106395 (2020)
http://hdl.handle.net/10261/225051
http://dx.doi.org/10.13039/501100000780
http://dx.doi.org/10.13039/501100003329
http://dx.doi.org/10.13039/501100011011
op_rights none
op_doi https://doi.org/10.1016/j.quascirev.2020.10639510.13039/50110000078010.13039/50110000332910.13039/501100011011
container_title Quaternary Science Reviews
container_volume 240
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