Climate change enhances the mobilisation of naturally occurring metals in high altitude environments.

Persistent Link:
http://hdl.handle.net/10150/615547
Title:
Climate change enhances the mobilisation of naturally occurring metals in high altitude environments.
Author:
Zaharescu, Dragos G; Hooda, Peter S; Burghelea, Carmen I; Polyakov, Viktor; Palanca-Soler, Antonio
Affiliation:
Univ Arizona, Biosphere 2; USDA, Southwest Res Ctr
Issue Date:
2016-08-01
Publisher:
ELSEVIER SCIENCE BV
Citation:
Climate change enhances the mobilisation of naturally occurring metals in high altitude environments. 2016, 560-561:73-81 Sci. Total Environ.
Journal:
SCIENCE OF THE TOTAL ENVIRONMENT
Rights:
© 2016 Elsevier B.V. All rights reserved.
Collection Information:
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
Abstract:
Manmade climate change has expressed a plethora of complex effects on Earth's biogeochemical compartments. Climate change may also affect the mobilisation of natural metal sources, with potential ecological consequences beyond mountains' geographical limits; however, this question has remained largely unexplored. We investigated this by analysing a number of key climatic factors in relationship with trace metal accumulation in the sediment core of a Pyrenean lake. The sediment metal contents showed increasing accumulation trend over time, and their levels varied in step with recent climate change. The findings further revealed that a rise in the elevation of freezing level, a general increase in the frequency of drier periods, changes in the frequency of winter freezing days and a reducing snow cover since the early 1980s, together are responsible for the observed variability and augmented accumulation of trace metals. Our results provide clear evidence of increased mobilisation of natural metal sources - an overlooked effect of climate change on the environment. With further alterations in climate equilibrium predicted over the ensuing decades, it is likely that mountain catchments in metamorphic areas may become significant sources of trace metals, with potentially harmful consequences for the wider environment.
Note:
Available online 17 April 2016. 24 month embargo.
ISSN:
1879-1026
PubMed ID:
27093125
DOI:
10.1016/j.scitotenv.2016.04.002
Keywords:
Climate change; High altitude; Trace elements; Lakebed sediment record; Weathering and transportation; Contaminant risk
Version:
Final accepted manuscript
Additional Links:
http://www.sciencedirect.com/science/article/pii/S0048969716306817

Full metadata record

DC FieldValue Language
dc.contributor.authorZaharescu, Dragos Gen
dc.contributor.authorHooda, Peter Sen
dc.contributor.authorBurghelea, Carmen Ien
dc.contributor.authorPolyakov, Viktoren
dc.contributor.authorPalanca-Soler, Antonioen
dc.date.accessioned2016-07-05T22:34:16Z-
dc.date.available2016-07-05T22:34:16Z-
dc.date.issued2016-08-01-
dc.identifier.citationClimate change enhances the mobilisation of naturally occurring metals in high altitude environments. 2016, 560-561:73-81 Sci. Total Environ.en
dc.identifier.issn1879-1026-
dc.identifier.pmid27093125-
dc.identifier.doi10.1016/j.scitotenv.2016.04.002-
dc.identifier.urihttp://hdl.handle.net/10150/615547-
dc.description.abstractManmade climate change has expressed a plethora of complex effects on Earth's biogeochemical compartments. Climate change may also affect the mobilisation of natural metal sources, with potential ecological consequences beyond mountains' geographical limits; however, this question has remained largely unexplored. We investigated this by analysing a number of key climatic factors in relationship with trace metal accumulation in the sediment core of a Pyrenean lake. The sediment metal contents showed increasing accumulation trend over time, and their levels varied in step with recent climate change. The findings further revealed that a rise in the elevation of freezing level, a general increase in the frequency of drier periods, changes in the frequency of winter freezing days and a reducing snow cover since the early 1980s, together are responsible for the observed variability and augmented accumulation of trace metals. Our results provide clear evidence of increased mobilisation of natural metal sources - an overlooked effect of climate change on the environment. With further alterations in climate equilibrium predicted over the ensuing decades, it is likely that mountain catchments in metamorphic areas may become significant sources of trace metals, with potentially harmful consequences for the wider environment.en
dc.language.isoenen
dc.publisherELSEVIER SCIENCE BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S0048969716306817en
dc.rights© 2016 Elsevier B.V. All rights reserved.en
dc.subjectClimate changeen
dc.subjectHigh altitudeen
dc.subjectTrace elementsen
dc.subjectLakebed sediment recorden
dc.subjectWeathering and transportationen
dc.subjectContaminant risken
dc.titleClimate change enhances the mobilisation of naturally occurring metals in high altitude environments.en
dc.typeArticleen
dc.contributor.departmentUniv Arizona, Biosphere 2en
dc.contributor.departmentUSDA, Southwest Res Ctren
dc.identifier.journalSCIENCE OF THE TOTAL ENVIRONMENTen
dc.description.noteAvailable online 17 April 2016. 24 month embargo.en
dc.description.collectioninformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.en
dc.eprint.versionFinal accepted manuscripten

Related articles on PubMed

All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.