Show simple item record

dc.contributor.authorvan Bellen, S
dc.contributor.authorMauquoy, D
dc.contributor.authorHughes, PDM
dc.contributor.authorRoland, TP
dc.contributor.authorDaley, Tim
dc.contributor.authorLoader, NJ
dc.contributor.authorStreet-Perrott, FA
dc.contributor.authorRice, EM
dc.contributor.authorPancotto, VA
dc.contributor.authorPayne, RJ
dc.date.accessioned2017-02-08T15:39:33Z
dc.date.available2017-02-08T15:39:33Z
dc.date.issued2016-03
dc.identifier.issn0959-6836
dc.identifier.issn1477-0911
dc.identifier.urihttp://hdl.handle.net/10026.1/8435
dc.description.abstract

<jats:p> The ombrotrophic peat bogs of Tierra del Fuego are located within the southern westerly wind belt (SWWB), which dominates climate variability in this region. We have reconstructed late-Holocene water-table depths from three peat bogs and aimed to relate these records to shifts in regional climate. Water-table depths were quantified by the analysis of testate amoeba assemblages, and a regional transfer function was used to infer past water-table depths. During the last 2000 years, testate amoeba assemblages have been relatively stable, with a dominance of Difflugia pulex and Difflugia pristis type, and an increase in Assulina muscorum and other Euglyphida at the top of each section. Multivariate analyses show that water-table depth remained the main environmental variable explaining assemblages along the TiA12 core, but reconstructions were not significant for the two other cores. In line with the low variability in assemblages, water tables were relatively stable during the last 2000 years. Slightly wetter conditions were found between ~1400 and 900 cal. BP and a pronounced recent dry shift was reconstructed in all of the three peat profiles. Considering the regional climatic context, this recent shift may have been forced by a decrease in precipitation and warmer conditions linked to an increase in the importance of the SWWB. Nevertheless, we cannot exclude the influence of higher UV-B radiation resulting from the local degradation of the ozone layer since the late 1970s, which may have had an additional effect on the relative presence of A. muscorum in the southern Patagonian region. </jats:p>

dc.format.extent489-501
dc.languageen
dc.language.isoen
dc.publisherSAGE Publications
dc.subjectAssulina muscorum
dc.subjectpalaeoSig
dc.subjectPatagonia
dc.subjectSouthern Annular Mode
dc.subjectsouthern westerly wind
dc.subjectUV-B
dc.titleLate-Holocene climate dynamics recorded in the peat bogs of Tierra del Fuego, South America
dc.typejournal-article
dc.typeJournal Article
plymouth.author-urlhttps://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000371133100014&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=11bb513d99f797142bcfeffcc58ea008
plymouth.issue3
plymouth.volume26
plymouth.publication-statusPublished
plymouth.journalThe Holocene
dc.identifier.doi10.1177/0959683615609756
plymouth.organisational-group/Plymouth
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering
plymouth.organisational-group/Plymouth/Faculty of Science and Engineering/School of Geography, Earth and Environmental Sciences
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA
plymouth.organisational-group/Plymouth/REF 2021 Researchers by UoA/UoA14 Geography and Environmental Studies
plymouth.organisational-group/Plymouth/Users by role
plymouth.organisational-group/Plymouth/Users by role/Academics
dc.identifier.eissn1477-0911
dc.rights.embargoperiodNo embargo
rioxxterms.versionofrecord10.1177/0959683615609756
rioxxterms.licenseref.urihttp://www.rioxx.net/licenses/all-rights-reserved
rioxxterms.typeJournal Article/Review
plymouth.funderPalaeoclimate reconstructions from Tierra Del Fuego to detect Land-Ocean-Atmosphere Interactions::NERC
plymouth.oa-locationhttp://journals.sagepub.com/doi/10.1177/0959683615609756


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record


All items in PEARL are protected by copyright law.
Author manuscripts deposited to comply with open access mandates are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author.
Theme by 
Atmire NV