Please use this identifier to cite or link to this item:
Full metadata record
DC FieldValueLanguage
dc.contributor.authorMcCulloch, Robert Den_UK
dc.contributor.authorMansilla, Claudia Aen_UK
dc.contributor.authorRoberts, Stephen Jen_UK
dc.contributor.authorTisdall, Eileen Wen_UK
dc.description.abstractThe glacial and vegetation patterns of Patagonia are strongly correlated to the behaviour of the Southern westerly winds (SWWs) with palaeoenvironmental evidence for the behaviour of the SWWs interpreted as past changes in southern hemisphere climate and ocean currents. To fully define shifts in the position and intensity of the SWWs palaeoenvironmental data sets must be generated from climate sensitive proxies with sites located in regions that are responsive to changes in effective moisture. Here we present a c. 15,700 yr-old record from a peat bog at Punta Arenas (53◦09′S) which was analysed for pollen, pollen preservation, charcoal and organic content to reconstruct changes in the surrounding vegetation, fire history and mire surface wetness. The peat bog lies in a closed basin and so environmental changes likely reflect changes in effective moisture primarily driven by fluctuations in precipitation. During the Late glacial the landscape was virtually treeless and dominated by cold-tolerant steppe/tundra vegetation. This was followed by substantial vegetation changes as Nothofagus woodland expanded and the local site transitioned from a small lake to a fen and later a raised mire. The Early and Mid-Holocene (11,600–6000 cal a BP) was marked by a period of sustained drier conditions evidenced by reduced pollen preservation and increased fire activity. After c. 4600 cal a BP there was a shift to increased effective moisture superimposed with higher magnitude and higher frequency changes in precipitation. The palaeoenvironmental record presented here is used to better define the nature and timing of latitudinal shifts in the position of the SWWs. Careful interpretation of the Nothofagus pollen signal is required as during drier periods small increases in humidity can drive large woodland responses in the pollen record while during periods of higher humidity the woodland may appear to be unresponsive to climatic changes.en_UK
dc.publisherElsevier BVen_UK
dc.relationMcCulloch RD, Mansilla CA, Roberts SJ & Tisdall EW (2023) Late Quaternary climatic inferences from southern Patagonia (∼53°S): A holistic palaeoecological approach to tracking the behaviour of the southern westerly winds. <i>Palaeogeography, Palaeoclimatology, Palaeoecology</i>, 631, Art. No.: 111822.
dc.rightsThis item has been embargoed for a period. During the embargo please use the Request a Copy feature at the foot of the Repository record to request a copy directly from the author. You can only request a copy if you wish to use this work for your own research or private study. Accepted refereed manuscript of: McCulloch RD, Mansilla CA, Roberts SJ & Tisdall EW (2023) Late Quaternary climatic inferences from southern Patagonia ( 53°S): A holistic palaeoecological approach to tracking the behaviour of the southern westerly winds. Palaeogeography, Palaeoclimatology, Palaeoecology, 631, Art. No.: 111822. © 2023, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
dc.subjectPollen analysisen_UK
dc.subjectPollen preservationen_UK
dc.subjectPeat bogsen_UK
dc.subjectForest-steppe ecotoneen_UK
dc.titleLate Quaternary climatic inferences from southern Patagonia (∼53°S): A holistic palaeoecological approach to tracking the behaviour of the southern westerly windsen_UK
dc.typeJournal Articleen_UK
dc.rights.embargoreason[McCullochetalLateQuaternaryclimaticinferencesAAMPPP2023.pdf] Publisher requires embargo of 12 months after publication.en_UK
dc.citation.jtitlePalaeogeography, Palaeoclimatology, Palaeoecologyen_UK
dc.type.statusAM - Accepted Manuscripten_UK
dc.contributor.affiliationUniversity of Edinburghen_UK
dc.contributor.affiliationUniversidad de Magallanesen_UK
dc.contributor.affiliationBritish Antarctic Surveyen_UK
dc.contributor.affiliationBiological and Environmental Sciencesen_UK
rioxxterms.apcnot requireden_UK
rioxxterms.typeJournal Article/Reviewen_UK
local.rioxx.authorMcCulloch, Robert D|en_UK
local.rioxx.authorMansilla, Claudia A|en_UK
local.rioxx.authorRoberts, Stephen J|en_UK
local.rioxx.authorTisdall, Eileen W|0000-0002-9902-4461en_UK
local.rioxx.projectInternal Project|University of Stirling|
Appears in Collections:Biological and Environmental Sciences Journal Articles

Files in This Item:
File Description SizeFormat 
McCullochetalLateQuaternaryclimaticinferencesAAMPPP2023.pdfFulltext - Accepted Version2.54 MBAdobe PDFUnder Embargo until 2024-09-29    Request a copy

This item is protected by original copyright

A file in this item is licensed under a Creative Commons License Creative Commons

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

The metadata of the records in the Repository are available under the CC0 public domain dedication: No Rights Reserved

If you believe that any material held in STORRE infringes copyright, please contact providing details and we will remove the Work from public display in STORRE and investigate your claim.