FN Archimer Export Format
PT J
TI Climatic variability in Mfabeni peatlands (South Africa) since the late Pleistocene
BT 
AF BAKER, Andrea
   PEDENTCHOUK, Nikolai
   ROUTH, Joyanto
   ROYCHOUDHURY, Alakendra N.
AS 1:1;2:2;3:3;4:1;
FF 1:;2:;3:;4:;
C1 Univ Stellenbosch, Dept Earth Sci, Stellenbosch, South Africa.
   Univ East Anglia, Sch Environm Sci, Norwich, Norfolk, England.
   Linkoping Univ, Dept Themat Studies Environm Change, Linkoping, Sweden.
C2 UNIV STELLENBOSCH, SOUTH AFRICA
   UNIV EAST ANGLIA, ENGLAND
   UNIV LINKOPING, SWEDEN
IF 4.334
TC 12
UR https://archimer.ifremer.fr/doc/00420/53176/83104.pdf
LA English
DT Article
CR MOZAPHARE-MD104
   OSIRIS 4 - MD 19
BO Marion Dufresne
DE ;Holocene;Pleistocene;Paleoclimatology;Southern Africa;Stable isotopes;Continental biomarkers;Peatland
AB It has been postulated that a bipolar seesaw interhemispheric mechanism dominated the relationship between the Northern and Southern hemisphere climates since the late Pleistocene. A key test for this proposition would be to undertake palaeoenvironmental studies on terrestrial archives in climatically sensitive regions. Southern Africa's contemporary C-3 and C-4 terrestrial plant distributions display a definitive geographical pattern dictated by different growing season rainfall and temperature zones; however, the region is generally archive poor due to its overall semi-arid climate and high relief topography. The Mfabeni peatland, with a basal age of c. 47 k yrs calibrated before present (kcal yr BP), is one of the oldest continuous coastal peat deposits in Southern Africa. Molecular leaf wax isotopes (delta C-13(wax)) were generated for a 810 cm long core, and combined with previously published bulk geochemical (delta C-13(bulk), %TOC), palynological, and stratigraphic data, to reconstruct the late Pleistocene and Holocene palaeoenvironments. We interpreted environmental shifts associated with the Heinrich 4, Last Glacial Maximum, deglacial and Holocene periods, which are consistent with adjacent Indian Ocean sea surface temperature records. However, the other shorter climate perturbations during the Heinrich 5, 3, 2, 1, Antarctic cold reversal and Younger Dryas, were muted, most likely due to local hydrological overprinting on the Mfabeni record. A general anti-phase sequence was observed between the Mfabeni record and better established Northern Hemisphere events, underpinning the bipolar seesaw interhemispheric mechanism proposed for global climate forcing since the Late Pleistocene. 
PY 2017
PD MAR
SO Quaternary Science Reviews
SN 0277-3791
PU Pergamon-elsevier Science Ltd
VL 160
UT 000397374200005
BP 57
EP 66
DI 10.1016/j.quascirev.2017.02.009
ID 53176
ER

EF