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000860874 1001_ $$0P:(DE-Juel1)167587$$aKock, Sebastian$$b0$$eCorresponding author
000860874 245__ $$aLate Holocene environmental changes reconstructed from stable isotope and geochemical records from a cushion-plant peatland in the Chilean Central Andes (27°S)
000860874 260__ $$aNew York, NY [u.a.]$$bWiley$$c2019
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000860874 520__ $$aA Late Holocene paleoenvironmental record was obtained from the Lagunillas cushion peatland (LP, 27°12'S, 69°17'W), located in the dry Puna of the western Central Andes. Ten radiocarbon dates build the chronology for the last 1800 cal a BP. Analyses of stable isotopes on cellulose (d18Ocell, d13Ccell) and geochemicalproxies on organic matter (d13COM, d15Nbulk, TOC, TN, LOI, T535) were conducted to identify major paleoenvironmental changes in this record. Simultaneously, ambient water (d18O, d2H) and plant samples of the dominant species Oxychloe andina (d18Ocell, d13Ccell) reveal insights into modern conditions. The record revealsdistinct multi-centennial oscillations of peat layer thickness and d18Ocell. Decomposition, changes in the dominating plant species as well as in plant parts (leaves/roots) can be excluded as driving factors for these oscillations. Thus, d18Ocell seems to be externally forced and reflects humidity changes. Around 470 cal a BP a distinct change towards increased humidity occurred, lasting during the Little Ice Age until about 70 cal a BP. Humid conditions prevailed between 1530 and 1270 cal a BP. Increasing d18Ocell values since 30 cal a BP mark a trend towards again increased aridity.
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000860874 7001_ $$0P:(DE-HGF)0$$aSchittek, K.$$b1
000860874 7001_ $$0P:(DE-HGF)0$$aMächtle, B.$$b2
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000860874 7001_ $$0P:(DE-HGF)0$$aMaldonado, A.$$b4
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000860874 773__ $$0PERI:(DE-600)2031875-3$$a10.1002/jqs.3088$$gVol. 34, no. 2, p. 153 - 164$$n2$$p153 - 164$$tJournal of quaternary science$$v34$$x0267-8179$$y2019
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000860874 8564_ $$uhttps://juser.fz-juelich.de/record/860874/files/Kock_etal_2019_JQS_postprint.pdf$$yPublished on 2019-02-17. Available in OpenAccess from 2020-02-17.
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