Journal cover Journal topic
Climate of the Past An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 3.470 IF 3.470
  • IF 5-year value: 4.009 IF 5-year
    4.009
  • CiteScore value: 3.45 CiteScore
    3.45
  • SNIP value: 1.166 SNIP 1.166
  • IPP value: 3.28 IPP 3.28
  • SJR value: 1.929 SJR 1.929
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 64 Scimago H
    index 64
  • h5-index value: 43 h5-index 43
Volume 12, issue 5
Clim. Past, 12, 1165–1180, 2016
https://doi.org/10.5194/cp-12-1165-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Climate change and human impact in Central and South America...

Clim. Past, 12, 1165–1180, 2016
https://doi.org/10.5194/cp-12-1165-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 13 May 2016

Research article | 13 May 2016

A high-altitude peatland record of environmental changes in the NW Argentine Andes (24 ° S) over the last 2100 years

Karsten Schittek1,6, Sebastian T. Kock1,2, Andreas Lücke2, Jonathan Hense3, Christian Ohlendorf4, Julio J. Kulemeyer5, Liliana C. Lupo5, and Frank Schäbitz6 Karsten Schittek et al.
  • 1Geographical Institute, University of Heidelberg, Heidelberg, Germany
  • 2Institute of Bio- and Geosciences, IGB-3: Agrosphere, Research Center Jülich, Jülich, Germany
  • 3Nees Institute, Department of Biology, University of Bonn, Bonn, Germany
  • 4GEOPOLAR, Institute of Geography, University of Bremen, Bremen, Germany
  • 5Centro de Investigación y Transferencia de Jujuy (CIT-Jujuy), CONICET/National University of Jujuy, Jujuy, Argentina
  • 6Institute of Geography Education, University of Cologne, Cologne, Germany

Abstract. High-altitude cushion peatlands are versatile archives for high-resolution palaeoenvironmental studies, due to their high accumulation rates, range of proxies, and sensitivity to climatic and/or human-induced changes. Especially within the Central Andes, the knowledge about climate conditions during the Holocene is limited. In this study, we present the environmental and climatic history for the last 2100 years of Cerro Tuzgle peatland (CTP), located in the dry Puna of NW Argentina, based on a multi-proxy approach. X-ray fluorescence (XRF), stable isotope and element content analyses (δ13C, δ15N, TN and TOC) were conducted to analyse the inorganic geochemistry throughout the sequence, revealing changes in the peatlands' past redox conditions. Pollen assemblages give an insight into substantial environmental changes on a regional scale. The palaeoclimate varied significantly during the last 2100 years. The results reflect prominent late Holocene climate anomalies and provide evidence that in situ moisture changes were coupled to the migration of the Intertropical Convergence Zone (ITCZ). A period of sustained dry conditions prevailed from around 150 BC to around AD 150. A more humid phase dominated between AD 200 and AD 550. Afterwards, the climate was characterised by changes between drier and wetter conditions, with droughts at around AD 650–800 and AD  1000–1100. Volcanic forcing at the beginning of the 19th century (1815 Tambora eruption) seems to have had an impact on climatic settings in the Central Andes. In the past, the peatland recovered from climatic perturbations. Today, CTP is heavily degraded by human interventions, and the peat deposit is becoming increasingly susceptible to erosion and incision.

Publications Copernicus
Download
Short summary
Cushion peatlands are versatile climate archives for the study of past environmental changes. We present the environmental history for the last 2100 years of Cerro Tuzgle peatland, which is located in the NW Argentine Puna. The results reflect prominent late Holocene climate anomalies and provide evidence that Northern Hemisphere climate oscillations were extensive. Volcanic forcing at the beginning of the 19th century seems to have had an impact on climatic settings in the Central Andes
Cushion peatlands are versatile climate archives for the study of past environmental changes. We...
Citation