The search result changed since you submitted your search request. Documents might be displayed in a different sort order.
  • search hit 20 of 721
Back to Result List

Late Holocene ice-wedge polygon dynamics in northeastern Siberian coastal lowlands

  • Ice-wedge polygons are common features of northeastern Siberian lowland periglacial tundra landscapes. To deduce the formation and alternation of ice-wedge polygons in the Kolyma Delta and in the Indigirka Lowland, we studied shallow cores, up to 1.3 m deep, from polygon center and rim locations. The formation of well-developed low-center polygons with elevated rims and wet centers is shown by the beginning of peat accumulation, increased organic matter contents, and changes in vegetation cover from Poaceae-, Alnus-, and Betula-dominated pollen spectra to dominating Cyperaceae and Botryoccocus presence, and Carex and Drepanocladus revolvens macro-fossils. Tecamoebae data support such a change from wetland to open-water conditions in polygon centers by changes from dominating eurybiontic and sphagnobiontic to hydrobiontic species assemblages. The peat accumulation indicates low-center polygon formation and started between 2380 +/- 30 and 1676 +/- 32 years before present (BP) in the Kolyma Delta. We recorded an opposite change fromIce-wedge polygons are common features of northeastern Siberian lowland periglacial tundra landscapes. To deduce the formation and alternation of ice-wedge polygons in the Kolyma Delta and in the Indigirka Lowland, we studied shallow cores, up to 1.3 m deep, from polygon center and rim locations. The formation of well-developed low-center polygons with elevated rims and wet centers is shown by the beginning of peat accumulation, increased organic matter contents, and changes in vegetation cover from Poaceae-, Alnus-, and Betula-dominated pollen spectra to dominating Cyperaceae and Botryoccocus presence, and Carex and Drepanocladus revolvens macro-fossils. Tecamoebae data support such a change from wetland to open-water conditions in polygon centers by changes from dominating eurybiontic and sphagnobiontic to hydrobiontic species assemblages. The peat accumulation indicates low-center polygon formation and started between 2380 +/- 30 and 1676 +/- 32 years before present (BP) in the Kolyma Delta. We recorded an opposite change from open-water to wetland conditions because of rim degradation and consecutive high-center polygon formation in the Indigirka Lowland between 2144 +/- 33 and 1632 +/- 32 years BP. The late Holocene records of polygon landscape development reveal changes in local hydrology and soil moisture.show moreshow less

Download full text files

  • pmnr719.pdfeng
    (3989KB)

    SHA-1: f3bcd318c11707ba0bfb589194e20f244afebd51

Export metadata

Additional Services

Search Google Scholar Statistics
Metadaten
Author details:Lutz SchirrmeisterORCiDGND, Anatoly BobrovORCiD, Elena RaschkeORCiD, Ulrike HerzschuhORCiDGND, Jens StraussORCiD, Luidmila Agafyevna PestryakovaORCiD, Sebastian WetterichORCiD
URN:urn:nbn:de:kobv:517-opus4-426603
DOI:https://doi.org/10.25932/publishup-42660
ISSN:1866-8372
Title of parent work (English):Postprints der Universität Potsdam Mathematisch-Naturwissenschaftliche Reihe
Publication series (Volume number):Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe (719)
Publication type:Postprint
Language:English
Date of first publication:2019/05/29
Publication year:2018
Publishing institution:Universität Potsdam
Release date:2019/05/29
Tag:cryolithology; paleoecology; permafrost; plant macro-fossils; pollen; radiocarbon dating; rhizopods
Issue:719
Number of pages:19
Source:Arctic, Antarctic, and Alpine Research 50 (2018) 1, Art. e1462595 DOI: 10.1080/15230430.2018.1462595
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät
DDC classification:5 Naturwissenschaften und Mathematik / 55 Geowissenschaften, Geologie / 550 Geowissenschaften
5 Naturwissenschaften und Mathematik / 57 Biowissenschaften; Biologie / 570 Biowissenschaften; Biologie
Peer review:Referiert
Publishing method:Open Access
Grantor:Taylor & Francis Open Access Agreement
License (German):License LogoCC-BY - Namensnennung 4.0 International
External remark:Bibliographieeintrag der Originalveröffentlichung/Quelle
Accept ✔
This website uses technically necessary session cookies. By continuing to use the website, you agree to this. You can find our privacy policy here.