4000 Years of Changing Wetness in a Permafrost Polygon Peatland (Kytalyk, NE Siberia): A Comparative High‐Resolution Multi‐Proxy Study
Abstract Ice‐wedge polygon mires feature a micro‐relief of dry ridges, shallow wet depressions, deeper wet troughs and transitional sites, resulting in a local mosaic of vegetation. The correct recognition of these landscape elements in palaeoecological studies of peat sections requires insight abou...
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crwiley:10.1002/ppp.1869 2024-06-02T08:08:02+00:00 4000 Years of Changing Wetness in a Permafrost Polygon Peatland (Kytalyk, NE Siberia): A Comparative High‐Resolution Multi‐Proxy Study Teltewskoi, Annette Beermann, Fabian Beil, Ilka Bobrov, Anatoly De Klerk, Pim Lorenz, Sebastian Lüder, Arne Michaelis, Dierk Joosten, Hans 2016 http://dx.doi.org/10.1002/ppp.1869 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1869 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1869 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Permafrost and Periglacial Processes volume 27, issue 1, page 76-95 ISSN 1045-6740 1099-1530 journal-article 2016 crwiley https://doi.org/10.1002/ppp.1869 2024-05-03T11:47:00Z Abstract Ice‐wedge polygon mires feature a micro‐relief of dry ridges, shallow wet depressions, deeper wet troughs and transitional sites, resulting in a local mosaic of vegetation. The correct recognition of these landscape elements in palaeoecological studies of peat sections requires insight about the suitability of proxies and their potential for palaeoecological reconstruction in order to reconstruct vegetation and wetness patterns as well as dynamics. This paper analyses a 105.5 cm long peat section with a base dating to about 4000 cal yr BP from an ice‐wedge polygon mire near Kytalyk (NE Siberia). Pollen, macrofossils, testate amoebae, geochemistry and sediment properties were analysed in order to compare the suitability of these proxies to reconstruct past surface wetness. The proxies show similar wetness trends. Pollen and geochemistry data did not always permit wetness reconstruction, the former because many pollen types do not allow the identification of taxa at a low taxonomic resolution, the latter because later taphonomic processes modify chemical variables in deeper peat layers. Macrofossils provided the most detailed wetness reconstruction, because they could be identified to genera or species, for which the moisture requirements are accurately known from their present‐day distribution in ice‐wedge polygons. All proxies, except geochemistry, show an obvious change from wet to dry conditions at around 20 cm depth. However, as the proxies sometimes show contradictory results, a multi‐proxy approach is preferable over a single proxy interpretation as it allows the reconstruction of environmental development in a broader palaeoecological context. Copyright © 2016 John Wiley & Sons, Ltd. Article in Journal/Newspaper Ice permafrost Permafrost and Periglacial Processes wedge* Siberia Wiley Online Library Permafrost and Periglacial Processes 27 1 76 95 |
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Open Polar |
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Wiley Online Library |
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crwiley |
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English |
description |
Abstract Ice‐wedge polygon mires feature a micro‐relief of dry ridges, shallow wet depressions, deeper wet troughs and transitional sites, resulting in a local mosaic of vegetation. The correct recognition of these landscape elements in palaeoecological studies of peat sections requires insight about the suitability of proxies and their potential for palaeoecological reconstruction in order to reconstruct vegetation and wetness patterns as well as dynamics. This paper analyses a 105.5 cm long peat section with a base dating to about 4000 cal yr BP from an ice‐wedge polygon mire near Kytalyk (NE Siberia). Pollen, macrofossils, testate amoebae, geochemistry and sediment properties were analysed in order to compare the suitability of these proxies to reconstruct past surface wetness. The proxies show similar wetness trends. Pollen and geochemistry data did not always permit wetness reconstruction, the former because many pollen types do not allow the identification of taxa at a low taxonomic resolution, the latter because later taphonomic processes modify chemical variables in deeper peat layers. Macrofossils provided the most detailed wetness reconstruction, because they could be identified to genera or species, for which the moisture requirements are accurately known from their present‐day distribution in ice‐wedge polygons. All proxies, except geochemistry, show an obvious change from wet to dry conditions at around 20 cm depth. However, as the proxies sometimes show contradictory results, a multi‐proxy approach is preferable over a single proxy interpretation as it allows the reconstruction of environmental development in a broader palaeoecological context. Copyright © 2016 John Wiley & Sons, Ltd. |
format |
Article in Journal/Newspaper |
author |
Teltewskoi, Annette Beermann, Fabian Beil, Ilka Bobrov, Anatoly De Klerk, Pim Lorenz, Sebastian Lüder, Arne Michaelis, Dierk Joosten, Hans |
spellingShingle |
Teltewskoi, Annette Beermann, Fabian Beil, Ilka Bobrov, Anatoly De Klerk, Pim Lorenz, Sebastian Lüder, Arne Michaelis, Dierk Joosten, Hans 4000 Years of Changing Wetness in a Permafrost Polygon Peatland (Kytalyk, NE Siberia): A Comparative High‐Resolution Multi‐Proxy Study |
author_facet |
Teltewskoi, Annette Beermann, Fabian Beil, Ilka Bobrov, Anatoly De Klerk, Pim Lorenz, Sebastian Lüder, Arne Michaelis, Dierk Joosten, Hans |
author_sort |
Teltewskoi, Annette |
title |
4000 Years of Changing Wetness in a Permafrost Polygon Peatland (Kytalyk, NE Siberia): A Comparative High‐Resolution Multi‐Proxy Study |
title_short |
4000 Years of Changing Wetness in a Permafrost Polygon Peatland (Kytalyk, NE Siberia): A Comparative High‐Resolution Multi‐Proxy Study |
title_full |
4000 Years of Changing Wetness in a Permafrost Polygon Peatland (Kytalyk, NE Siberia): A Comparative High‐Resolution Multi‐Proxy Study |
title_fullStr |
4000 Years of Changing Wetness in a Permafrost Polygon Peatland (Kytalyk, NE Siberia): A Comparative High‐Resolution Multi‐Proxy Study |
title_full_unstemmed |
4000 Years of Changing Wetness in a Permafrost Polygon Peatland (Kytalyk, NE Siberia): A Comparative High‐Resolution Multi‐Proxy Study |
title_sort |
4000 years of changing wetness in a permafrost polygon peatland (kytalyk, ne siberia): a comparative high‐resolution multi‐proxy study |
publisher |
Wiley |
publishDate |
2016 |
url |
http://dx.doi.org/10.1002/ppp.1869 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fppp.1869 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ppp.1869 |
genre |
Ice permafrost Permafrost and Periglacial Processes wedge* Siberia |
genre_facet |
Ice permafrost Permafrost and Periglacial Processes wedge* Siberia |
op_source |
Permafrost and Periglacial Processes volume 27, issue 1, page 76-95 ISSN 1045-6740 1099-1530 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ppp.1869 |
container_title |
Permafrost and Periglacial Processes |
container_volume |
27 |
container_issue |
1 |
container_start_page |
76 |
op_container_end_page |
95 |
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1800753198363836416 |