Lithological and biochemical properties in sediments of Lama Lake as indicators for the late Pleistocene and Holocene ecosystem development of the southern Taymyr Peninsula, Central Siberia
In order to evaluate the sensitivity of aquatic and terrestrial ecosystems to climatic changes, lithological (sediment structure and color, grain size, physical properties) and biochemical (TOC, TOC/TN, δ 13 C of TOC and carbonates) investigations were carried out on an 11.12 m‐long sediment core fr...
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crwiley:10.1111/j.1502-3885.1999.tb00212.x 2024-06-02T08:15:11+00:00 Lithological and biochemical properties in sediments of Lama Lake as indicators for the late Pleistocene and Holocene ecosystem development of the southern Taymyr Peninsula, Central Siberia HARWART, STEFANIE HAGEDORN, BIRGIT MELLES, MARTIN WAND, ULRICH 1999 http://dx.doi.org/10.1111/j.1502-3885.1999.tb00212.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1999.tb00212.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1999.tb00212.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Boreas volume 28, issue 1, page 167-180 ISSN 0300-9483 1502-3885 journal-article 1999 crwiley https://doi.org/10.1111/j.1502-3885.1999.tb00212.x 2024-05-03T10:50:05Z In order to evaluate the sensitivity of aquatic and terrestrial ecosystems to climatic changes, lithological (sediment structure and color, grain size, physical properties) and biochemical (TOC, TOC/TN, δ 13 C of TOC and carbonates) investigations were carried out on an 11.12 m‐long sediment core from Lama Lake (Central Siberia, Putorana Plateau). According to the pollen data, the sequence represents the termination of the Pleistocene, and the entire Holocene. It is composed of highly terrigenous and stratified clays and silts. Sediment structure, grain‐size distribution, carbonate contents and physical properties of the sediment indicate that glaciers were present in the catchment area of Lama Lake during the period Oldest Dryas to AllerØd. For the same time period, δ 13 C values of TOC give indications of a perennial ice cover. Since the AllerØd, organic matter accumulation has increased, caused by an increasing input of land vegetation and aquatic primary production as revealed by relations TOC contents, TOC/TN ratios and δ 13 C values of TOC. During the Holocene climatic optimum, in late Preboreal and Boreal times, biogenic primary production in Lama Lake reached its maximum and the vegetation in the catchment area changed from grassy tundra to a dense forest. From the Atlantic period to the present, small variations in δ 13 C values of TOC and TOC contents are probably related to the location of Lama Lake on the border between grass and wooded steppe, leading to responses of environmental conditions to even small changes in climate. Article in Journal/Newspaper Taymyr Taymyr Peninsula Tundra Siberia Wiley Online Library Taymyr ENVELOPE(89.987,89.987,68.219,68.219) Boreas 28 1 167 180 |
institution |
Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
In order to evaluate the sensitivity of aquatic and terrestrial ecosystems to climatic changes, lithological (sediment structure and color, grain size, physical properties) and biochemical (TOC, TOC/TN, δ 13 C of TOC and carbonates) investigations were carried out on an 11.12 m‐long sediment core from Lama Lake (Central Siberia, Putorana Plateau). According to the pollen data, the sequence represents the termination of the Pleistocene, and the entire Holocene. It is composed of highly terrigenous and stratified clays and silts. Sediment structure, grain‐size distribution, carbonate contents and physical properties of the sediment indicate that glaciers were present in the catchment area of Lama Lake during the period Oldest Dryas to AllerØd. For the same time period, δ 13 C values of TOC give indications of a perennial ice cover. Since the AllerØd, organic matter accumulation has increased, caused by an increasing input of land vegetation and aquatic primary production as revealed by relations TOC contents, TOC/TN ratios and δ 13 C values of TOC. During the Holocene climatic optimum, in late Preboreal and Boreal times, biogenic primary production in Lama Lake reached its maximum and the vegetation in the catchment area changed from grassy tundra to a dense forest. From the Atlantic period to the present, small variations in δ 13 C values of TOC and TOC contents are probably related to the location of Lama Lake on the border between grass and wooded steppe, leading to responses of environmental conditions to even small changes in climate. |
format |
Article in Journal/Newspaper |
author |
HARWART, STEFANIE HAGEDORN, BIRGIT MELLES, MARTIN WAND, ULRICH |
spellingShingle |
HARWART, STEFANIE HAGEDORN, BIRGIT MELLES, MARTIN WAND, ULRICH Lithological and biochemical properties in sediments of Lama Lake as indicators for the late Pleistocene and Holocene ecosystem development of the southern Taymyr Peninsula, Central Siberia |
author_facet |
HARWART, STEFANIE HAGEDORN, BIRGIT MELLES, MARTIN WAND, ULRICH |
author_sort |
HARWART, STEFANIE |
title |
Lithological and biochemical properties in sediments of Lama Lake as indicators for the late Pleistocene and Holocene ecosystem development of the southern Taymyr Peninsula, Central Siberia |
title_short |
Lithological and biochemical properties in sediments of Lama Lake as indicators for the late Pleistocene and Holocene ecosystem development of the southern Taymyr Peninsula, Central Siberia |
title_full |
Lithological and biochemical properties in sediments of Lama Lake as indicators for the late Pleistocene and Holocene ecosystem development of the southern Taymyr Peninsula, Central Siberia |
title_fullStr |
Lithological and biochemical properties in sediments of Lama Lake as indicators for the late Pleistocene and Holocene ecosystem development of the southern Taymyr Peninsula, Central Siberia |
title_full_unstemmed |
Lithological and biochemical properties in sediments of Lama Lake as indicators for the late Pleistocene and Holocene ecosystem development of the southern Taymyr Peninsula, Central Siberia |
title_sort |
lithological and biochemical properties in sediments of lama lake as indicators for the late pleistocene and holocene ecosystem development of the southern taymyr peninsula, central siberia |
publisher |
Wiley |
publishDate |
1999 |
url |
http://dx.doi.org/10.1111/j.1502-3885.1999.tb00212.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1502-3885.1999.tb00212.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1502-3885.1999.tb00212.x |
long_lat |
ENVELOPE(89.987,89.987,68.219,68.219) |
geographic |
Taymyr |
geographic_facet |
Taymyr |
genre |
Taymyr Taymyr Peninsula Tundra Siberia |
genre_facet |
Taymyr Taymyr Peninsula Tundra Siberia |
op_source |
Boreas volume 28, issue 1, page 167-180 ISSN 0300-9483 1502-3885 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1502-3885.1999.tb00212.x |
container_title |
Boreas |
container_volume |
28 |
container_issue |
1 |
container_start_page |
167 |
op_container_end_page |
180 |
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1800739284886487040 |