Lake sediments from Store Koldewey, Northeast Greenland
A 2.9 m long sedimentary record was studied from a small lake, here referred to as Duck Lake, located at 76°25'N, 18°45'W on Store Koldewey, an elongated island off the coast of Northeast Greenland. The sediments were investigated for their geophysical and biogeochemical characteristics, a...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.727695 2023-05-15T15:00:34+02:00 Lake sediments from Store Koldewey, Northeast Greenland Klug, Martin Schmidt, Steffi Bennike, Ole Heiri, Oliver Melles, Martin Wagner, Bernd LATITUDE: 76.420800 * LONGITUDE: -18.750000 * DATE/TIME START: 2003-08-22T00:00:00 * DATE/TIME END: 2003-08-22T00:00:00 2009-09-22 application/zip, 4 datasets https://doi.pangaea.de/10.1594/PANGAEA.727695 https://doi.org/10.1594/PANGAEA.727695 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.727695 https://doi.org/10.1594/PANGAEA.727695 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Klug, Martin; Schmidt, Steffi; Bennike, Ole; Heiri, Oliver; Melles, Martin; Wagner, Bernd (2009): Lake sediments from Store Koldewey, Northeast Greenland, as archive of Late Pleistocene and Holocene climatic and environmental changes. Boreas, 38(1), 59-71, https://doi.org/10.1111/j.1502-3885.2008.00038.x AWI Arctic Land Expedition COMPCORE Composite Core Duck_Lake Duck Lake central Store Koldewey NE-Greenland GL-Land_2003_ EastGreenland Greenland2003 Lz1103 Water sampler UWITEC WSUWI Dataset 2009 ftpangaea https://doi.org/10.1594/PANGAEA.727695 https://doi.org/10.1111/j.1502-3885.2008.00038.x 2023-01-20T07:31:31Z A 2.9 m long sedimentary record was studied from a small lake, here referred to as Duck Lake, located at 76°25'N, 18°45'W on Store Koldewey, an elongated island off the coast of Northeast Greenland. The sediments were investigated for their geophysical and biogeochemical characteristics, and for their fossil chironomid assemblages. Organic matter began to accumulate in the lake at 9.1 cal. kyr BP, which provides a minimum age for the deglaciation of the basin. Although the early to mid-Holocene is known as a thermal maximum in East Greenland, organic matter accumulation in the lake remained low during the early Holocene, likely due to late plant immigration and lack of nutrient availability. Organic matter accumulation increased during the middle and late Holocene, when temperatures in East Greenland gradually decreased. Enhanced soil formation probably led to higher nutrient availability and increased production in the lake. Chironomids are abundant throughout the record after 9.1 cal. kyr BP and seem to react sensitively to changes in temperature and nutrient availability. It is concluded that relative temperature reconstructions based on biogeochemical data have to be regarded critically, particularly in the period shortly after deglaciation when nutrient availability was low. Chironomids may be a suitable tool for climatic reconstructions even in those high arctic environments. However, a better understanding of the ecology of chironomids under these extreme conditions is needed. Dataset Arctic East Greenland Greenland Store koldewey PANGAEA - Data Publisher for Earth & Environmental Science Arctic Greenland Store Koldewey ENVELOPE(-18.820,-18.820,76.364,76.364) ENVELOPE(-18.750000,-18.750000,76.420800,76.420800) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI Arctic Land Expedition COMPCORE Composite Core Duck_Lake Duck Lake central Store Koldewey NE-Greenland GL-Land_2003_ EastGreenland Greenland2003 Lz1103 Water sampler UWITEC WSUWI |
spellingShingle |
AWI Arctic Land Expedition COMPCORE Composite Core Duck_Lake Duck Lake central Store Koldewey NE-Greenland GL-Land_2003_ EastGreenland Greenland2003 Lz1103 Water sampler UWITEC WSUWI Klug, Martin Schmidt, Steffi Bennike, Ole Heiri, Oliver Melles, Martin Wagner, Bernd Lake sediments from Store Koldewey, Northeast Greenland |
topic_facet |
AWI Arctic Land Expedition COMPCORE Composite Core Duck_Lake Duck Lake central Store Koldewey NE-Greenland GL-Land_2003_ EastGreenland Greenland2003 Lz1103 Water sampler UWITEC WSUWI |
description |
A 2.9 m long sedimentary record was studied from a small lake, here referred to as Duck Lake, located at 76°25'N, 18°45'W on Store Koldewey, an elongated island off the coast of Northeast Greenland. The sediments were investigated for their geophysical and biogeochemical characteristics, and for their fossil chironomid assemblages. Organic matter began to accumulate in the lake at 9.1 cal. kyr BP, which provides a minimum age for the deglaciation of the basin. Although the early to mid-Holocene is known as a thermal maximum in East Greenland, organic matter accumulation in the lake remained low during the early Holocene, likely due to late plant immigration and lack of nutrient availability. Organic matter accumulation increased during the middle and late Holocene, when temperatures in East Greenland gradually decreased. Enhanced soil formation probably led to higher nutrient availability and increased production in the lake. Chironomids are abundant throughout the record after 9.1 cal. kyr BP and seem to react sensitively to changes in temperature and nutrient availability. It is concluded that relative temperature reconstructions based on biogeochemical data have to be regarded critically, particularly in the period shortly after deglaciation when nutrient availability was low. Chironomids may be a suitable tool for climatic reconstructions even in those high arctic environments. However, a better understanding of the ecology of chironomids under these extreme conditions is needed. |
format |
Dataset |
author |
Klug, Martin Schmidt, Steffi Bennike, Ole Heiri, Oliver Melles, Martin Wagner, Bernd |
author_facet |
Klug, Martin Schmidt, Steffi Bennike, Ole Heiri, Oliver Melles, Martin Wagner, Bernd |
author_sort |
Klug, Martin |
title |
Lake sediments from Store Koldewey, Northeast Greenland |
title_short |
Lake sediments from Store Koldewey, Northeast Greenland |
title_full |
Lake sediments from Store Koldewey, Northeast Greenland |
title_fullStr |
Lake sediments from Store Koldewey, Northeast Greenland |
title_full_unstemmed |
Lake sediments from Store Koldewey, Northeast Greenland |
title_sort |
lake sediments from store koldewey, northeast greenland |
publisher |
PANGAEA |
publishDate |
2009 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.727695 https://doi.org/10.1594/PANGAEA.727695 |
op_coverage |
LATITUDE: 76.420800 * LONGITUDE: -18.750000 * DATE/TIME START: 2003-08-22T00:00:00 * DATE/TIME END: 2003-08-22T00:00:00 |
long_lat |
ENVELOPE(-18.820,-18.820,76.364,76.364) ENVELOPE(-18.750000,-18.750000,76.420800,76.420800) |
geographic |
Arctic Greenland Store Koldewey |
geographic_facet |
Arctic Greenland Store Koldewey |
genre |
Arctic East Greenland Greenland Store koldewey |
genre_facet |
Arctic East Greenland Greenland Store koldewey |
op_source |
Supplement to: Klug, Martin; Schmidt, Steffi; Bennike, Ole; Heiri, Oliver; Melles, Martin; Wagner, Bernd (2009): Lake sediments from Store Koldewey, Northeast Greenland, as archive of Late Pleistocene and Holocene climatic and environmental changes. Boreas, 38(1), 59-71, https://doi.org/10.1111/j.1502-3885.2008.00038.x |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.727695 https://doi.org/10.1594/PANGAEA.727695 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.727695 https://doi.org/10.1111/j.1502-3885.2008.00038.x |
_version_ |
1766332662218227712 |