Sedimentology and paleontology on core Lz1104 from Lake Hjort, Greenland
Two sediment cores of 70 and 252 cm length were recovered from Hjort Sø, a small lake on Store Koldewey, Northeast Greenland, and studied with a multidisciplinary approach in order to reconstruct the local environmental history and to test the relevance of proxies for paleoenvironmental information....
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.760682 2023-05-15T15:01:56+02:00 Sedimentology and paleontology on core Lz1104 from Lake Hjort, Greenland Wagner, Bernd Bennike, Ole Bos, Johanna A A Cremer, Holger Lotter, André F Melles, Martin LATITUDE: 76.433100 * LONGITUDE: -18.761400 * DATE/TIME START: 2003-08-15T00:00:00 * DATE/TIME END: 2003-08-15T00:00:00 2008-05-15 application/zip, 9 datasets https://doi.pangaea.de/10.1594/PANGAEA.760682 https://doi.org/10.1594/PANGAEA.760682 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.760682 https://doi.org/10.1594/PANGAEA.760682 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Wagner, Bernd; Bennike, Ole; Bos, Johanna A A; Cremer, Holger; Lotter, André F; Melles, Martin (2008): A multidisciplinary study of Holocene sediment records from Hjort Sø on Store Koldewey, Northeast Greenland. Journal of Paleolimnology, 39(3), 381-398, https://doi.org/10.1007/s10933-007-9120-3 AWI Arctic Land Expedition GCUWI GL-Land_2003_ EastGreenland Gravity corer UWITEC Gravity corer (Russian type) Greenland2003 Hjort Lake central Store Koldewey NE-Greenland Lz1104 Lz1104-1 Lz1104-5 RGC Dataset 2008 ftpangaea https://doi.org/10.1594/PANGAEA.760682 https://doi.org/10.1007/s10933-007-9120-3 2023-01-20T07:32:10Z Two sediment cores of 70 and 252 cm length were recovered from Hjort Sø, a small lake on Store Koldewey, Northeast Greenland, and studied with a multidisciplinary approach in order to reconstruct the local environmental history and to test the relevance of proxies for paleoenvironmental information. The basal sediments from the longer core are dominated by clastic matter, which was likely deposited during deglaciation of the lake basin. These clastic sediments are overlain by gyttja, which is also present throughout the shorter core. AMS radiocarbon dating was conducted on plant macrofossils of 11 samples from the gyttja in both cores. A reliable chronology was established for both cores, which dated the onset of organic accumulation at 9,500 cal. year BP. The Holocene temperature development, with an early to mid Holocene thermal maximum, is best reflected in the grain-size composition. Nutrient availability was apparently low during the early Holocene and led to low productivity in the lake and its vicinity. From ca. 7,000 cal. year BP, productivity in the lake increased significantly, probably induced by external nutrient input from goose excrements. From this time, micro- and macrofossil remains reflect relatively well the climate history of East Greenland, with a cooling during the middle Holocene, the medieval warming, and the Little Ice Age. The amount of organic matter in the sequence seems to be more affected by lake ice cover or by nutrient supply from the catchment than by temperature changes. The record from Hjort Sø thus reveals the difficulties in interpreting sedimentary records from high arctic regions. 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(-18.761400,-18.761400,76.433100,76.433100) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI Arctic Land Expedition GCUWI GL-Land_2003_ EastGreenland Gravity corer UWITEC Gravity corer (Russian type) Greenland2003 Hjort Lake central Store Koldewey NE-Greenland Lz1104 Lz1104-1 Lz1104-5 RGC |
spellingShingle |
AWI Arctic Land Expedition GCUWI GL-Land_2003_ EastGreenland Gravity corer UWITEC Gravity corer (Russian type) Greenland2003 Hjort Lake central Store Koldewey NE-Greenland Lz1104 Lz1104-1 Lz1104-5 RGC Wagner, Bernd Bennike, Ole Bos, Johanna A A Cremer, Holger Lotter, André F Melles, Martin Sedimentology and paleontology on core Lz1104 from Lake Hjort, Greenland |
topic_facet |
AWI Arctic Land Expedition GCUWI GL-Land_2003_ EastGreenland Gravity corer UWITEC Gravity corer (Russian type) Greenland2003 Hjort Lake central Store Koldewey NE-Greenland Lz1104 Lz1104-1 Lz1104-5 RGC |
description |
Two sediment cores of 70 and 252 cm length were recovered from Hjort Sø, a small lake on Store Koldewey, Northeast Greenland, and studied with a multidisciplinary approach in order to reconstruct the local environmental history and to test the relevance of proxies for paleoenvironmental information. The basal sediments from the longer core are dominated by clastic matter, which was likely deposited during deglaciation of the lake basin. These clastic sediments are overlain by gyttja, which is also present throughout the shorter core. AMS radiocarbon dating was conducted on plant macrofossils of 11 samples from the gyttja in both cores. A reliable chronology was established for both cores, which dated the onset of organic accumulation at 9,500 cal. year BP. The Holocene temperature development, with an early to mid Holocene thermal maximum, is best reflected in the grain-size composition. Nutrient availability was apparently low during the early Holocene and led to low productivity in the lake and its vicinity. From ca. 7,000 cal. year BP, productivity in the lake increased significantly, probably induced by external nutrient input from goose excrements. From this time, micro- and macrofossil remains reflect relatively well the climate history of East Greenland, with a cooling during the middle Holocene, the medieval warming, and the Little Ice Age. The amount of organic matter in the sequence seems to be more affected by lake ice cover or by nutrient supply from the catchment than by temperature changes. The record from Hjort Sø thus reveals the difficulties in interpreting sedimentary records from high arctic regions. |
format |
Dataset |
author |
Wagner, Bernd Bennike, Ole Bos, Johanna A A Cremer, Holger Lotter, André F Melles, Martin |
author_facet |
Wagner, Bernd Bennike, Ole Bos, Johanna A A Cremer, Holger Lotter, André F Melles, Martin |
author_sort |
Wagner, Bernd |
title |
Sedimentology and paleontology on core Lz1104 from Lake Hjort, Greenland |
title_short |
Sedimentology and paleontology on core Lz1104 from Lake Hjort, Greenland |
title_full |
Sedimentology and paleontology on core Lz1104 from Lake Hjort, Greenland |
title_fullStr |
Sedimentology and paleontology on core Lz1104 from Lake Hjort, Greenland |
title_full_unstemmed |
Sedimentology and paleontology on core Lz1104 from Lake Hjort, Greenland |
title_sort |
sedimentology and paleontology on core lz1104 from lake hjort, greenland |
publisher |
PANGAEA |
publishDate |
2008 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.760682 https://doi.org/10.1594/PANGAEA.760682 |
op_coverage |
LATITUDE: 76.433100 * LONGITUDE: -18.761400 * DATE/TIME START: 2003-08-15T00:00:00 * DATE/TIME END: 2003-08-15T00:00:00 |
long_lat |
ENVELOPE(-18.820,-18.820,76.364,76.364) ENVELOPE(-18.761400,-18.761400,76.433100,76.433100) |
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: Wagner, Bernd; Bennike, Ole; Bos, Johanna A A; Cremer, Holger; Lotter, André F; Melles, Martin (2008): A multidisciplinary study of Holocene sediment records from Hjort Sø on Store Koldewey, Northeast Greenland. Journal of Paleolimnology, 39(3), 381-398, https://doi.org/10.1007/s10933-007-9120-3 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.760682 https://doi.org/10.1594/PANGAEA.760682 |
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.760682 https://doi.org/10.1007/s10933-007-9120-3 |
_version_ |
1766333931164008448 |