Diatom record of sediment profile PG1214, East Greenland
A 341 cm long sediment sequence was recovered from the unofficially named Raffles Sø on Raffles Ø, outer Scoresby Sund region, East Greenland. The sediment sequence consists in the upper part (0-230 cm) of a stratified gyttja enriched in organic carbon and biogenic silica whereas the lower core part...
Main Authors: | , , , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2001
|
Subjects: | |
Online Access: | https://doi.pangaea.de/10.1594/PANGAEA.734138 https://doi.org/10.1594/PANGAEA.734138 |
id |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.734138 |
---|---|
record_format |
openpolar |
spelling |
ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.734138 2023-05-15T15:17:30+02:00 Diatom record of sediment profile PG1214, East Greenland Cremer, Holger Wagner, Bernd Melles, Martin Hubberten, Hans-Wolfgang LATITUDE: 70.595000 * LONGITUDE: -21.535000 * DATE/TIME START: 1994-09-24T00:00:00 * DATE/TIME END: 1994-09-24T00:00:00 2001-02-25 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.734138 https://doi.org/10.1594/PANGAEA.734138 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.734138 https://doi.org/10.1594/PANGAEA.734138 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Cremer, Holger; Wagner, Bernd; Melles, Martin; Hubberten, Hans-Wolfgang (2001): The postglacial environmental development of Raffles Sø, East Greenland: inferences from a 10,000 year diatom record. Journal of Paleolimnology, 26(1), 67-87, https://doi.org/10.1023/A:1011179321529 AWI_PerDyn AWI Arctic Land Expedition COMPCORE Composite Core GL-Land_1994 Greenland94 KOL_P Permafrost Research (Periglacial Dynamics) @ AWI PG1214 PG1214-3 PG1214-4 Piston corer Potsdam Quaternary Environment of the Eurasian North QUEEN Raffles Sø (lake) Dataset 2001 ftpangaea https://doi.org/10.1594/PANGAEA.734138 https://doi.org/10.1023/A:1011179321529 2023-01-20T07:31:39Z A 341 cm long sediment sequence was recovered from the unofficially named Raffles Sø on Raffles Ø, outer Scoresby Sund region, East Greenland. The sediment sequence consists in the upper part (0-230 cm) of a stratified gyttja enriched in organic carbon and biogenic silica whereas the lower core part (235-341 cm) is composed of terrigenous, consolidated glacio-limnic sediments. 14C-AMS measurements indicate that the sediment sequence represents the entire Holocene lake history from 10,030 calibrated radiocarbon years. The geochemical parameters (opal, total organic carbon (TOC), total nitrogen (TN)) and the total diatom concentration show similar developments during the Holocene, and reflect changes in biological production and nutrient input into the lake. These records clearly reveal a broad Holocene TOC-opal-maximum interval between 5200 and 1800 cal. yrs BP. The diatom flora consisted of 66 taxa representing 20 genera but only seven taxa were abundant and, sometimes, these were monospecifically dominant during the Holocene. In the sediment core from Raffles Sø four successive stratigraphical zones can be distinguished. Accumulation of diatom valves began at 9900 cal. yrs BP with a Stephanodiscus minutulus (Kütz.) Cleve and Möller dominated assemblage (stratigraphic zone 1) followed by a diatom flora dominated by Cyclotella pseudostelligera Hustedt and, less frequently, by Diatoma tenuis Agardh (9400 until 5900 cal. yrs BP, zone 2). Cyclotella sp. A, a taxon which belongs to the Cyclotella rossii-comensis-tripartita-complex, was the dominant floral element between 5200 and 1800 cal. yrs BP (zone 3). From 1800 cal. yrs BP, the periphytic taxa Fragilaria capucina var. gracilis (Østr.) Hustedt and F. capucina var. rumpens (Kütz.) Lange-Bertalot attained highest relative abundances, also almost monospecifically (zone 4). The distribution and composition of the diatom assemblages in the sediment record from Raffles Sø probably reflect past variations in the extent of the lake-ice cover during the growing season. ... Dataset Arctic East Greenland Greenland Ice permafrost Scoresby Sund PANGAEA - Data Publisher for Earth & Environmental Science Arctic Greenland Sund ENVELOPE(13.644,13.644,66.207,66.207) Scoresby ENVELOPE(162.750,162.750,-66.567,-66.567) Scoresby Sund ENVELOPE(-24.387,-24.387,70.476,70.476) ENVELOPE(-21.535000,-21.535000,70.595000,70.595000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
AWI_PerDyn AWI Arctic Land Expedition COMPCORE Composite Core GL-Land_1994 Greenland94 KOL_P Permafrost Research (Periglacial Dynamics) @ AWI PG1214 PG1214-3 PG1214-4 Piston corer Potsdam Quaternary Environment of the Eurasian North QUEEN Raffles Sø (lake) |
spellingShingle |
AWI_PerDyn AWI Arctic Land Expedition COMPCORE Composite Core GL-Land_1994 Greenland94 KOL_P Permafrost Research (Periglacial Dynamics) @ AWI PG1214 PG1214-3 PG1214-4 Piston corer Potsdam Quaternary Environment of the Eurasian North QUEEN Raffles Sø (lake) Cremer, Holger Wagner, Bernd Melles, Martin Hubberten, Hans-Wolfgang Diatom record of sediment profile PG1214, East Greenland |
topic_facet |
AWI_PerDyn AWI Arctic Land Expedition COMPCORE Composite Core GL-Land_1994 Greenland94 KOL_P Permafrost Research (Periglacial Dynamics) @ AWI PG1214 PG1214-3 PG1214-4 Piston corer Potsdam Quaternary Environment of the Eurasian North QUEEN Raffles Sø (lake) |
description |
A 341 cm long sediment sequence was recovered from the unofficially named Raffles Sø on Raffles Ø, outer Scoresby Sund region, East Greenland. The sediment sequence consists in the upper part (0-230 cm) of a stratified gyttja enriched in organic carbon and biogenic silica whereas the lower core part (235-341 cm) is composed of terrigenous, consolidated glacio-limnic sediments. 14C-AMS measurements indicate that the sediment sequence represents the entire Holocene lake history from 10,030 calibrated radiocarbon years. The geochemical parameters (opal, total organic carbon (TOC), total nitrogen (TN)) and the total diatom concentration show similar developments during the Holocene, and reflect changes in biological production and nutrient input into the lake. These records clearly reveal a broad Holocene TOC-opal-maximum interval between 5200 and 1800 cal. yrs BP. The diatom flora consisted of 66 taxa representing 20 genera but only seven taxa were abundant and, sometimes, these were monospecifically dominant during the Holocene. In the sediment core from Raffles Sø four successive stratigraphical zones can be distinguished. Accumulation of diatom valves began at 9900 cal. yrs BP with a Stephanodiscus minutulus (Kütz.) Cleve and Möller dominated assemblage (stratigraphic zone 1) followed by a diatom flora dominated by Cyclotella pseudostelligera Hustedt and, less frequently, by Diatoma tenuis Agardh (9400 until 5900 cal. yrs BP, zone 2). Cyclotella sp. A, a taxon which belongs to the Cyclotella rossii-comensis-tripartita-complex, was the dominant floral element between 5200 and 1800 cal. yrs BP (zone 3). From 1800 cal. yrs BP, the periphytic taxa Fragilaria capucina var. gracilis (Østr.) Hustedt and F. capucina var. rumpens (Kütz.) Lange-Bertalot attained highest relative abundances, also almost monospecifically (zone 4). The distribution and composition of the diatom assemblages in the sediment record from Raffles Sø probably reflect past variations in the extent of the lake-ice cover during the growing season. ... |
format |
Dataset |
author |
Cremer, Holger Wagner, Bernd Melles, Martin Hubberten, Hans-Wolfgang |
author_facet |
Cremer, Holger Wagner, Bernd Melles, Martin Hubberten, Hans-Wolfgang |
author_sort |
Cremer, Holger |
title |
Diatom record of sediment profile PG1214, East Greenland |
title_short |
Diatom record of sediment profile PG1214, East Greenland |
title_full |
Diatom record of sediment profile PG1214, East Greenland |
title_fullStr |
Diatom record of sediment profile PG1214, East Greenland |
title_full_unstemmed |
Diatom record of sediment profile PG1214, East Greenland |
title_sort |
diatom record of sediment profile pg1214, east greenland |
publisher |
PANGAEA |
publishDate |
2001 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.734138 https://doi.org/10.1594/PANGAEA.734138 |
op_coverage |
LATITUDE: 70.595000 * LONGITUDE: -21.535000 * DATE/TIME START: 1994-09-24T00:00:00 * DATE/TIME END: 1994-09-24T00:00:00 |
long_lat |
ENVELOPE(13.644,13.644,66.207,66.207) ENVELOPE(162.750,162.750,-66.567,-66.567) ENVELOPE(-24.387,-24.387,70.476,70.476) ENVELOPE(-21.535000,-21.535000,70.595000,70.595000) |
geographic |
Arctic Greenland Sund Scoresby Scoresby Sund |
geographic_facet |
Arctic Greenland Sund Scoresby Scoresby Sund |
genre |
Arctic East Greenland Greenland Ice permafrost Scoresby Sund |
genre_facet |
Arctic East Greenland Greenland Ice permafrost Scoresby Sund |
op_source |
Supplement to: Cremer, Holger; Wagner, Bernd; Melles, Martin; Hubberten, Hans-Wolfgang (2001): The postglacial environmental development of Raffles Sø, East Greenland: inferences from a 10,000 year diatom record. Journal of Paleolimnology, 26(1), 67-87, https://doi.org/10.1023/A:1011179321529 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.734138 https://doi.org/10.1594/PANGAEA.734138 |
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.734138 https://doi.org/10.1023/A:1011179321529 |
_version_ |
1766347744845234176 |