Water temperature, salinity, DOC content and THNS concentration in samples taken during POLARSTERN cruise to the Fram Strait and Greenland Sea
Dissolved organic matter (DOM) was isolated with XAD-2 and 4 resins from different water masses of the Greenland Sea and Fram Strait. The contribution of XAD-extractable dissolved organic carbon (DOC), operationally defined as 'recalcitrant' or humic substances, to total DOC was in the ran...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.847647 2024-09-15T17:42:17+00:00 Water temperature, salinity, DOC content and THNS concentration in samples taken during POLARSTERN cruise to the Fram Strait and Greenland Sea Engbrodt, Ralph Kattner, Gerhard MEDIAN LATITUDE: 77.597139 * MEDIAN LONGITUDE: 3.727611 * SOUTH-BOUND LATITUDE: 75.000000 * WEST-BOUND LONGITUDE: -15.003333 * NORTH-BOUND LATITUDE: 81.065000 * EAST-BOUND LONGITUDE: 17.990000 * DATE/TIME START: 1997-08-20T07:52:00 * DATE/TIME END: 1997-09-22T11:55:00 2005 application/zip, 2 datasets https://doi.pangaea.de/10.1594/PANGAEA.847647 https://doi.org/10.1594/PANGAEA.847647 en eng PANGAEA Engbrodt, Ralph (2001): Biogeochemistry of Dissolved Carbohydrates in the Arctic (Biogeochemie gelöster Kohlenhydrate in der Arktis). Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 396, 106 pp, https://doi.org/10.2312/BzPM_0396_2001 https://doi.pangaea.de/10.1594/PANGAEA.847647 https://doi.org/10.1594/PANGAEA.847647 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Engbrodt, Ralph; Kattner, Gerhard (2005): On the biogeochemistry of dissolved carbohydrates in the Greenland Sea (Arctic). Organic Geochemistry, 36(6), 937-948, https://doi.org/10.1016/j.orggeochem.2004.12.007 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 dataset publication series 2005 ftpangaea https://doi.org/10.1594/PANGAEA.84764710.1016/j.orggeochem.2004.12.00710.2312/BzPM_0396_2001 2024-08-21T00:02:25Z Dissolved organic matter (DOM) was isolated with XAD-2 and 4 resins from different water masses of the Greenland Sea and Fram Strait. The contribution of XAD-extractable dissolved organic carbon (DOC), operationally defined as 'recalcitrant' or humic substances, to total DOC was in the range of 45 ± 9% in surface waters and 60 ± 6% in deep waters. The carbohydrate concentration and composition were determined using the l-tryptophan/sulfuric acid method (for the bulk carbohydrate concentration, TCHO) and high performance anion-exchange chromatography after sulfuric acid hydrolysis (for the distribution of total hydrolysable neutral sugars, THNS). Carbohydrates contributed up to 6.8% to both total and recalcitrant DOC. TCHO contribution to total DOC decreased with depth from on average 4.1 ± 1.2% in surface waters to 2.2 ± 1.0% in deep waters, whereas the THNS contribution was similar in both layers, accounting for 2.5 ± 1.6% (surface) and 2.4 ± 0.2% (at depth). TCHO contribution to XAD-extractable DOC also decreased with depth from 4.5 ± 1.7% to 2.1 ± 1.0%, whereas THNS contribution was almost constant, with yields of 0.5 ± 0.3% for surface samples and 0.6 ± 0.1% at depth. The molecular size distribution of the recalcitrant DOM showed for all fractions a clear trend towards small molecules in the deep sea. More than half of the XAD-extractable carbohydrates of surface samples and more than 70% of deep sea samples were found in the nonpolar fraction from XAD, which was eluted with methanol. Glucose was the dominant carbohydrate in the surface water samples, whereas in the deep sea the composition was more uniform. In the XAD extracts, the compositions were less variable than in the original samples. The neutral sugar composition, in particular glucose and the deoxysugars, is indicative of the diagenetic state of the extracted DOM. The molar ratio (fucose + rhamnose)/(arabinose + xylose) was lowest for deep sea extractable DOM, indicating a high contribution of material modified by microorganisms. The THNS ... Other/Unknown Material Antarc* Antarctic Arctic Berichte zur Polar- und Meeresforschung Fram Strait Greenland Greenland Sea Reports on Polar and Marine Research Sea ice PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-15.003333,17.990000,81.065000,75.000000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
spellingShingle |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 Engbrodt, Ralph Kattner, Gerhard Water temperature, salinity, DOC content and THNS concentration in samples taken during POLARSTERN cruise to the Fram Strait and Greenland Sea |
topic_facet |
Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas SPP1158 |
description |
Dissolved organic matter (DOM) was isolated with XAD-2 and 4 resins from different water masses of the Greenland Sea and Fram Strait. The contribution of XAD-extractable dissolved organic carbon (DOC), operationally defined as 'recalcitrant' or humic substances, to total DOC was in the range of 45 ± 9% in surface waters and 60 ± 6% in deep waters. The carbohydrate concentration and composition were determined using the l-tryptophan/sulfuric acid method (for the bulk carbohydrate concentration, TCHO) and high performance anion-exchange chromatography after sulfuric acid hydrolysis (for the distribution of total hydrolysable neutral sugars, THNS). Carbohydrates contributed up to 6.8% to both total and recalcitrant DOC. TCHO contribution to total DOC decreased with depth from on average 4.1 ± 1.2% in surface waters to 2.2 ± 1.0% in deep waters, whereas the THNS contribution was similar in both layers, accounting for 2.5 ± 1.6% (surface) and 2.4 ± 0.2% (at depth). TCHO contribution to XAD-extractable DOC also decreased with depth from 4.5 ± 1.7% to 2.1 ± 1.0%, whereas THNS contribution was almost constant, with yields of 0.5 ± 0.3% for surface samples and 0.6 ± 0.1% at depth. The molecular size distribution of the recalcitrant DOM showed for all fractions a clear trend towards small molecules in the deep sea. More than half of the XAD-extractable carbohydrates of surface samples and more than 70% of deep sea samples were found in the nonpolar fraction from XAD, which was eluted with methanol. Glucose was the dominant carbohydrate in the surface water samples, whereas in the deep sea the composition was more uniform. In the XAD extracts, the compositions were less variable than in the original samples. The neutral sugar composition, in particular glucose and the deoxysugars, is indicative of the diagenetic state of the extracted DOM. The molar ratio (fucose + rhamnose)/(arabinose + xylose) was lowest for deep sea extractable DOM, indicating a high contribution of material modified by microorganisms. The THNS ... |
format |
Other/Unknown Material |
author |
Engbrodt, Ralph Kattner, Gerhard |
author_facet |
Engbrodt, Ralph Kattner, Gerhard |
author_sort |
Engbrodt, Ralph |
title |
Water temperature, salinity, DOC content and THNS concentration in samples taken during POLARSTERN cruise to the Fram Strait and Greenland Sea |
title_short |
Water temperature, salinity, DOC content and THNS concentration in samples taken during POLARSTERN cruise to the Fram Strait and Greenland Sea |
title_full |
Water temperature, salinity, DOC content and THNS concentration in samples taken during POLARSTERN cruise to the Fram Strait and Greenland Sea |
title_fullStr |
Water temperature, salinity, DOC content and THNS concentration in samples taken during POLARSTERN cruise to the Fram Strait and Greenland Sea |
title_full_unstemmed |
Water temperature, salinity, DOC content and THNS concentration in samples taken during POLARSTERN cruise to the Fram Strait and Greenland Sea |
title_sort |
water temperature, salinity, doc content and thns concentration in samples taken during polarstern cruise to the fram strait and greenland sea |
publisher |
PANGAEA |
publishDate |
2005 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.847647 https://doi.org/10.1594/PANGAEA.847647 |
op_coverage |
MEDIAN LATITUDE: 77.597139 * MEDIAN LONGITUDE: 3.727611 * SOUTH-BOUND LATITUDE: 75.000000 * WEST-BOUND LONGITUDE: -15.003333 * NORTH-BOUND LATITUDE: 81.065000 * EAST-BOUND LONGITUDE: 17.990000 * DATE/TIME START: 1997-08-20T07:52:00 * DATE/TIME END: 1997-09-22T11:55:00 |
long_lat |
ENVELOPE(-15.003333,17.990000,81.065000,75.000000) |
genre |
Antarc* Antarctic Arctic Berichte zur Polar- und Meeresforschung Fram Strait Greenland Greenland Sea Reports on Polar and Marine Research Sea ice |
genre_facet |
Antarc* Antarctic Arctic Berichte zur Polar- und Meeresforschung Fram Strait Greenland Greenland Sea Reports on Polar and Marine Research Sea ice |
op_source |
Supplement to: Engbrodt, Ralph; Kattner, Gerhard (2005): On the biogeochemistry of dissolved carbohydrates in the Greenland Sea (Arctic). Organic Geochemistry, 36(6), 937-948, https://doi.org/10.1016/j.orggeochem.2004.12.007 |
op_relation |
Engbrodt, Ralph (2001): Biogeochemistry of Dissolved Carbohydrates in the Arctic (Biogeochemie gelöster Kohlenhydrate in der Arktis). Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research, 396, 106 pp, https://doi.org/10.2312/BzPM_0396_2001 https://doi.pangaea.de/10.1594/PANGAEA.847647 https://doi.org/10.1594/PANGAEA.847647 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.84764710.1016/j.orggeochem.2004.12.00710.2312/BzPM_0396_2001 |
_version_ |
1810488802889695232 |