Oxygen consumption in Arctic sediments, supplement to: Hulth, Stefan; Blackburn, T H; Hall, Per (1994): Arctic sediments (Svalbard): consumption and microdistribution of oxygen. Marine Chemistry, 46(3), 293-316
Total sediment oxygen consumption rates (TSOC or Jtot), measured during sediment-water incubations, and sediment oxygen microdistributions were studied at 16 stations in the Arctic Ocean (Svalbard area). The oxygen consumption rates ranged between 1.85 and 11.2 mmol m**-2 d**-1, and oxygen penetrate...
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ftdatacite:10.1594/pangaea.776753 2023-05-15T14:58:07+02:00 Oxygen consumption in Arctic sediments, supplement to: Hulth, Stefan; Blackburn, T H; Hall, Per (1994): Arctic sediments (Svalbard): consumption and microdistribution of oxygen. Marine Chemistry, 46(3), 293-316 Hulth, Stefan Blackburn, T H Hall, Per 2012 application/zip https://dx.doi.org/10.1594/pangaea.776753 https://doi.pangaea.de/10.1594/PANGAEA.776753 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/0304-4203(94)90084-1 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Multiple investigations Giant box corer MultiCorer ARK-VIII/2 Polarstern Atlantic Data Base for Exchange Processes at the Deep Sea Floor ADEPD Supplementary Collection of Datasets Collection article 2012 ftdatacite https://doi.org/10.1594/pangaea.776753 https://doi.org/10.1016/0304-4203(94)90084-1 2022-02-08T16:24:46Z Total sediment oxygen consumption rates (TSOC or Jtot), measured during sediment-water incubations, and sediment oxygen microdistributions were studied at 16 stations in the Arctic Ocean (Svalbard area). The oxygen consumption rates ranged between 1.85 and 11.2 mmol m**-2 d**-1, and oxygen penetrated from 5.0 to >59 mm into the investigated sediments. Measured TSOC exceeded the calculated diffusive oxygen fluxes (Jdiff) by 1.1-4.8 times. Diffusive fluxes across the sediment-water interface were calculated using the whole measured microprofiles, rather than the linear oxygen gradient in the top sediment layer. The lack of a significant correlation between found abundances of bioirrigating meiofauna and high Jtot/Jdiff ratios as well as minor discrepancies in measured TSOC between replicate sediment cores, suggest molecular diffusion, not bioirrigation, to be the most important transport mechanism for oxygen across the sediment-water interface and within these sediments. The high ratios of Jtot/Jdiff obtained for some stations were therefore suggested to be caused by topographic factors, i.e. underestimation of the actual sediment surface area when one-dimensional diffusive fluxes were calculated, or sampling artifacts during core recovery from great water depths. Measured TSOC correlated to water depth raised to the -0.4 to -0.5 power (TSOC = water depth**-0.4 to -0.5) for all investigated stations, but they could be divided into two groups representing different geographical areas with different sediment oxygen consumption characteristics. The differences in TSOC between the two areas were suggested to reflect hydrographic factors (such as ice coverage and import/production of reactive particulate organic material) related to the dominating water mass (Atlantic or polar) in each of the two areas. The good correlation between TSOC and water depth**-0.4 to -0.5 rules out any of the stations investigated to be topographic depressions with pronounced enhanced sediment oxygen consumption. Article in Journal/Newspaper Arctic Arctic Ocean Svalbard DataCite Metadata Store (German National Library of Science and Technology) Arctic Arctic Ocean Blackburn ENVELOPE(-147.267,-147.267,-86.283,-86.283) Hulth ENVELOPE(-64.183,-64.183,-66.683,-66.683) Svalbard |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Multiple investigations Giant box corer MultiCorer ARK-VIII/2 Polarstern Atlantic Data Base for Exchange Processes at the Deep Sea Floor ADEPD |
spellingShingle |
Multiple investigations Giant box corer MultiCorer ARK-VIII/2 Polarstern Atlantic Data Base for Exchange Processes at the Deep Sea Floor ADEPD Hulth, Stefan Blackburn, T H Hall, Per Oxygen consumption in Arctic sediments, supplement to: Hulth, Stefan; Blackburn, T H; Hall, Per (1994): Arctic sediments (Svalbard): consumption and microdistribution of oxygen. Marine Chemistry, 46(3), 293-316 |
topic_facet |
Multiple investigations Giant box corer MultiCorer ARK-VIII/2 Polarstern Atlantic Data Base for Exchange Processes at the Deep Sea Floor ADEPD |
description |
Total sediment oxygen consumption rates (TSOC or Jtot), measured during sediment-water incubations, and sediment oxygen microdistributions were studied at 16 stations in the Arctic Ocean (Svalbard area). The oxygen consumption rates ranged between 1.85 and 11.2 mmol m**-2 d**-1, and oxygen penetrated from 5.0 to >59 mm into the investigated sediments. Measured TSOC exceeded the calculated diffusive oxygen fluxes (Jdiff) by 1.1-4.8 times. Diffusive fluxes across the sediment-water interface were calculated using the whole measured microprofiles, rather than the linear oxygen gradient in the top sediment layer. The lack of a significant correlation between found abundances of bioirrigating meiofauna and high Jtot/Jdiff ratios as well as minor discrepancies in measured TSOC between replicate sediment cores, suggest molecular diffusion, not bioirrigation, to be the most important transport mechanism for oxygen across the sediment-water interface and within these sediments. The high ratios of Jtot/Jdiff obtained for some stations were therefore suggested to be caused by topographic factors, i.e. underestimation of the actual sediment surface area when one-dimensional diffusive fluxes were calculated, or sampling artifacts during core recovery from great water depths. Measured TSOC correlated to water depth raised to the -0.4 to -0.5 power (TSOC = water depth**-0.4 to -0.5) for all investigated stations, but they could be divided into two groups representing different geographical areas with different sediment oxygen consumption characteristics. The differences in TSOC between the two areas were suggested to reflect hydrographic factors (such as ice coverage and import/production of reactive particulate organic material) related to the dominating water mass (Atlantic or polar) in each of the two areas. The good correlation between TSOC and water depth**-0.4 to -0.5 rules out any of the stations investigated to be topographic depressions with pronounced enhanced sediment oxygen consumption. |
format |
Article in Journal/Newspaper |
author |
Hulth, Stefan Blackburn, T H Hall, Per |
author_facet |
Hulth, Stefan Blackburn, T H Hall, Per |
author_sort |
Hulth, Stefan |
title |
Oxygen consumption in Arctic sediments, supplement to: Hulth, Stefan; Blackburn, T H; Hall, Per (1994): Arctic sediments (Svalbard): consumption and microdistribution of oxygen. Marine Chemistry, 46(3), 293-316 |
title_short |
Oxygen consumption in Arctic sediments, supplement to: Hulth, Stefan; Blackburn, T H; Hall, Per (1994): Arctic sediments (Svalbard): consumption and microdistribution of oxygen. Marine Chemistry, 46(3), 293-316 |
title_full |
Oxygen consumption in Arctic sediments, supplement to: Hulth, Stefan; Blackburn, T H; Hall, Per (1994): Arctic sediments (Svalbard): consumption and microdistribution of oxygen. Marine Chemistry, 46(3), 293-316 |
title_fullStr |
Oxygen consumption in Arctic sediments, supplement to: Hulth, Stefan; Blackburn, T H; Hall, Per (1994): Arctic sediments (Svalbard): consumption and microdistribution of oxygen. Marine Chemistry, 46(3), 293-316 |
title_full_unstemmed |
Oxygen consumption in Arctic sediments, supplement to: Hulth, Stefan; Blackburn, T H; Hall, Per (1994): Arctic sediments (Svalbard): consumption and microdistribution of oxygen. Marine Chemistry, 46(3), 293-316 |
title_sort |
oxygen consumption in arctic sediments, supplement to: hulth, stefan; blackburn, t h; hall, per (1994): arctic sediments (svalbard): consumption and microdistribution of oxygen. marine chemistry, 46(3), 293-316 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2012 |
url |
https://dx.doi.org/10.1594/pangaea.776753 https://doi.pangaea.de/10.1594/PANGAEA.776753 |
long_lat |
ENVELOPE(-147.267,-147.267,-86.283,-86.283) ENVELOPE(-64.183,-64.183,-66.683,-66.683) |
geographic |
Arctic Arctic Ocean Blackburn Hulth Svalbard |
geographic_facet |
Arctic Arctic Ocean Blackburn Hulth Svalbard |
genre |
Arctic Arctic Ocean Svalbard |
genre_facet |
Arctic Arctic Ocean Svalbard |
op_relation |
https://dx.doi.org/10.1016/0304-4203(94)90084-1 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.776753 https://doi.org/10.1016/0304-4203(94)90084-1 |
_version_ |
1766330213791170560 |